US3769774A - Steel deck insert - Google Patents

Steel deck insert Download PDF

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US3769774A
US3769774A US00266387A US3769774DA US3769774A US 3769774 A US3769774 A US 3769774A US 00266387 A US00266387 A US 00266387A US 3769774D A US3769774D A US 3769774DA US 3769774 A US3769774 A US 3769774A
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Prior art keywords
spring
bolt
washer
diameter
nut
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US00266387A
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W Barnes
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Phillips Drill Co Inc
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Individual
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Assigned to ITT CORPORATION reassignment ITT CORPORATION CHANGE OF NAME (SEE DOCUMENT FOR DETAILS). Assignors: INTERNATIONAL TELEPHONE AND TELEGRAPH CORPORATION
Assigned to FL INDUSTRIES, INC., A CORP. OF N.J. reassignment FL INDUSTRIES, INC., A CORP. OF N.J. ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: ITT CORPORATION, 320 PARK AVENUE, NEW YORK, NY 10022, A CORP. OF DE.
Assigned to PHILLIPS DRILL COMPANY, INC., A CORP. OF IN reassignment PHILLIPS DRILL COMPANY, INC., A CORP. OF IN ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: FL INDUSTRIES, INC.
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L3/00—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets
    • F16L3/14—Hangers in the form of bands or chains
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/38—Connections for building structures in general
    • E04B1/41—Connecting devices specially adapted for embedding in concrete or masonry
    • E04B1/4157—Longitudinally-externally threaded elements extending from the concrete or masonry, e.g. anchoring bolt with embedded head
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B9/00—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation
    • E04B9/18—Means for suspending the supporting construction
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S411/00—Expanded, threaded, driven, headed, tool-deformed, or locked-threaded fastener
    • Y10S411/955—Locked bolthead or nut
    • Y10S411/965—Locked bolthead or nut with retainer
    • Y10S411/97—Resilient retainer

