Roofing fastener
US4900208A · kind A · utility
59Cited by
14References
15Claims
0Family size
Inventors
Key dates
| Filing date | Jun 9, 1988 |
| Grant date | Feb 13, 1990 |
| Priority date | — |
| Expiry date | Jun 9, 2008 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S411/914
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A fastener for insulated roofing comprises a non-metallic, screw-threaded shank, having a penetrating point at one end of the shank and a transverse plate carried at the other end of the shank. The shank and transverse plate are preferably integrally method out of a polyetherimide resin formulation which has a tensile strength of at least 15,000 psi. as tested by ASTM D638. Such a fastener has a great advantage in terms of cost and lack of corrodability, while still exhibiting the required strength. Also, a universal driver socket is provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.