US4120231A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hollow wall fastener
Assignee: Individual
•
Filing: 1977-02-10
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Granted: 1978-10-17
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Expires: 1997-02-10
Abstract
Abstract A hollow wall fastener for insertion in a hole formed in a wall panel between the inner and outer faces comprises an elongated body adapted for longitudinal insertion into the panel hole. The body includes a pair of spaced apart, parallel, legs interconnected by an integral transverse cross member. A toggle element is pivotally mounted adjacent inner end portions of the legs for movement about a transverse pivot axis between the legs. The toggle is pivotable from a first position aligned with the legs during insertion of the fastener and a second position generally normal to the legs wherein a face of the toggle element is adapted to bear against the inside surface of the wall after the element clears the hole on insertion. A deflectable finger is integrally formed on the transverse cross member and includes a free end portion extending between the legs for biasing the toggle element from the aligned position during insertion towards the toggle locking position after the toggle element has cleared the hole.
Inventors
- 👤 George A. Neumayer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 02:12
CPC Classifications
F; F16; F16B; F16B13/00; F16B13/04; F16B13/08; F16B13/0808
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
219 words
A hollow wall fastener for insertion in a hole formed in a wall panel between inner and outer faces comprising: an elongated body adapted for longitudinal insertion in said hole from said outer face toward said inner face, said elongated body including a pair of spaced apart legs having free outer ends and opposite inner end portions interconnected by an integral cross member; a toggle element pivotally mounted between said legs on axles extending into circular openings fixed in said legs adjacent said inner end portions for pivotal movement about a pivot axis extending transversely of said body, said toggle element being pivotal between a first position aligned with said legs for insertion of said body in said hole and a second position generally normal thereto wherein a face of said toggle element is adapted to bear against said inner face of said wall after said element clears said hole upon insertion of said body, said toggle element including a threaded aperture normal to said face thereof for receiving a threaded screw fastener when said toggle element is in said second position; and a deflectable finger integral with said cross member adjacent said toggle element and including a free end portion engageable with the toggle element for biasing said toggle element from said first position toward said second position.
Claim 2
Dependent Claim
219 words
A hollow wall fastener for insertion in a hole formed in a wall panel between inner and outer faces comprising: an elongated body adapted for longitudinal insertion in said hole from said outer face toward said inner face, said elongated body including a pair of spaced apart legs having free outer ends and opposite inner end portions interconnected by an integral cross member; a toggle element pivotally mounted between said legs on axles extending into circular openings fixed in said legs adjacent said inner end portions for pivotal movement about a pivot axis extending transversely of said body, said toggle element being pivotal between a first position aligned with said legs for insertion of said body in said hole and a second position generally normal thereto wherein a face of said toggle element is adapted to bear against said inner face of said wall after said element clears said hole upon insertion of said body, said toggle element including a threaded aperture normal to said face thereof for receiving a threaded screw fastener when said toggle element is in said second position; and a deflectable finger integral with said cross member adjacent said toggle element and including a free end portion engageable with the toggle element for biasing said toggle element from said first position toward said second position.
Claim 3
Dependent Claim
49 words
The wall fastener of claim 1 wherein said legs include outer end portions transversely scored at spaced longitudinal intervals thereon to facilitate bending of said legs against said outer panel face after said toggle element is in said second position to firmly secure said wall fastener in said hole.
Claim 4
Dependent Claim
26 words
The wall fastener of claim 1 wherein said transverse cross member is positioned intermediate said toggle element pivot axis and the outer ends of said legs.
Claim 5
Dependent Claim
22 words
The wall fastener of claim 1 wherein said free end of said integral finger extends toward said outer ends of said legs.
Claim 6
Dependent Claim
23 words
The wall fastener of claim 1 wherein said free end of said integral finger extends toward said inner end portions of said legs.
Claim 7
Dependent Claim
56 words
The wall fastener of claim 1 wherein said deflectable finger includes a curved segment having edges spaced inwardly of said legs and an outer free end portion normally positioned between said legs and deflectable out of said normal position by said toggle element during insertion of said wall fastener in said hole of said wall panel.
Claim 8
Dependent Claim
34 words
The wall fastener of claim 1 wherein said transverse pivot axis is positioned eccentric of the center of gravity of said toggle element whereby said toggle element is gravity biased toward said second position.
References Cited (Backward Citations)
US738660A
Cited
US860636A
Cited
US1040341A
Cited
GB222904A
Cited
US2609723A
Cited
US2519511A
Cited
US2908196A
Cited
DE1296883B
Cited
US3605547A
Cited
US3707898A
Cited
US3927597A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-10-16 | 1982-04-17 | 1982-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-10-16 | 1986-04-17 | 1986-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-10-16 | 1990-04-17 | 1990-10-17 | $7700.00 | Window Closed / Lapsed |