Definitions

  • ABSTRACT An elongate bolt having a head at its upper end and a threaded lower end is mounted through a corrugated sheet steel member of a steel floor deck.
  • the threaded lower end comprises a stud formation which carries an elongate nut which provides a downwardly opening interior threaded socket.
  • the bolt is mounted in a hole drilled in the horizontal portion of the corrugated sheet steel member and is held in place by the resilient splayed fingers of a ring engaging the bolt below the sheet of steel and a helical spring backed against a shoulder of the bolt and engaging the upper surface of the corrugated sheet of steel through a large washer.
  • the invention herein is concerned with apparatus which is intended to be installed in the deck of a building during the construction thereof to provide depending hangers below the deck.
  • apparatus which is intended to be installed in the deck of a building during the construction thereof to provide depending hangers below the deck.
  • hanger inserts of the invention one may support pipes and conduits, automatic sprinkler apparatus, electrical fixtures, and any other apparatus which would normally be depending from a ceiling as well as supports for false ceilings and the like.
  • Deck construction or decking is a type of construction which is extensively used for forming the floors of large steel frame buildings of multiple stories.
  • the floor of one level is defined on the upper surface of a given deck while the true ceiling of the lower level is defined by the lower surface of the same deck.
  • Fluted or corrugated sheet steel is utilized as a floor base and filled with a substantial layer of concrete poured in situ.
  • Utility service conduits are laid in suitable formations of the sheet steel member prior to pouring concrete upon the upper surface of the member. There may be outlets for these conduits on the upper surfaces of the concrete layer which are prelocated in the concrete or otherwise identified to be used at a later time. The bottom of this layer of concrete is in intimate contact with the steel base whose underside is exposed below as the true ceiling for the lowerlevel. The resulting deck structure is strong and substantially fireproof.
  • the invention contemplates a type of hanger insert which obviates some problems arising in any attempt to provide hanger inserts for preinstallation.
  • the insert must be simple and strong so that it can be installed effectively and easily. Also, it must be economical and result in a strong installation below the deck after the concrete has set.
  • the insert must not readily be pulled out or permanently bent over prior to the pouring of the concrete. This is important because until the concrete has been fully poured, workmen may step on the inserts,
  • One hanger insert available commercially has a construction substantially as described butis not economical to manufacture.
  • the upper helical spring is prevented from riding up the bolt by lateral stop members thatmust be formed by an operation in addition to the manufacturing process of making the bolt.
  • There is a nut structure at the bottom of the bolt that comprises a cylindrical metal bushing having a threaded interior molded into a plastic bushing the upper end of which extends beyond the metal bushing and is segmented axially to provide a plurality of circumferentially spaced fingers which diverge upwardly.
  • the resilience of the fingers enables them to contract as the nut structure is pushed downwardly through a hole in the metal decking with the bolt bottom and then spread after passing through.
  • the fingers engage the bottom surface of the metal decking and are yieldably held in position by the compressed resilience of the upper helical spring.
  • the nut structure described is expensive to manufacture because it has to be made out of plastic moulded around the threaded metal bushing and then segmented.
  • the invention provides simple stop means for the upper spring formed during the manufacture of the bolt itself. It also contemplates two parts in place of the above described nut structure, both of which are simple to manufacture and hence more economical while also being more effective in operation.
  • One part is a ring of resilient metal having integral fingers formed by simple production techniques and the other part is a simple cylindrical nut readily formed on a screw machine.
  • the head of the prior hanger insert is axially symmetrical and hence likely to be twisted loose out of the set concrete as the bolt is subjected to torque during attachment of a structural member to the bottom thereof.
  • the invention provides an offset head to prevent this.
  • the head may also be non-circular for the same purpose.
  • Another feature of the invention is the use of a conical or frusto-conical spring giving a broader base and providing a higher degree of stability to aid the bolt in recovering to vertical position after having been rocked laterally.
  • the hanger insert of the invention comprises an elon- I gate structure including a belt which is yieldably mounted above a corrugated sheet steel member with its bottom end protruding through a hole in the sheet member and having means for securing structural members depending from the bolt below the corrugated sheet steel member. After installation theupper structure is embedded in concrete poured on the upper surface of the steel member.
  • the hanger insert comprises a boltlike member having an elongate cylindrical body, an offset and/or noncircular head at its upper end and a threaded lower end.
  • An annular shoulder is formed in the body between its ends by having the lower portion of the body of reduced diameter.
  • a conical helical spring has its smaller diameter engaged against the shoulder and its lower diameter engaged against a washer under compression.
  • a metal ring having splayed resilient fingers has the fingers engaged against the bottom of the washer and held in place by a cylindrical nut threaded to the bottom end of the boltlike member.
  • the insert is installedv by pushing the nut and ring through the hole from the top of the sheet steel member, compressing the helical spring until the contracted fingers slip through the hole and snap outwardly below the bottom of the sheet steel member.
  • the washer remains on top and the insert is yieldably mounted, clamped in place onto the sheet steel member between the washer and the fingers.
  • the nut provides means for securement of structural members after the upper part of the insert has been embedded in concrete.
  • FIG. 1 is an exploded view of a steel deck insert according to the invention including a portion of a steel floor deck plate, a false ceiling member and a ceiling support bolt;
  • FIG. 2 is a front elevational view of the assembled steel deck insert constructed according to the invention.
  • FIG. 3 is a side elevational view, partly in section illustrating the steel deck insert installed in the steel floor deck;
  • FIG. 4 is a fragmentary sectional view taken through a portion of a corrugated steel floor deck illustrating two hanger inserts installed therein.
