US3925955A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Staple for light gauge metal piercing
Assignee: Senco Products Inc
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Filing: 1973-08-16
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Granted: 1975-12-16
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Expires: 1993-08-16
Abstract
Abstract The application discloses a staple for piercing light gauge metal as, for example, for securing furring strips to a light gauge metal channel. The piercing ends of the staple have either their inside surfaces or their outside surfaces beveled, leaving a blunt point. The parameters of the bevels are set forth in detail. The effect of the point configuration is that the staple, instead of punching out slugs of the sheet metal, bends down tabs therefrom, and concurrently the staple legs are slightly deflected toward each other, in the case of an outside bevel, or apart from each other in the case of an inside bevel. The holding power of the staple in the light gauge sheet metal is greatly increased.
Inventors
- 👤 Carl T Becht
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 11:53
CPC Classifications
F; F16; F16B; F16B15/00; F16B15/0015; Y; Y10; Y10S; Y10S411/00; Y10S411/92
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
157 words
A structure comprising an element secured to a piece of light gauge sheet metal by means of a staple comprising a drivable Ushaped wire member having legs terminating in piercing ends, the legs of said staple, at their piercing ends, having their outside surfaces beveled, leaving partial blunt points, the length of said bevels axially of said legs being at least about 50% of the wire size and the angle of said bevels being such as to remove between about 25% and about 50% of the wire size at the points, in the ''''as driven'''' condition of said staple said legs passing through said element and said piece of light gauge sheet metal securing said element and said light gauge sheet metal piece together in abutting relationship, tabs of said sheet metal being bent down along and bearing against the outsides of the legs of said staple, and the legs of said staple converging toward each other.
Claim 2
Dependent Claim
157 words
A structure comprising an element secured to a piece of light gauge sheet metal by means of a staple comprising a drivable Ushaped wire member having legs terminating in piercing ends, the legs of said staple, at their piercing ends, having their outside surfaces beveled, leaving partial blunt points, the length of said bevels axially of said legs being at least about 50% of the wire size and the angle of said bevels being such as to remove between about 25% and about 50% of the wire size at the points, in the ''''as driven'''' condition of said staple said legs passing through said element and said piece of light gauge sheet metal securing said element and said light gauge sheet metal piece together in abutting relationship, tabs of said sheet metal being bent down along and bearing against the outsides of the legs of said staple, and the legs of said staple converging toward each other.
Claim 3
Dependent Claim
158 words
A structure comprising an element secured to a piece of light gauge sheet metal by means of a staple comprising a drivable U-shaped wire member having legs terminating in piercing ends, the legs of said staple, at their piercing ends, having their inside surface beveled, leaving partial blunt points, the length of said bevels axially of said legs being at least about 50% of the wire size and the angle of said bevels being such as to remove between about 25% and about 50% of the wire size at the points, in the ''''as driven'''' condition of said staple said legs passing through said element and said piece of light gauge sheet metal securing said element and said light gauge sheet metal piece together in abutting relationship, tabs of said sheet metal being bent down along and bearing against the insides of the legs of said staple, and the legs of said staple diverging away from each other.
Claim 4
Dependent Claim
158 words
A structure comprising an element secured to a piece of light gauge sheet metal by means of a staple comprising a drivable U-shaped wire member having legs terminating in piercing ends, the legs of said staple, at their piercing ends, having their inside surface beveled, leaving partial blunt points, the length of said bevels axially of said legs being at least about 50% of the wire size and the angle of said bevels being such as to remove between about 25% and about 50% of the wire size at the points, in the ''''as driven'''' condition of said staple said legs passing through said element and said piece of light gauge sheet metal securing said element and said light gauge sheet metal piece together in abutting relationship, tabs of said sheet metal being bent down along and bearing against the insides of the legs of said staple, and the legs of said staple diverging away from each other.
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) | 1978-12-15 | 1979-06-16 | 1979-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-15 | 1983-06-16 | 1983-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-15 | 1987-06-16 | 1987-12-16 | $7700.00 | Window Closed / Lapsed |