US3769774A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Steel deck insert
Assignee: Phillips Drill Co Inc
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Filing: 1972-06-26
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Granted: 1973-11-06
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Expires: 1992-06-26
Abstract
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.
Inventors
- 👤 W Barnes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:09
CPC Classifications
F; F16; F16L; F16L3/00; F16L3/14; E; E04; E04B; E04B1/00; E04B1/38; E04B1/41; E04B1/4157; E04B9/00; E04B9/18; Y; Y10; Y10S; Y10S411/00; Y10S411/955; Y10S411/965; Y10S411/97
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
188 words
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.
Claim 2
Dependent Claim
188 words
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.
Claim 3
Dependent Claim
37 words
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.
Claim 4
Dependent Claim
71 words
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.
Claim 5
Dependent Claim
13 words
The invention as claimed in claim 1 in which the head is offset.
Claim 6
Dependent Claim
13 words
The invention as claimed in claim 1 in which the head is non-circular.
Claim 7
Dependent Claim
13 words
The invention as claimed in claim 5 in which the head is offset.
Claim 8
Dependent Claim
225 words
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.
Claim 9
Dependent Claim
225 words
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.
Claim 10
Dependent Claim
61 words
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.
Claim 11
Dependent Claim
13 words
The invention as claimed in claim 7 in which the head is offset.
Claim 12
Dependent Claim
13 words
The invention as claimed in claim 7 in which the head is non-circular.
Claim 13
Dependent Claim
13 words
The invention as claimed in claim 10 in which the head is offset.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-11-05 | 1977-05-07 | 1977-11-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-11-05 | 1981-05-07 | 1981-11-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-11-05 | 1985-05-07 | 1985-11-06 | $7700.00 | Window Closed / Lapsed |