  • the steel deck or hanger insert of the invention is designed to be installed in decking of the type which involves poured concrete prior to the pouring of the concrete so that the setting of the concrete will permanently anchor the insert in the deck.
  • FIG. 4 there is illustrated a portion of a steel floor deck comprising a sheet steel member having a layer of concrete 1] of substantial thickness above the same and in intimate contact therewith.
  • FIGS. 1 to 3 The details of the hanger insert of the invention are shown in FIGS. 1 to 3 wherein the hanger insert is designated generally by the reference character 12 and is shown partially above and partially below the sheet steel member 10.
  • the insert comprises an elongate boltlike member 13 having an upper cylindrical body portion 14 and a lower cylindrical body portion 16.
  • the upper cylindrical body portion 14 is of a diameter slightly greater than the diameter (if the lower body portion 16.
  • the lower part 18 of theIlower body portion '16 is threaded so that a cylindrical nut 20 may be fastened to the lower body portion 16.
  • the upper end of the upper portion 14 has a relatively large head 22 integral therewith.
  • the head 22 is preferably offset relative, to the bolt 13 for reasons which will be set forth hereinafter. It may also be noncircular.
  • the insert further comprises a helical spring 24 of frusto-conical configuration the smaller in the drawing upper diameter thereof being somewhatlarger than the diameter of the lower body portion 16 but smaller than the diameter of the upper body portion 14.
  • the spring 24 is capable of readily sliding over the lower portion 16 but in moving upwardly is stopped by the shoulder 26 which is the beginning of the larger diameter section. This shoulder is easily and economically formed during the machining of the bolt member 13 to serve as stop means for spring 24.
  • the insert is also provided with a washer 28 having a central circular opening of a diameter enabling the washer to slide over the lower portion 16 of the bolt member 13.
  • the larger in the drawing lower diameter of the helical spring 24 is smaller than the diameter of the washer 28 but provides a stable base for the spring to bias the bolt upright at all times.
  • a sleevelike member 30 is provided to secure the bolt member to the sheet steel member 10.
  • the member 30 is best illustrated in FIG. 1 and is formed from thin resilient sheet metal. It has a bottom ring portion 32 with a plurality of circumferentially spaced flared fingers 34 integral therewith.
  • the insert is further provided with the bushing or cylindrical steel nut 20 which may be somewhat elongate.
  • the upper part of the nut 20 is intended to be connected to the threaded end 18 of the bolt 13.
  • the lower part of the nut 20 serves as a socket for threading therein a bolt 38 or other structural member.
  • the particular bolt 38 has a threaded upper end 40 and a head 42.
  • the bolt 38 with its head 42 may be employed to carry a sheet member forming part of a false ceiling 44 or any other structural member.
  • the hanger insert may be assembled by the manufacturer in the condition shown in FIG. 4 with all parts as shown, the spring 24 being somewhat compressed against the upper surface of the washer 28.
  • the insert is now resiliently clamped in position, the flared fingers 34 engaging the sheet metal member 10 from below and the washer under the force of the spring 24 engaging same from above.
  • the pressure applied by the spring 24 is readily adjusted by taking up or releasing the structural member 20.
  • the bolt 13 resists force tending to rock same laterally.
  • the head 22 of the bolt member'l3 is offset. Expressed otherwise, the center of the head 22 is not aligned with the axis of the bolt member 13. It may alternately or additionally be non-circular. The purpose of the offsetting and/or non-circular features is to impede the likelihood of rotational motion of the head 22 within the hardened concrete 11 when torque is applied to the bottom of the bolt member 13.
  • FIG. 4 illustrates the corrugated steel sheet member 10 with two steel inserts installed so as to be embedded in the concrete.
  • the bolt .40 is fastened to the first insert.
  • the head 42 of the bolt 40 is shown engaged below a hole in the sheet member of a false ceiling 44.
  • a pipe hanger or other fixture may be secured as shown at 50 to the second hanger insert.
  • the sleeve member 30 and the nut 20 replace the combined plastic and metal structure described as prior art.
  • the economy of these components is obvious since the sleeve member 30 may be formed of resilient sheet metal by stamping, forming, drawing and the like while the nut 20 is the most elemental type of screw machine product. Further, the sheet metal fingers 34 are stronger and more resilient than plastic.
  • the bottom end of the nut 20 may be externally threaded to provide a stud attachment, if desired.
  • a hanger insert for installation in steel decking and which includes an elongate bolt having a body with a head at its upper end and its bottom end being threaded, a helical spring coaxial with the body, upper stop means on the body engaging the upper end of the spring, nut and finger means engaging the bottom end of the bolt, and including upwardly diverging fingers, and a washer between the bottom of the spring and the upper ends of the fingers with the lower end of the spring engaged against the top of the washer, the insert adapted to be pushed through a hole in the steel decking nut and finger means first so that the fingers contract while passing through the hole and spring back after passing to engage against the bottom of the steel decking, the spring being under some compression against the top of the washer to bias the insert in erect position;
  • said stop means comprising an annular shoulder on said body of a diameter larger than the diameter of the helical spring at its upper end.
  • said nut and finger means comprise a sleevelike member of resilient sheet metal having a lower ring and integral splayed fingers connected to the ring and spaced circumferentially and a nut independent of said sleevelike member engaging said threaded bottom end and backhead is offset.
  • a hanger insert for installation in steel decking and which includes an elongate bolt having a body with a head at its upper end and its bottom end being threaded, a helical spring coaxial with the body, upper stop means on the body engaging the upper end of the spring, nut and finger means engaging the bottom end of the bolt, and including upwardly diverging fingers, and a washer between the bottom of the spring and the upper ends of the fingers with the lower end of the spring engaged against the top of the washer, the insert adapted to be pushed through a hole in the steel decking nut and finger means first so that the fingers contract while passing through the hole and spring back after passing to engage against the bottom of the steel decking, the spring being under some compression against the top of the washer to bias the insert in erect position;
  • said nut and finger means comprising a sleevelike member of resilient sheet metal having a lower ring and integral splayed fingers connected to the ring and spaced circumferentially and a nut independent of said

