Swiveling roofing washer
US5803693A · kind A · utility
49Cited by
4References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 17, 1997 |
| Grant date | Sep 8, 1998 |
| Priority date | — |
| Expiry date | Apr 17, 2017 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE04D3/3603
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A swiveling roofing washer for use with a roofing fastener has a plate. The plate defines a centrally positioned fastener opening. The plate further has a bottom surface for engagement to a roofing membrane, and an oppositely positioned top surface. The top surface has a swivel surface portion defining a convex surface adjacent and coaxial with the fastener opening. The swivel surface further defines a fastener head receiving channel adjacent the convex portion and coaxial with the fastener opening for engagement with the head portion of a roofing fastener.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.