Patent US3983779A successfully refreshed from Google Patents.
US3983779A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Nail
Assignee: Eaton Corp
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Filing: 1975-03-10
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Granted: 1976-10-05
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Expires: 1995-03-10
Abstract
Abstract An improved sheet metal nail utilizing a protrusion, or protuberance, aligned with the locking tangs and interposed the tangs and the leading edge of the nail is provided. The protrusion enters the media into which the nail is driven prior to entry of the tangs and thus provides a lead hole for the tangs to minimize damage thereto during the nail driving operation.
Inventors
- 👤 George J. Dimas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:33
CPC Classifications
F; F16; F16B; F16B15/00; F16B15/06
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
126 words
An improved sheet metal nail of the type comprising a generally horizontally extending head and a generally vertically extending shank, said shank defined by two vertically extending surfaces and having at least one tang extending outwardly from one of said vertically extending surfaces, the improvement comprising: a protrusion extending outwardly from said one vertically extending surface of said shank, said protrusion aligned with said tang and interposed said tang and said leading edge, said protrusion extending outwardly from said one vertically extending surface by a distance less than the distance the free end of said tang is spaced from said one vertically extending surface, said protrusion formed by a continuous dimpled depression in the vertically extending surface of said shank opposite said one vertically extending surface.
Claim 2
Dependent Claim
126 words
An improved sheet metal nail of the type comprising a generally horizontally extending head and a generally vertically extending shank, said shank defined by two vertically extending surfaces and having at least one tang extending outwardly from one of said vertically extending surfaces, the improvement comprising: a protrusion extending outwardly from said one vertically extending surface of said shank, said protrusion aligned with said tang and interposed said tang and said leading edge, said protrusion extending outwardly from said one vertically extending surface by a distance less than the distance the free end of said tang is spaced from said one vertically extending surface, said protrusion formed by a continuous dimpled depression in the vertically extending surface of said shank opposite said one vertically extending surface.
Claim 3
Dependent Claim
22 words
The improved sheet metal nail of claim 1 wherein said improvement further comprises an aperture in said shank adjacent the leading edge.
Claim 4
Dependent Claim
46 words
The improved sheet metal nail of claim 1 wherein said shank has at least one vertically extending column of tangs, each of said tangs separated by a different distance from said head and said shank has at least one protrusion aligned with each column of tangs.
Claim 5
Dependent Claim
34 words
The improved sheet metal nail of claim 1 wherein said dimpled depressions are of a generally triangular shape having a base generally parallel to the head and an apex extending towards the leading edge.
Claim 6
Dependent Claim
139 words
An improved sheet metal nail of the type having a generally T shaped body comprising a generally horizontal, flat head and a generally vertical shank, said shank being generally arcuate in cross-section with at least one tang extending outwardly from the convex surface thereof, said shank having a generally V shaped leading edge at its end distant the head, said tang comprising a tongue formed from a generally inverted U shaped slot cut in said shank, the improvement comprising: at least one protrusion extending from said convex surface and aligned with said tang, said protrusion interposed said tang and said leading edge, said protrusion comprising a continuous, non-broken dimple formed in said concave surface, said protrusion extending a distance from said convex surface less than the distance the free end of said tang is spaced from said convex surface.
Claim 7
Dependent Claim
139 words
An improved sheet metal nail of the type having a generally T shaped body comprising a generally horizontal, flat head and a generally vertical shank, said shank being generally arcuate in cross-section with at least one tang extending outwardly from the convex surface thereof, said shank having a generally V shaped leading edge at its end distant the head, said tang comprising a tongue formed from a generally inverted U shaped slot cut in said shank, the improvement comprising: at least one protrusion extending from said convex surface and aligned with said tang, said protrusion interposed said tang and said leading edge, said protrusion comprising a continuous, non-broken dimple formed in said concave surface, said protrusion extending a distance from said convex surface less than the distance the free end of said tang is spaced from said convex surface.
Claim 8
Dependent Claim
33 words
The improved sheet metal nail of claim 5 wherein said dimple is of a generally triangular shape having a base generally parallel to the head and an apex extending towards the leading edge.
Claim 9
Dependent Claim
23 words
The improved nail of claim 6 wherein said improvement further comprises an aperture in said shank, said aperture located adjacent said leading edge.
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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) | 1979-10-05 | 1980-04-05 | 1980-10-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-10-05 | 1984-04-05 | 1984-10-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-10-05 | 1988-04-05 | 1988-10-05 | $7700.00 | Window Closed / Lapsed |