Abstract

An elongate bolt having a head at its upper end and a threaded lower end is mounted through a corrugated sheet steel member of a steel floor deck. The threaded lower end comprises a stud formation which carries an elongate nut which provides a downwardly opening interior threaded socket. The bolt is mounted in a hole drilled in the horizontal portion of the corrugated sheet steel member and is held in place by the resilient splayed fingers of a ring engaging the bolt below the sheet of steel and a helical spring backed against a shoulder of the bolt and engaging the upper surface of the corrugated sheet of steel through a large washer. When concrete is poured on the upper surface of the sheet steel member and set, it will embed the upper portion of the bolt. Prior to pouring, however, the upper portion of the bolt is yieldable by reason of the helical spring but recoverable to a position perpendicular to the plane of the sheet steel member.

Description

United States Patent 1 Barnes STEEL DECK INSERT [75] Inventor: William R. Barnes, Highland, 1nd.
[73] Assignee: International Telephone and Telegraph Corporation, New York, N.Y.
221 Filed: June 26,1972
21 Appl. No.: 266,387
[52] US. Cl. 52/698, 52/39, 85/1 H,
85/50 R, l51/41.75, 248/58 [51] Int. Cl E04b 1/41 [58] Field of Search 52/698, 699, 700,
52/703, 705, 335, 27, 39 334-336; 248/56, 317,17, 58; 287/2092 C; 85/1 H, 80, 75, 70, 71, 50 R; 151/44.75
[4 Nov. 6, 1973 Primary Examiner-Frank L. Abbott Assistant ExaminerCarl D. Friedman Attorney-C. Cornell Remsen, Jr. et a1.
[5 7] ABSTRACT An elongate bolt having a head at its upper end and a threaded lower end is mounted through a corrugated sheet steel member of a steel floor deck. The threaded lower end comprises a stud formation which carries an elongate nut which provides a downwardly opening interior threaded socket. The bolt is mounted in a hole drilled in the horizontal portion of the corrugated sheet steel member and is held in place by the resilient splayed fingers of a ring engaging the bolt below the sheet of steel and a helical spring backed against a shoulder of the bolt and engaging the upper surface of the corrugated sheet of steel through a large washer.
When concrete is poured on the upper surface of the sheet steel member and set, it will embed the upper portion of the bolt. Prior to pouring, however, the upper portion of the bolt is yieldable by reason of the helical spring but recoverable to a position perpendicular to the plane of the sheet steel] member.
11 Claims, 4 Drawing Figures Patented Nov; 6, 1973 2 Shoe ts-Sheat l Patented Nov. 6, 1973 2 Sheets-Shoe t I! STEEL DECK INSERT -A-related-application was filed inthe name of l-Iiros hi 5 Imai on June 18- 19.71, Ser'. No. 154,324; andwas 'assigned to thesame assignee as the present application.
-' BACKGROUND OF THE INVENTION The invention herein is concerned with apparatus which is intended to be installed in the deck of a building during the construction thereof to provide depending hangers below the deck. For. example, through the use of the hanger inserts of the invention, one may support pipes and conduits, automatic sprinkler apparatus, electrical fixtures, and any other apparatus which would normally be depending from a ceiling as well as supports for false ceilings and the like.
Deck construction or decking is a type of construction which is extensively used for forming the floors of large steel frame buildings of multiple stories. The floor of one level is defined on the upper surface of a given deck while the true ceiling of the lower level is defined by the lower surface of the same deck.
Although there are several types of deck construction in use today in the construction of large buildings, one of the most important of these is the steel floor deck due to its'presently increased use in large steel frame buildings of multiple stories.
Fluted or corrugated sheet steel is utilized as a floor base and filled with a substantial layer of concrete poured in situ. Utility service conduits are laid in suitable formations of the sheet steel member prior to pouring concrete upon the upper surface of the member. There may be outlets for these conduits on the upper surfaces of the concrete layer which are prelocated in the concrete or otherwise identified to be used at a later time. The bottom of this layer of concrete is in intimate contact with the steel base whose underside is exposed below as the true ceiling for the lowerlevel. The resulting deck structure is strong and substantially fireproof. g
In the planning of a building, structures to be supported from the bottom of the deck are best located and'inserts installed in the sheet steel prior to pouring the concrete. The only alternative is to attempt to effect the installation from below after the concrete has set. This is a difficult .and expensive technique. One must first cut or drill through the layer of steel andthen use some form of concrete anchor.
The invention contemplates a type of hanger insert which obviates some problems arising in any attempt to provide hanger inserts for preinstallation.
First, the insert must be simple and strong so that it can be installed effectively and easily. Also, it must be economical and result in a strong installation below the deck after the concrete has set.
Secondly, the insert must not readily be pulled out or permanently bent over prior to the pouring of the concrete. This is important because until the concrete has been fully poured, workmen may step on the inserts,
accidentally kick them, or structures to be preset into I the concrete may be moved against the inserts. The latter structures might be utility conduits or reinforcing rods.
Certain problems in connection with such hanger inserts are solved by theinvention as will be seen.
One hanger insert available commercially has a construction substantially as described butis not economical to manufacture. The upper helical spring is prevented from riding up the bolt by lateral stop members thatmust be formed by an operation in addition to the manufacturing process of making the bolt. There is a nut structure at the bottom of the bolt that comprises a cylindrical metal bushing having a threaded interior molded into a plastic bushing the upper end of which extends beyond the metal bushing and is segmented axially to provide a plurality of circumferentially spaced fingers which diverge upwardly. The resilience of the fingers enables them to contract as the nut structure is pushed downwardly through a hole in the metal decking with the bolt bottom and then spread after passing through. The fingers engage the bottom surface of the metal decking and are yieldably held in position by the compressed resilience of the upper helical spring.
The nut structure described is expensive to manufacture because it has to be made out of plastic moulded around the threaded metal bushing and then segmented.
The invention provides simple stop means for the upper spring formed during the manufacture of the bolt itself. It also contemplates two parts in place of the above described nut structure, both of which are simple to manufacture and hence more economical while also being more effective in operation. One part is a ring of resilient metal having integral fingers formed by simple production techniques and the other part is a simple cylindrical nut readily formed on a screw machine.
The head of the prior hanger insert is axially symmetrical and hence likely to be twisted loose out of the set concrete as the bolt is subjected to torque during attachment of a structural member to the bottom thereof. The invention provides an offset head to prevent this. In addition the head may also be non-circular for the same purpose.
Another feature of the invention is the use of a conical or frusto-conical spring giving a broader base and providing a higher degree of stability to aid the bolt in recovering to vertical position after having been rocked laterally.
SUMMARY OF THE INVENTION The hanger insert of the invention comprises an elon- I gate structure including a belt which is yieldably mounted above a corrugated sheet steel member with its bottom end protruding through a hole in the sheet member and having means for securing structural members depending from the bolt below the corrugated sheet steel member. After installation theupper structure is embedded in concrete poured on the upper surface of the steel member.
The hanger insert comprises a boltlike member having an elongate cylindrical body, an offset and/or noncircular head at its upper end and a threaded lower end. An annular shoulder is formed in the body between its ends by having the lower portion of the body of reduced diameter. A conical helical spring has its smaller diameter engaged against the shoulder and its lower diameter engaged against a washer under compression. A metal ring having splayed resilient fingers has the fingers engaged against the bottom of the washer and held in place by a cylindrical nut threaded to the bottom end of the boltlike member.
The insert is installedv by pushing the nut and ring through the hole from the top of the sheet steel member, compressing the helical spring until the contracted fingers slip through the hole and snap outwardly below the bottom of the sheet steel member. The washer remains on top and the insert is yieldably mounted, clamped in place onto the sheet steel member between the washer and the fingers.
The nut provides means for securement of structural members after the upper part of the insert has been embedded in concrete.
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an exploded view of a steel deck insert according to the invention including a portion of a steel floor deck plate, a false ceiling member and a ceiling support bolt;
FIG. 2 is a front elevational view of the assembled steel deck insert constructed according to the invention;
FIG. 3 is a side elevational view, partly in section illustrating the steel deck insert installed in the steel floor deck;
