Integrally formed air flow valve

Details Integrally formed air flow valve Integrally formed air flow valve

1997-08-14

1998-12-01

Ferensic, Denise L.

Fluid handling

Line condition change responsive valves

Direct response valves

137843, 454162, F16K 1500

Patent

active

058425039

ABSTRACT:
A region in a thin plastic sheet is formed to include a series of corrugations. These corrugations are include alternating peaks or crests and roots or valleys. The plastic sheet is to be installed on a workpiece intermediate areas or zones periodically exposed to differential air pressures. Slit areas incorporated into adjacent crests of the corrugations to extend along a longitudinal portion thereof allow air flow passage therethrough in one direction while preventing air flow in the other direction.

REFERENCES:
patent: 2675823 (1954-04-01), Langdon
patent: 3490488 (1970-01-01), Grist
patent: 3930096 (1975-12-01), Gilpatrick
patent: 5000216 (1991-03-01), Smith
patent: 5492505 (1996-02-01), Bell et al.

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