US3721153A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Relating to nails
Assignee: Individual
•
Filing: 1971-09-08
•
Granted: 1973-03-20
•
Expires: 1991-09-08
Abstract
Abstract A nail of ''''I'''' section having a flat web the flanges along the opposite sides of the web of the section extending in the lengthwise direction of the nail, the web having a gap of V form extending inwardly of the web from the leading end of the nail the edges of the gap diverging from the inner end thereof so as to provide a pointed end at each side of the web at said leading end of the nail. The edges of the gap can each be formed as a knife edge to facilitate penetration of the nail.
Inventors
- 👤 S Rosen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 15:41
CPC Classifications
F; F16; F16B; F16B15/00; Y; Y10; Y10S; Y10S411/00; Y10S411/912
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
148 words
A nail of ''''I'''' section having a flat web and flanges along the opposite sides of the web, the flanges extending parallel to each other for a major portion of their length, each flange being continuous from one end of the nail to the other and each flange having a curved convex outer surface and flat inner surfaces perpendicular to the web, the side edges and the outer surface of each flange tapering for a short distance near the leading end to a sharp point at the leading end of the nail, the web having a gap of V form at the leading end of the nail, the edges of the gap diverging from the inner end of the gap towards the leading end of the nail and merging with the points formed by the flanges, and the edges of the gap being formed as tapered knife eDges.
Claim 2
Dependent Claim
148 words
A nail of ''''I'''' section having a flat web and flanges along the opposite sides of the web, the flanges extending parallel to each other for a major portion of their length, each flange being continuous from one end of the nail to the other and each flange having a curved convex outer surface and flat inner surfaces perpendicular to the web, the side edges and the outer surface of each flange tapering for a short distance near the leading end to a sharp point at the leading end of the nail, the web having a gap of V form at the leading end of the nail, the edges of the gap diverging from the inner end of the gap towards the leading end of the nail and merging with the points formed by the flanges, and the edges of the gap being formed as tapered knife eDges.
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) | 1976-03-19 | 1976-09-18 | 1977-03-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-03-19 | 1980-09-18 | 1981-03-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-03-19 | 1984-09-18 | 1985-03-20 | $7700.00 | Window Closed / Lapsed |