FIG. 4 is a fragmentary sectional view taken through a portion of a corrugated steel floor deck illustrating two hanger inserts installed therein.
DESCRIPTION OF THE PREFERRED EMBODIMENTS As previously explained, the steel deck or hanger insert of the invention is designed to be installed in decking of the type which involves poured concrete prior to the pouring of the concrete so that the setting of the concrete will permanently anchor the insert in the deck.
Considering for a moment FIG. 4, there is illustrated a portion of a steel floor deck comprising a sheet steel member having a layer of concrete 1] of substantial thickness above the same and in intimate contact therewith.
The details of the hanger insert of the invention are shown in FIGS. 1 to 3 wherein the hanger insert is designated generally by the reference character 12 and is shown partially above and partially below the sheet steel member 10.
The insert comprises an elongate boltlike member 13 having an upper cylindrical body portion 14 and a lower cylindrical body portion 16. The upper cylindrical body portion 14 is of a diameter slightly greater than the diameter (if the lower body portion 16. The lower part 18 of theIlower body portion '16 is threaded so that a cylindrical nut 20 may be fastened to the lower body portion 16.
The upper end of the upper portion 14 has a relatively large head 22 integral therewith. The head 22 is preferably offset relative, to the bolt 13 for reasons which will be set forth hereinafter. It may also be noncircular.
The insert further comprises a helical spring 24 of frusto-conical configuration the smaller in the drawing upper diameter thereof being somewhatlarger than the diameter of the lower body portion 16 but smaller than the diameter of the upper body portion 14. Thus, the spring 24 is capable of readily sliding over the lower portion 16 but in moving upwardly is stopped by the shoulder 26 which is the beginning of the larger diameter section. This shoulder is easily and economically formed during the machining of the bolt member 13 to serve as stop means for spring 24.
The insert is also provided with a washer 28 having a central circular opening of a diameter enabling the washer to slide over the lower portion 16 of the bolt member 13. The larger in the drawing lower diameter of the helical spring 24 is smaller than the diameter of the washer 28 but provides a stable base for the spring to bias the bolt upright at all times.
A sleevelike member 30 is provided to secure the bolt member to the sheet steel member 10. The member 30 is best illustrated in FIG. 1 and is formed from thin resilient sheet metal. It has a bottom ring portion 32 with a plurality of circumferentially spaced flared fingers 34 integral therewith.
The insert is further provided with the bushing or cylindrical steel nut 20 which may be somewhat elongate. The upper part of the nut 20 is intended to be connected to the threaded end 18 of the bolt 13. The lower part of the nut 20 serves as a socket for threading therein a bolt 38 or other structural member. The particular bolt 38 has a threaded upper end 40 and a head 42. The bolt 38 with its head 42, as indicated in FIGS. 1 and 4, may be employed to carry a sheet member forming part of a false ceiling 44 or any other structural member.
The hanger insert may be assembled by the manufacturer in the condition shown in FIG. 4 with all parts as shown, the spring 24 being somewhat compressed against the upper surface of the washer 28.
In installing the insert, first a hole is drilled'in the sheet steel member 10 as shown at 46, this hole being of a diameter slightly larger than the diameter of the ring 32 of the sleeve member 30. Subsequently the assembly is pushed through the hole 46 from the top of the sheet metal 10. In pushing the insert through the hole the spring 24 is first compressed and the fingers 34 must be constricted. They spring outwardly when the upper ends have passed downwardly through the hole 46.
As seen in FIG. 3 the insert is now resiliently clamped in position, the flared fingers 34 engaging the sheet metal member 10 from below and the washer under the force of the spring 24 engaging same from above. The pressure applied by the spring 24 is readily adjusted by taking up or releasing the structural member 20. The bolt 13 resists force tending to rock same laterally.
After the insert has been assembled as shown in FIG. 3 it is capable of being rocked or otherwise moved to a certain extent by workmen kicking or stepping one the same, and it will recover to its vertical position perpendicular to the plane of the sheet steel member 10. When the concrete is poured around the same, it will become permanently embedded as indicated in FIG. 4.
The head 22 of the bolt member'l3 is offset. Expressed otherwise, the center of the head 22 is not aligned with the axis of the bolt member 13. It may alternately or additionally be non-circular. The purpose of the offsetting and/or non-circular features is to impede the likelihood of rotational motion of the head 22 within the hardened concrete 11 when torque is applied to the bottom of the bolt member 13.
FIG. 4 illustrates the corrugated steel sheet member 10 with two steel inserts installed so as to be embedded in the concrete. The bolt .40 is fastened to the first insert. The head 42 of the bolt 40 is shown engaged below a hole in the sheet member of a false ceiling 44.
A pipe hanger or other fixture may be secured as shown at 50 to the second hanger insert.
As noted the sleeve member 30 and the nut 20 replace the combined plastic and metal structure described as prior art. The economy of these components is obvious since the sleeve member 30 may be formed of resilient sheet metal by stamping, forming, drawing and the like while the nut 20 is the most elemental type of screw machine product. Further, the sheet metal fingers 34 are stronger and more resilient than plastic. The bottom end of the nut 20 may be externally threaded to provide a stud attachment, if desired.
Modification of the invention may be made without departing from the spirit or scope of the same as defined in the appended claims.
What is desired to secure by Letters Patent of the United States is:
1. In a hanger insert for installation in steel decking and which includes an elongate bolt having a body with a head at its upper end and its bottom end being threaded, a helical spring coaxial with the body, upper stop means on the body engaging the upper end of the spring, nut and finger means engaging the bottom end of the bolt, and including upwardly diverging fingers, and a washer between the bottom of the spring and the upper ends of the fingers with the lower end of the spring engaged against the top of the washer, the insert adapted to be pushed through a hole in the steel decking nut and finger means first so that the fingers contract while passing through the hole and spring back after passing to engage against the bottom of the steel decking, the spring being under some compression against the top of the washer to bias the insert in erect position; the invention herein which comprises: said stop means comprising an annular shoulder on said body of a diameter larger than the diameter of the helical spring at its upper end.
2. The invention as claimed in claim 1 in which the spring is conical and its lower end has a diameter substantially larger than the diameter of said upper end, but smaller than the diameter of said washer.
3. The invention as claimed in claim 1 in which said nut and finger means comprise a sleevelike member of resilient sheet metal having a lower ring and integral splayed fingers connected to the ring and spaced circumferentially and a nut independent of said sleevelike member engaging said threaded bottom end and backhead is offset.
ing up said ring and providing means to enable a structural member to be connected to said bolt bottom end.
4. The invention as claimed in claim 1 in which the head is offset.
5. The invention as claimed in claim 1 in which the head is non-circular.
6. The invention as claimed in claim 5 in which the head is offset.
7. In a hanger insert for installation in steel decking and which includes an elongate bolt having a body with a head at its upper end and its bottom end being threaded, a helical spring coaxial with the body, upper stop means on the body engaging the upper end of the spring, nut and finger means engaging the bottom end of the bolt, and including upwardly diverging fingers, and a washer between the bottom of the spring and the upper ends of the fingers with the lower end of the spring engaged against the top of the washer, the insert adapted to be pushed through a hole in the steel decking nut and finger means first so that the fingers contract while passing through the hole and spring back after passing to engage against the bottom of the steel decking, the spring being under some compression against the top of the washer to bias the insert in erect position; the invention herein which comprises: said nut and finger means comprising a sleevelike member of resilient sheet metal having a lower ring and integral splayed fingers connected to the ring and spaced circumferentially and a nut independent of said sleevelike member engaging said threaded bottom end and backing up said ring and providing means to enable a structural member to be connected to said bolt bottom end.
8. The invention as claimed in claim 7 in which the helical spring is conical, the upper end being of smaller diameter and engaging said stop means, the lower diameter being of substantially larger diameter than the upper end and engaging the top of the washer, the washer being of larger diameter than the diameter of said lower end of said spring.
9. The invention as claimed in claim 7 in which the 10. The invention as claimed in claim 7 in which the head is non-circular.
11. The invention as claimed in claim 10 in which the head is offset.

