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:
Feb. 02, 1982
Filed:
Nov. 30, 1979
Applicant:
Inventors:
Richard N Lehnhoff, Kettering, OH (US);
William C Staker, Springfield, OH (US);
Assignee:
General Motors Corporation, Detroit, MI (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F01P / ;
U.S. Cl.
CPC ...
123 4112 ; 123 4149 ; 623233 ; 318471 ;
Abstract
The electric drive motor of an internal combustion engine radiator cooling fan that is arranged to be energized by the output potential of a dynamoelectric generator driven by the engine is supplied with operating potential in such a manner that the average supplied drive motor power is directly proportional to engine speed while engine temperature is within the range between a predetermined first temperature and a predetermined higher second temperature and the engine is operating within a selected speed range.