Patent US4641474A successfully refreshed from Google Patents.
US4641474A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sta-put wallboard joiner
Assignee: Individual
•
Filing: 1985-09-11
•
Granted: 1987-02-10
•
Expires: 2005-09-11
Abstract
Abstract A fastener for supporting a section of wallboard inserted into the opening of a wall consisting of a metal clip having a pair of flat segments for engaging adjacent portions of the section and the wall. A V-shaped member connects the two flat segments and spikes are employed on the V-shaped member and the flat segments to effect the attachment.
Inventors
- 👤 Robert C. Cannarsa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 20:19
CPC Classifications
E; E04; E04G; E04G23/00; E04G23/02; E04G23/0203; E04F; E04F13/00; E04F13/07; E04F13/08; E04F13/0889; E04F13/0892; E04G23/0207
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
215 words
A fastener for securing a section of wallboard fitted into an opening in a wall of wallboard construction comprising metal clip means having a pair of spaced flat surfaces substantially in the same plane as, and having teeth to penetrate, the adjacent exposed surfaces of said section of wallboard and said wall of wallboard when the former is inserted into said opening so that said spaced flat surfaces of said metal clip become flush with the surfaces of said section and will when said teeth fully penetrate said section and wall, V-shaped extension means comprising a pair of legs joined at the edges removed from said flat surfaces extending into the space between said section and wall, and teeth on the outside of and on both legs of said V-shaped extension directed toward said spaced flat surfaces so that when said clip is first mounted on said section of wallboard and the latter is then inserted into said opening in the wall of teeth on said clip will resist movement of said section once fully mounted in said opening flush with said wall, said spaced flat surfaces being flush against the surfaces of said wall and section simplifying the subsequent taping of the joint between said section and said wall on the exposed surfaces thereof.
Claim 2
Dependent Claim
215 words
A fastener for securing a section of wallboard fitted into an opening in a wall of wallboard construction comprising metal clip means having a pair of spaced flat surfaces substantially in the same plane as, and having teeth to penetrate, the adjacent exposed surfaces of said section of wallboard and said wall of wallboard when the former is inserted into said opening so that said spaced flat surfaces of said metal clip become flush with the surfaces of said section and will when said teeth fully penetrate said section and wall, V-shaped extension means comprising a pair of legs joined at the edges removed from said flat surfaces extending into the space between said section and wall, and teeth on the outside of and on both legs of said V-shaped extension directed toward said spaced flat surfaces so that when said clip is first mounted on said section of wallboard and the latter is then inserted into said opening in the wall of teeth on said clip will resist movement of said section once fully mounted in said opening flush with said wall, said spaced flat surfaces being flush against the surfaces of said wall and section simplifying the subsequent taping of the joint between said section and said wall on the exposed surfaces thereof.
Claim 3
Dependent Claim
25 words
The fastener of claim 1 in which the teeth extending from the flat surfaces of said clip are located along edges of said flat surfaces.
Claim 4
Dependent Claim
41 words
The fastener of claim 2 in which the V-shaped extension is resilient so that its compression during mounting of said clip will insure positive engagement of the teeth mounted on said extension with the adjacent portions of said section and wall.
Claim 5
Dependent Claim
40 words
The fastener of claim 3 in which said spaced flat surfaces extend beyond the teeth on said flat surfaces and said V-shaped extension thereby spreading the contact surface on said wall and section with a minimum of additional fastener material.
References Cited (Backward Citations)
US1373036A
Cited
US1492469A
Cited
US2283167A
Cited
US3073421A
Cited
US3378973A
Cited
US4062162A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-02-09 | 1990-08-11 | 1991-02-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-02-09 | 1994-08-11 | 1995-02-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-02-09 | 1998-08-11 | 1999-02-10 | $7700.00 | Window Closed / Lapsed |