Claims (11)

1. In a hanger insert for installation in steel decking and which includes an elongate bolt having a body with a head at its upper end and its bottom end being threaded, a helical spring coaxial with the body, upper stop means on the body engaging the upper end of the spring, nut and finger means engaging the bottom end of the bolt, and includinG upwardly diverging fingers, and a washer between the bottom of the spring and the upper ends of the fingers with the lower end of the spring engaged against the top of the washer, the insert adapted to be pushed through a hole in the steel decking nut and finger means first so that the fingers contract while passing through the hole and spring back after passing to engage against the bottom of the steel decking, the spring being under some compression against the top of the washer to bias the insert in erect position; the invention herein which comprises: said stop means comprising an annular shoulder on said body of a diameter larger than the diameter of the helical spring at its upper end.
2. The invention as claimed in claim 1 in which the spring is conical and its lower end has a diameter substantially larger than the diameter of said upper end, but smaller than the diameter of said washer.
3. The invention as claimed in claim 1 in which said nut and finger means comprise a sleevelike member of resilient sheet metal having a lower ring and integral splayed fingers connected to the ring and spaced circumferentially and a nut independent of said sleevelike member engaging said threaded bottom end and backing up said ring and providing means to enable a structural member to be connected to said bolt bottom end.
4. The invention as claimed in claim 1 in which the head is offset.
5. The invention as claimed in claim 1 in which the head is non-circular.
6. The invention as claimed in claim 5 in which the head is offset.
7. In a hanger insert for installation in steel decking and which includes an elongate bolt having a body with a head at its upper end and its bottom end being threaded, a helical spring coaxial with the body, upper stop means on the body engaging the upper end of the spring, nut and finger means engaging the bottom end of the bolt, and including upwardly diverging fingers, and a washer between the bottom of the spring and the upper ends of the fingers with the lower end of the spring engaged against the top of the washer, the insert adapted to be pushed through a hole in the steel decking nut and finger means first so that the fingers contract while passing through the hole and spring back after passing to engage against the bottom of the steel decking, the spring being under some compression against the top of the washer to bias the insert in erect position; the invention herein which comprises: said nut and finger means comprising a sleevelike member of resilient sheet metal having a lower ring and integral splayed fingers connected to the ring and spaced circumferentially and a nut independent of said sleevelike member engaging said threaded bottom end and backing up said ring and providing means to enable a structural member to be connected to said bolt bottom end.
8. The invention as claimed in claim 7 in which the helical spring is conical, the upper end being of smaller diameter and engaging said stop means, the lower diameter being of substantially larger diameter than the upper end and engaging the top of the washer, the washer being of larger diameter than the diameter of said lower end of said spring.
9. The invention as claimed in claim 7 in which the head is offset.
10. The invention as claimed in claim 7 in which the head is non-circular.
11. The invention as claimed in claim 10 in which the head is offset.
US00266387A 1972-06-26 1972-06-26 Steel deck insert Expired - Lifetime US3769774A (en)

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Cited By (43)

