Fastening device for a roof sealing strip or the like
US5557897A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 21, 1994 |
| Grant date | Sep 24, 1996 |
| Priority date | — |
| Expiry date | Nov 21, 2014 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE04D5/14
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A fastening device for anchoring a sealing strip on a roof includes an elongated fastener which penetrates both a holder and the sealing strip and has a drill tip at a lower end thereof extending into the roof substructure. An opposite upper end of the fastener has an enlarged upper end engaged in an opening in the holder to press the holder against and anchor the sealing strip on the roof. A cover having a recessed underside for receiving the holder and a central hole with a slit-like depression for receiving a catch-shaped projection extending upwardly from the head of the fastener is rotated to drive the fastener and the holder into position on the sealing strip while at the same time covering the opening in the holder to prevent entry of rainwater and the like. As the cover engages the sealing strip, the cover eventually disengages the fastener so that only the cover rotates. Continued rotation of the cover causes friction between the cover and the sealing strip to heat and thereby friction weld the fastening device to the sealing strip.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.