Blister pressure relief valve

Details Blister pressure relief valve Blister pressure relief valve

1987-02-13

1988-07-19

Cohan, Alan

Static structures (e.g., buildings)

Enclosure or cover, with supplemental fluid-guiding port...

Attic vent

52303, 137197, E04B 700

Patent

active

047576545

ABSTRACT:
A valve is disclosed for venting and relieving pressure within a blister in built-up, multiple layer roof structure, which includes a hollow shaft having one open end adapted to be inserted into the blister and the other end covered by an air permeable, water impermeable membrane protected by a housing. The exterior of the shaft is threaded to permit penetration into the blister and holding of the valve. Air is vented through the membrane and out a passage provided in the housing.

REFERENCES:
patent: 2868219 (1959-01-01), Lucks
patent: 3326230 (1967-06-01), Frank
patent: 3619961 (1971-11-01), Sterrett et al.
patent: 3765895 (1973-09-01), Bellamy
patent: 3984947 (1976-10-01), Patry
patent: 4223486 (1980-09-01), Kelly
patent: 4484424 (1984-11-01), Logsdon

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