* Cited by examiner, † Cited by third party
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US3896599A (en) * 1971-12-30 1975-07-29 Itt Hanger insert for steel floor deck
US4007563A (en) * 1975-06-02 1977-02-15 Momoki Nakagawa Deck anchor
US4084364A (en) * 1976-04-12 1978-04-18 Roblin Industries, Inc. Compression strut for suspended ceiling
US4106745A (en) * 1973-05-07 1978-08-15 Phillips Petroleum Company Apparatus for attaching an insert in a mold
US4361304A (en) * 1980-05-27 1982-11-30 A. Lakin & Sons, Inc. Exhaust system hanger
US4492499A (en) * 1981-04-08 1985-01-08 North American Van Lines, Inc. Frame fixture arrangement
US4566240A (en) * 1983-03-11 1986-01-28 Schilger Herbert K Composite floor system
US5380502A (en) * 1993-07-26 1995-01-10 Atlantic Richfield Company System for suspending reactor tubes in a reactor
US20030084621A1 (en) * 2001-11-02 2003-05-08 Leahy Lawrence E. Breakaway signpost connector
US20040201155A1 (en) * 2003-04-11 2004-10-14 Astoria Industries Of Iowa, Inc. Utility vehicle mounting assembly
US20060155288A1 (en) * 1999-01-05 2006-07-13 Little James S Medical tack with a variable effective length
US7093400B1 (en) * 2005-03-21 2006-08-22 Thompson William J Concrete insert for poured concrete floors
US20070095004A1 (en) * 2005-10-17 2007-05-03 Nibco Incorporated Concrete deck insert
US20090272067A1 (en) * 2008-05-02 2009-11-05 Rory Gilham Deck Anchor Insert
US20100290859A1 (en) * 2009-05-12 2010-11-18 MW Engineering Threaded anchor for concrete metal deck floors
US20130056192A1 (en) * 2011-09-05 2013-03-07 Foxconn Technology Co., Ltd. Heat dissipation device with fastener
US20130099068A1 (en) * 2011-10-21 2013-04-25 Donna E. Lacour Pipe hanger assembly
WO2014016445A1 (en) * 2012-07-26 2014-01-30 Cubria Home S.L. Single-family accommodation having a modular structure
WO2014031647A1 (en) * 2012-08-20 2014-02-27 Espinosa Thomas M Anchor holders and anchor assemblies for metal decks
US20140083044A1 (en) * 2011-06-03 2014-03-27 Areva Gmbh Anchoring system between a concrete component and a steel component
US20150196785A1 (en) * 2013-11-05 2015-07-16 Mark A. Borchardt Fall Protection Tie-Off Anchor Point and Method
US20150252915A1 (en) * 2014-03-04 2015-09-10 Cooper Technologies Company Lateral Sway Brace
US20150252916A1 (en) * 2014-03-04 2015-09-10 Cooper Technologies Company Lateral Sway Brace
US20160001976A1 (en) * 2013-02-12 2016-01-07 Murata Machinery, Ltd. Storage shelf
US20160032957A1 (en) * 2013-02-15 2016-02-04 Kab Hee JUNG Insert bolt having anti-turn function
US9394706B2 (en) 2013-10-08 2016-07-19 Simpson Strong-Tie Company, Inc. Concrete anchor
US20160333532A1 (en) * 2016-07-26 2016-11-17 Shahriar Eftekharzadeh Apparatus and Method for Installing Utility Service Lines in Road Pavements
US9739297B1 (en) * 2016-11-18 2017-08-22 Francis F. Coghan, IV Clip apparatus to removably secure item against external surface to which apparatus is secured
US9850659B2 (en) * 2015-03-31 2017-12-26 Steven A. Roth Method of attaching a hanger to a deck
US9982427B2 (en) * 2016-09-06 2018-05-29 Cooper Technologies Company Concrete deck insert
EP3339663A1 (en) 2016-12-23 2018-06-27 Black & Decker Inc. System and tool for wireless retrieval of measured component data
US20180356033A1 (en) * 2017-06-12 2018-12-13 Black & Decker Inc. Cast-in-place anchor assembly
US10396537B2 (en) * 2016-08-03 2019-08-27 Schneider Electric USA, Inc. Busway vertical spring hanger
CN111022474A (en) * 2019-12-29 2020-04-17 中建八局第一建设有限公司 Bolt pre-embedded mounting structure and mounting method for profiled steel sheet
CN111441526A (en) * 2019-01-17 2020-07-24 柏诚工程股份有限公司 Method for installing upper fixed node of clean ceiling of electronic factory building
US10961739B2 (en) * 2019-05-14 2021-03-30 An Se Lee Ceiling type seismic impact buffer unit
US11002005B2 (en) * 2017-05-19 2021-05-11 Makesoon Inc. Insert for construction slab
USRE48981E1 (en) 2014-01-14 2022-03-22 Simpson Strong-Tie Company Inc. Thrust nut
US11414855B2 (en) * 2011-03-18 2022-08-16 Cetres Holdings, Llc Concrete anchor coupling assembly and anchor rod holder
US11480267B2 (en) * 2020-10-27 2022-10-25 Benchmark Harris System and method for protection of under-slab utilities from changes in soil volume
US11598092B1 (en) * 2016-02-08 2023-03-07 Steven A. Roth Metal decking hanger
US20240044142A1 (en) * 2022-08-04 2024-02-08 Tate Access Floors, Inc. Pre-assembled decking panel and strut assembly for data center ceilings and roofs
US11898585B2 (en) * 2017-12-22 2024-02-13 Verco Decking, Inc. Decking hanger system and decking hanger

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CN105155678B (en) * 2015-06-25 2017-09-08 周兆弟 Unitary nut connector
CN111779891B (en) * 2019-10-25 2021-10-08 河北帕克轨道交通设备有限公司 Be applied to support and hafen groove suit of hafen groove

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US1837930A (en) * 1931-03-04 1931-12-22 Raymond F Waite Hanger
US2387468A (en) * 1944-01-04 1945-10-23 Willis J Ritzel Fastener
US3372523A (en) * 1966-06-13 1968-03-12 Structural Fasteners Inc Structural fasteners
US3487746A (en) * 1968-04-01 1970-01-06 Bertram H Kapnek Screw anchor
US3616591A (en) * 1969-11-12 1971-11-02 Rannalt C Bahr Fastener with anchoring head

