US3832931A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for fastening objects to walls or other supports
Assignee: Individual
•
Filing: 1972-12-19
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Granted: 1974-09-03
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Expires: 1992-12-19
Abstract
Abstract Device for fastening an object to a wall or support, of the type comprising an expansible peg adapted to be inserted into a hole formed in said wall or support, and an expansion plug adapted to be driven home into said peg and formed with notches or the like for anchoring said plug in said peg. The peripheral surface of the plug of said device and the inner wall of the corresponding peg are both divided into at least two separate areas extending longitudinally thereto, namely a first area comprising a series of anchoring teeth or notches or the like distributed through the whole or part of the length of said plug and peg, and a second plain slip area which, in the plug, constitutes an expansion ramp on at least one portion of its length.
Inventors
- 👤 M Talan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 01:37
CPC Classifications
F; F16; F16B; F16B13/00; F16B13/12; F16B13/126
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
155 words
A device for fastening an object to a support comprising an expansible peg having a peg cavity and adapted to be inserted into a hole formed in said support; an expansion plug adapted to be inserted into said peg cavity, the cross-sectional contour of said plug and the cross-sectional contour of said peg cavity having a polygonal, matching configuration so that the outer surface of said plug and the surface of said peg cavity are composed of corresponding elongated pairs of corresponding faces on said plug and on said surface of said peg cavity; complementary anchoring teeth formed on at least one of said elongated faces of said plug and on the corresponding face of said peg cavity, the other faces of said plug and of said peg cavity being plain and at least one said plain face on said plug constituting at least one expansion ramp along part of the length of said plug.
Claim 2
Independent Claim
155 words
A device for fastening an object to a support comprising an expansible peg having a peg cavity and adapted to be inserted into a hole formed in said support; an expansion plug adapted to be inserted into said peg cavity, the cross-sectional contour of said plug and the cross-sectional contour of said peg cavity having a polygonal, matching configuration so that the outer surface of said plug and the surface of said peg cavity are composed of corresponding elongated pairs of corresponding faces on said plug and on said surface of said peg cavity; complementary anchoring teeth formed on at least one of said elongated faces of said plug and on the corresponding face of said peg cavity, the other faces of said plug and of said peg cavity being plain and at least one said plain face on said plug constituting at least one expansion ramp along part of the length of said plug.
Claim 3
Dependent Claim
55 words
Fastening device according to claim 1, in which the rear end of said plug comprises a flange acting as an abutment when the plug is being inserted into the peg, said flange carrying externally a screw-threaded stud formed with a central tapped blind hole, said stud being adapted to act as a fastening member proper.
Claim 4
Dependent Claim
47 words
A device according to claim 1 in which the length of said plug is greater than the length of said peg, the leading end of said plug sloping strongly in order to produce an expansion of the peg end when said plug is inserted into said peg.
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) | 1977-09-02 | 1978-03-04 | 1978-09-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-02 | 1982-03-04 | 1982-09-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-02 | 1986-03-04 | 1986-09-03 | $7700.00 | Window Closed / Lapsed |