Hollow sheet metal nail
US4031802A · kind A · utility
11Cited by
7References
1Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 12, 1976 |
| Grant date | Jun 28, 1977 |
| Priority date | — |
| Expiry date | Jan 12, 1996 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE04D3/3603
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A sheet metal nail of the type used to fasten a first or covering material to a lightweight base material in which a pair of interfitted channel shaped leg or shank members are pivotally connected to the nail head in a manner to spread outwardly into the base material when the nail is driven therein. The penetrating ends of the shank members are tapered to form cutting edges so that as the nail is driven, the penetrating ends of the shank members cut through the first material without tearing such material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.