Vacuum actuated door

Details Vacuum actuated door Vacuum actuated door

1995-01-25

1996-06-04

Joyce, Harold

Ventilation

Vehicle

251 611, 454139, B60H 124

Patent

active

055227660

ABSTRACT:
A ventilation control door is integrated with a reservoir chamber. The air pressure within the reservoir chamber controls the position of the door to regulate ventilation. As the volume of the reservoir diminishes the door moves in a preferred direction. A restoring spring within the reservoir returns the door to a nominal position.

REFERENCES:
patent: 4555945 (1985-12-01), Hanson
patent: 4614152 (1986-09-01), Fukasaku et al.
patent: 4765675 (1988-08-01), Svensson
patent: 4903854 (1990-02-01), Schiemann
Dupont's Hytrel, the Automotive Flexdamper, developed by Enerzone Automotive, Dallas, Texas; Design Guidelines for Automotive Flexvalves, pp. 1-13.

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