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:
Jul. 31, 1984
Filed:
Aug. 30, 1982
Applicant:
Inventor:
Bruce D Lockhart, Rochester, MI (US);
Assignee:
General Motors Corporation, Detroit, MI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F02D / ; F02D / ;
U.S. Cl.
CPC ...
123336 ; 123361 ; 123442 ;
Abstract
Engine air flow is controlled by principal and supplementary throttles--the principal throttle being positioned by a stepper motor but also having a mechanical linkage to assure at least partial throttle opening when required, and the supplementary throttle being positioned by a mechanical linkage to permit primary control of engine output by the principal throttle while assuring that engine output is minimized when required.