US4566241A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Progressive demountable partition
Assignee: National Gypsum Co
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Filing: 1984-04-04
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Granted: 1986-01-28
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Expires: 2004-04-04
Abstract
Abstract A progressive demountable partition in which gypsum wallboard is affixed against I-shaped vertical studs by a plurality of small sheet metal clips having short tangs projecting into the wallboard back face and having a flange-engaging forwardly extending portion engaged behind the vertical stud flanges.
Inventors
- 👤 Joseph W. Schneller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 14:17
CPC Classifications
E; E04; E04B; E04B2/00; E04B2/74; E04B2/7407; E04B2/7453; E04B2/7457; E04B2002/7461; E04B2002/7462; E04B2002/7464; E04B2002/7475; Y; Y10; Y10S; Y10S52/00; Y10S52/06
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
134 words
A wallboard fastener clip comprising a single almost flat sheet metal body from which a plurality of short tangs are partially cut and bent perpendicularly therefrom, said almost flat body including a wallboard-engaging rearward flat portion and a flange-engaging forwardly extending, forward, almost flat portion disposed slightly out of the plane of said rearward flat portion and extending away from said rearward portion, said plurality of tangs being elongate, narrow strips of sheet metal cut from the sheet metal of said rearward flat portion and extending perpendicularly from said rearward flat portion in a direction opposite to the side of said flat portion on which said forwardly extending portion is disposed, said forwardly extending portion having a stud flange contacting portion which is disposed slightly outside of the plane of said rearward flat portion.
Claim 2
Dependent Claim
134 words
A wallboard fastener clip comprising a single almost flat sheet metal body from which a plurality of short tangs are partially cut and bent perpendicularly therefrom, said almost flat body including a wallboard-engaging rearward flat portion and a flange-engaging forwardly extending, forward, almost flat portion disposed slightly out of the plane of said rearward flat portion and extending away from said rearward portion, said plurality of tangs being elongate, narrow strips of sheet metal cut from the sheet metal of said rearward flat portion and extending perpendicularly from said rearward flat portion in a direction opposite to the side of said flat portion on which said forwardly extending portion is disposed, said forwardly extending portion having a stud flange contacting portion which is disposed slightly outside of the plane of said rearward flat portion.
Claim 3
Dependent Claim
22 words
A wallboard fastener clip as defined in claim 1 wherein said tangs are about 0.1 inch wide and about 5/16 inch long.
Claim 4
Dependent Claim
57 words
A wallboard fastener clip as defined in claim 1 wherein said forwardly extending portion includes a first outwardly extending portion connected at one end to said rearward flat portion, a second inwardly extending portion connected to said first portion and a third outwardly extending lip portion connected to said second portion at said stud flange contacting portion.
Claim 5
Dependent Claim
24 words
A wallboard fastener clip as defined in claim 1 wherein the number of tangs extending perpendicularly from said rearward flat portion is about ten.
Claim 6
Dependent Claim
49 words
A wallboard fastener clip as defined in claim 4 wherein said tangs are formed of metal removed from said rearward flat portion, said removed metal forming laterally extending slots with two tangs being formed from the metal of each said slot, and said slots being in a staggered arrangement.
Claim 7
Dependent Claim
99 words
A progressive demountable partition comprising a plurality of vertical metal studs of an I-shaped cross section, said studs being mounted in vertical parallel spaced relation, with a plurality of wallboards mounted against the flanges of said I-shaped stud on both sides of said partition, each said wallboard having a plurality of wallboard fastener clips as defined in claim 1 affixed in spaced positions along each vertical edge, said clips having a plurality of short tangs driven into the back face of said wallboard and having said flange-engaging forwardly extending portion disposed on the inner surface of said stud flanges.
Claim 8
Dependent Claim
35 words
A progressive demountable partition as defined in claim 6 wherein said vertical studs are mounted at respective bottom and top ends in a floor track and a ceiling track, and said wallboards are gypsum wallboards.
Claim 9
Dependent Claim
30 words
A progressive demountable partition as defined in claim 7 wherein said wallboard is mechanically affixed at the bottom and top edges to respectively said floor track and said ceiling track.
Claim 10
Dependent Claim
57 words
A progressive demountable partition as defined in claim 6 wherein each said stud is formed of a single folded sheet of sheet metal and includes one flange on each side of said stud having a double thickness of sheet metal and a second flange on each side of said stud having a short double thick edge portion.
Claim 11
Dependent Claim
24 words
A progressive demountable partition as defined in claim 6 wherein said clips on each wallboard edge are disposed in about two-foot apart spaced positions.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-01-27 | 1989-07-29 | 1990-01-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-01-27 | 1993-07-29 | 1994-01-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-01-27 | 1997-07-29 | 1998-01-28 | $7700.00 | Window Closed / Lapsed |