Roof safety anchor
US5553685A · kind A · utility
Inventor
Key dates
| Filing date | Dec 28, 1994 |
| Grant date | Sep 10, 1996 |
| Priority date | — |
| Expiry date | Dec 28, 2014 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE04G21/3276
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
The present invention relates to a personal fall-arrest safety anchor of a unitary form, including a hoop portion for encircling a standard dimensioned rafter and an apertured tab portion for attachment of a lifeline. The hoop portion includes two parallel vertical members and a bridging web unitarily connecting the lower ends of the vertical members. The bridging web prevents pullout of the anchor in the direction of forces exerted by a lifeline. The bridging web further allows a bracing or wedging member to be inserted between the bottom of the rafter and the bridging web, which act both as a locking wedge and additional load bearing support for the rafter. An independent overlapping plate installed over the vertical members of the anchor reduces the chances of fastener pull-out by a torque or shearing force upon fasteners. A preformed elastomeric flashing with a frusto-pyramidal apertured member is installed over the tab portion for weather-proofing the anchor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.