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:
Nov. 17, 1981
Filed:
Mar. 31, 1980
Applicant:
Inventors:
Melvin H Hallmann, Middletown, IN (US);
Burr E Stephens, Anderson, IN (US);
Assignee:
General Motors Corporation, Detroit, MI (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16H / ;
U.S. Cl.
CPC ...
474110 ; 474138 ;
Abstract
A belt tension controlling mechanism has a spring member which operates on a pulley support bracket to establish a tension in a belt trained on the pulley. The spring member surrounds a threaded sleeve which is rotated by a pair of selectively operable one-way ratcheting clutches which are simultaneously driven in opposite directions by a vacuum motor. The rotation of the sleeve results in linear meovement of a shaft connected to the pulley support bracket to thereby increase or decrease the belt tension, depending upon which clutch is operable.