Sheet metal nail for securing coverings to cementitious materials
US4043246A · kind A · utility
2Cited by
5References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 22, 1976 |
| Grant date | Aug 23, 1977 |
| Priority date | — |
| Expiry date | Oct 22, 1996 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16B15/04
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
An improved fastener of the sheet metal type for anchoring coverings to soft, not-fully cured cementitious masses, has a head or cap portion and a hollow shank portion comprised of a pair of generally U-shaped, opposed legs, one leg being substantially fully enclosed within the other, one such leg being rigidly fixed to said head, the other leg being hingedly connected to the head whereby the rigid leg ensures proper alignment of the head with the surface of the covering material and the hinged leg is caused to spread upon installation and thereby lock the fastener within the cementitious mass.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.