Articulating plate assembly for retaining sheets of roofing material on a roof surface
US6282857A · kind A · utility
55Cited by
11References
31Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 9, 2000 |
| Grant date | Sep 4, 2001 |
| Priority date | — |
| Expiry date | Mar 9, 2020 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE04D5/145
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
An articulating plate assembly for retaining sheets of roofing material on a roof surface includes a plate defining (i) a generally hemispherically-shaped recess in a central portion of a first surface thereof, and (ii) an aperture disposed in the recess and extending through the plate, and a fastener having (i) a shank portion configured to pass through the aperture and to engage the roof surface, and (ii) a head portion having an underside of a curved configuration generally complementary to the recess.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.