Automotive ventilation housing with self supporting film valve h

Ventilation – Vehicle – Condensation preventer

Patent

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Details

137351, 251145, B60S 154

Patent

active

058851526

ABSTRACT:
A film valve designed to replace a semi cylindrical, solid rotary valve, which rolls the film against or away from the perimeter seal of an HVAC outlet opening without relative rubbing. Spring biased take up rollers journaled on V shaped, resilient wire support legs keep a film sheet biased against interleaved, arcuate support fingers to hold the film in the necessary curved shape. The curved film sheet rolls up or winds out from the rollers as the legs are pushed toward one another, or allowed to swing away from one another. The film rolls down onto or up and off of the foam seal surrounding the outlet opening without relative rubbing.

REFERENCES:
patent: 4084616 (1978-04-01), Tragert
patent: 5009392 (1991-04-01), Ostrand
patent: 5105730 (1992-04-01), Smith

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