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:
Sep. 05, 1978
Filed:
Apr. 08, 1977
Applicant:
Inventors:
Earl R Fischer, Rochester, NY (US);
John A Gural, Pittsford, NY (US);
Assignee:
General Motors Corporation, Detroit, MI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F15B / ; F01B / ;
U.S. Cl.
CPC ...
91173 ; 9118 / ; 91422 ; 92 94 ; 92100 ;
Abstract
A vacuum motor suitable for actuating a carburetor choke valve has primary and secondary stages responsive to separate vacuum signals. The secondary stage is carried by the primary stage and has a valve which opens upon full retraction of the primary stage to permit application of a vacuum signal to the secondary stage.