Roofing membrane to roof opening sealing system and hatchway employing same
US4941300A · kind A · utility
Inventor
Key dates
| Filing date | Apr 5, 1989 |
| Grant date | Jul 17, 1990 |
| Priority date | — |
| Expiry date | Apr 5, 2009 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE04D13/1407
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A sealing system is shown for sealing between a waterproof roofing membrane and a curb around a roof opening, including a cap flashing for the curb, a top flange connected to the cap flashing and extending outwardly therefrom and a wall flange connected to the top flange which extends downwardly and forms a filler channel defined by the top flange, the wall flange and the curb. The roofing membrane is held in the filler channel by folding it over a longitudinal resilient filler material sized to fit closely within the filler channel. A plurality of spaced-apart tabs integral with the wall flange are bent into the filler channel beneath the filler material to securely hold the membrane therein without the necessity for any loose fasteners. A preassembled sealing system perimeter frame ready for mounting on an existing curb, a sealing system with an attached hatchway cover, and a complete hatchway with perimeter frame sealing system, cover, curb and associated flashing are also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.