Patent US4870794A successfully refreshed from Google Patents.
US4870794A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Clip for outwardly opening C-stud
Assignee: National Gypsum Properties LLC
•
Filing: 1988-12-09
•
Granted: 1989-10-03
•
Expires: 2008-12-09
Abstract
Abstract A clip for permitting attachment of wallboard to the open side of an outwardly opening C-shaped metal stud, including a clip body portion which engages three sides of the metal stud for increased stability, and a clip hanger portion which extends upwardly and inwardly through the stud open front side and has tabs which engage behind the flanges of the stud open front side.
Inventors
- 👤 Robert J. Menchetti
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 02:06
CPC Classifications
E; E04; E04B; E04B2/00; E04B2/74; E04B2/7407; E04B2/7409; E04B2002/7461; E04B2002/7475
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
186 words
In combination, an outwardly opening C-shaped metal stud and a wallboard attachment clip, said stud comprising an elongate back wall, a pair of perpendicularly directed elongate web portions and an open front side, said open front side having a pair of elongate opposed flanges with an elongate opening between said opposed flanges, said wallboard attachment clip comprising a channel shaped body portion and a hanger portion, said body portion including a face portion extending across said stud open front side and a pair of rearwardly directed narrow side portions which extend from said face portion rearwardly along a portion of said stud web portion, said hanger portion including a narrow neck and a wide upper end, said upper end having tabs disposed inwardly of said stud flanges, said hanger portion beinq adjoined to said face portion along a fold line, said hanger portion being inwardly bent along said fold line relative to the plane of said face portion at an angle of between about 20° and 80° and having a spring-like tendency to return to a lesser angle, whereby said flanges are grasped by said tabs.
Claim 2
Dependent Claim
186 words
In combination, an outwardly opening C-shaped metal stud and a wallboard attachment clip, said stud comprising an elongate back wall, a pair of perpendicularly directed elongate web portions and an open front side, said open front side having a pair of elongate opposed flanges with an elongate opening between said opposed flanges, said wallboard attachment clip comprising a channel shaped body portion and a hanger portion, said body portion including a face portion extending across said stud open front side and a pair of rearwardly directed narrow side portions which extend from said face portion rearwardly along a portion of said stud web portion, said hanger portion including a narrow neck and a wide upper end, said upper end having tabs disposed inwardly of said stud flanges, said hanger portion beinq adjoined to said face portion along a fold line, said hanger portion being inwardly bent along said fold line relative to the plane of said face portion at an angle of between about 20° and 80° and having a spring-like tendency to return to a lesser angle, whereby said flanges are grasped by said tabs.
Claim 3
Dependent Claim
18 words
The combination of claim 1 wherein said clip face portion is an uninterrupted section of screwable sheet metal.
Claim 4
Dependent Claim
18 words
The combination of claim 1 wherein said clip face portion includes at least one outwardly protruding pointed leg.
Claim 5
Dependent Claim
20 words
The combination of claim 1 wherein said clip face portion includes a pair of oppositely directed, outwardly protruding pointed legs.
Claim 6
Dependent Claim
18 words
The combination of claim 1 wherein said stud flanges include narrow face portions and inwardly directed stiffening lips.
Claim 7
Dependent Claim
17 words
The combination of claim 1 wherein said narrow side portions each have a sidewardly bent upper corner.
Claim 8
Dependent Claim
81 words
A hollow partition wall comprising the combination of an outwardly opening C-shaped metal stud and a wallboard attachment clip as defined in claim 1, said metal stud being one of a plurality of similar, horizontally spaced apart, outwardly opening, C-shaped metal studs disposed in a floor runner and extending upwardly therefrom, said wall further comprising wallboard affixed to said clip face portion of a plurality of said clips and thereby held against the open front side of said C-shaped metal studs.
Claim 9
Dependent Claim
23 words
A hollow partition wall as defined in claim 7 wherein said wallboard is screw attached to said clip face portion of said clips.
Claim 10
Dependent Claim
49 words
A hollow partition wall as defined in claim 7 wherein said clips each have a clip face portion which includes a pair of oppositely directed, outwardly protruding pointed legs, and said wallboard is attached to said clip face portion by said pointed legs protruding into edges of said wallboard.
Claim 11
Dependent Claim
21 words
A hollow partition as defined in claim 7 wherein said stud flanges include narrow face portions and inwardly directed stiffening lips.
Claim 12
Dependent Claim
21 words
A hollow partition as defined in claim 7 wherein said clip narrow side portions each have a sidewardly bent upper corner.
References Cited (Backward Citations)
US2116737A
Cited
US3234702A
Cited
US3266209A
Cited
US3918230A
Cited
US4481749A
Cited
US4567706A
Cited
US4708554A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-10-02 | 1993-04-03 | 1993-10-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-10-02 | 1997-04-03 | 1997-10-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-10-02 | 2001-04-03 | 2001-10-03 | $7700.00 | Window Closed / Lapsed |