Cited By (62)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3896599A (en) * 1971-12-30 1975-07-29 Itt Hanger insert for steel floor deck
US4106745A (en) * 1973-05-07 1978-08-15 Phillips Petroleum Company Apparatus for attaching an insert in a mold
US4007563A (en) * 1975-06-02 1977-02-15 Momoki Nakagawa Deck anchor
US4084364A (en) * 1976-04-12 1978-04-18 Roblin Industries, Inc. Compression strut for suspended ceiling
US4361304A (en) * 1980-05-27 1982-11-30 A. Lakin & Sons, Inc. Exhaust system hanger
US4492499A (en) * 1981-04-08 1985-01-08 North American Van Lines, Inc. Frame fixture arrangement
US4566240A (en) * 1983-03-11 1986-01-28 Schilger Herbert K Composite floor system
US5380502A (en) * 1993-07-26 1995-01-10 Atlantic Richfield Company System for suspending reactor tubes in a reactor
US9295581B2 (en) * 1999-01-05 2016-03-29 Second Sight Medical Products, Inc. Medical tack with a variable effective length
US20060155288A1 (en) * 1999-01-05 2006-07-13 Little James S Medical tack with a variable effective length
US20030084621A1 (en) * 2001-11-02 2003-05-08 Leahy Lawrence E. Breakaway signpost connector
US6959902B2 (en) * 2001-11-02 2005-11-01 Leahy Lawrence E Breakaway signpost connector
US7503553B2 (en) * 2003-04-11 2009-03-17 Astoria Industries Of Iowa, Inc. Utility vehicle mounting assembly
US20040201155A1 (en) * 2003-04-11 2004-10-14 Astoria Industries Of Iowa, Inc. Utility vehicle mounting assembly
US7093400B1 (en) * 2005-03-21 2006-08-22 Thompson William J Concrete insert for poured concrete floors
US8201381B2 (en) * 2005-10-17 2012-06-19 Richard Heath Concrete deck insert
US20070095004A1 (en) * 2005-10-17 2007-05-03 Nibco Incorporated Concrete deck insert
US20090272067A1 (en) * 2008-05-02 2009-11-05 Rory Gilham Deck Anchor Insert
US20100290859A1 (en) * 2009-05-12 2010-11-18 MW Engineering Threaded anchor for concrete metal deck floors
US8267628B2 (en) * 2009-05-12 2012-09-18 MW Engineering Threaded anchor for concrete metal deck floors
US11414855B2 (en) * 2011-03-18 2022-08-16 Cetres Holdings, Llc Concrete anchor coupling assembly and anchor rod holder
US20140083044A1 (en) * 2011-06-03 2014-03-27 Areva Gmbh Anchoring system between a concrete component and a steel component
US20130056192A1 (en) * 2011-09-05 2013-03-07 Foxconn Technology Co., Ltd. Heat dissipation device with fastener
US9091372B2 (en) * 2011-10-21 2015-07-28 Donna E. Lacour Pipe hanger assembly
US20130099068A1 (en) * 2011-10-21 2013-04-25 Donna E. Lacour Pipe hanger assembly
WO2014016445A1 (en) * 2012-07-26 2014-01-30 Cubria Home S.L. Single-family accommodation having a modular structure
WO2014031647A1 (en) * 2012-08-20 2014-02-27 Espinosa Thomas M Anchor holders and anchor assemblies for metal decks
US11401708B2 (en) * 2012-08-20 2022-08-02 Cetres Holdings, Llc Anchor holders and anchor assemblies for metal decks
US10851540B2 (en) 2012-08-20 2020-12-01 Cetres Holdings, Llc Anchor holders and anchor assemblies for metal decks
US10400440B2 (en) * 2012-08-20 2019-09-03 Cetres Holdings, Llc Anchor holders and anchor assemblies for metal decks
US9567741B2 (en) 2012-08-20 2017-02-14 Cetres Holdings, Llc Anchor holders and anchor assemblies for metal decks
US20160001976A1 (en) * 2013-02-12 2016-01-07 Murata Machinery, Ltd. Storage shelf
US9359135B2 (en) * 2013-02-12 2016-06-07 Murata Machinery, Ltd. Storage shelf
US9556895B2 (en) * 2013-02-15 2017-01-31 Kab Hee JUNG Insert bolt having anti-turn function
US20160032957A1 (en) * 2013-02-15 2016-02-04 Kab Hee JUNG Insert bolt having anti-turn function
US9394706B2 (en) 2013-10-08 2016-07-19 Simpson Strong-Tie Company, Inc. Concrete anchor
US9945115B2 (en) 2013-10-08 2018-04-17 Simpson Strong-Tie Company, Inc. Concrete anchor
US9180323B2 (en) * 2013-11-05 2015-11-10 Mark A Borchardt Fall protection tie-off anchor point and method
US20150196785A1 (en) * 2013-11-05 2015-07-16 Mark A. Borchardt Fall Protection Tie-Off Anchor Point and Method
USRE48981E1 (en) 2014-01-14 2022-03-22 Simpson Strong-Tie Company Inc. Thrust nut
US9683681B2 (en) * 2014-03-04 2017-06-20 Cooper Technologies Company Lateral sway brace
US20150252915A1 (en) * 2014-03-04 2015-09-10 Cooper Technologies Company Lateral Sway Brace
US20150252916A1 (en) * 2014-03-04 2015-09-10 Cooper Technologies Company Lateral Sway Brace
US9850659B2 (en) * 2015-03-31 2017-12-26 Steven A. Roth Method of attaching a hanger to a deck
US10718112B1 (en) * 2015-03-31 2020-07-21 Steven A. Roth Method of attaching a hanger to a deck
US20230220668A1 (en) * 2016-02-08 2023-07-13 Steven A. Roth Method of attaching a load to metal decking
US11598092B1 (en) * 2016-02-08 2023-03-07 Steven A. Roth Metal decking hanger
US20160333532A1 (en) * 2016-07-26 2016-11-17 Shahriar Eftekharzadeh Apparatus and Method for Installing Utility Service Lines in Road Pavements
US10396537B2 (en) * 2016-08-03 2019-08-27 Schneider Electric USA, Inc. Busway vertical spring hanger
US9982427B2 (en) * 2016-09-06 2018-05-29 Cooper Technologies Company Concrete deck insert
US9739297B1 (en) * 2016-11-18 2017-08-22 Francis F. Coghan, IV Clip apparatus to removably secure item against external surface to which apparatus is secured
EP3339663A1 (en) 2016-12-23 2018-06-27 Black & Decker Inc. System and tool for wireless retrieval of measured component data
US11002005B2 (en) * 2017-05-19 2021-05-11 Makesoon Inc. Insert for construction slab
US10634281B2 (en) * 2017-06-12 2020-04-28 Black & Decker Inc. Cast-in-place anchor assembly
US20180356033A1 (en) * 2017-06-12 2018-12-13 Black & Decker Inc. Cast-in-place anchor assembly
US11898585B2 (en) * 2017-12-22 2024-02-13 Verco Decking, Inc. Decking hanger system and decking hanger
CN111441526A (en) * 2019-01-17 2020-07-24 柏诚工程股份有限公司 Method for installing upper fixed node of clean ceiling of electronic factory building
US10961739B2 (en) * 2019-05-14 2021-03-30 An Se Lee Ceiling type seismic impact buffer unit
CN111022474A (en) * 2019-12-29 2020-04-17 中建八局第一建设有限公司 Bolt pre-embedded mounting structure and mounting method for profiled steel sheet
US11480267B2 (en) * 2020-10-27 2022-10-25 Benchmark Harris System and method for protection of under-slab utilities from changes in soil volume
US20230091971A1 (en) * 2020-10-27 2023-03-23 Benchmark Harris System and Method for Protection of Under-Slab Utilities From Changes in Soil Volume
US20240044142A1 (en) * 2022-08-04 2024-02-08 Tate Access Floors, Inc. Pre-assembled decking panel and strut assembly for data center ceilings and roofs

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Publication number Publication date
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CA998255A (en) 1976-10-12

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