The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 23, 1999
Filed:
Apr. 20, 1998
Applicant:
Inventor:
Kenneth Lawrence Wardlaw, Southfield, MI (US);
Assignee:
General Motors Corporation, Detroit, MI (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B60S / ;
U.S. Cl.
CPC ...
454121 ; 137351 ; 251145 ;
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.