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:
Jun. 02, 1981
Filed:
Jan. 16, 1980
Applicant:
Inventors:
James L Coulter, Fraser, MI (US);
Harald H Lorenz, Orchard Lake, MI (US);
Assignee:
General Motors Corporation, Detroit, MI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16D / ;
U.S. Cl.
CPC ...
188 / ; 1881 / ;
Abstract
A duo servo drum brake has an adjusting lever pivoted on the secondary brake shoe and engaging the star wheel of an adjusting screw acting between adjacent ends of the primary and secondary brake shoes. An adjusting rod for operating the adjusting lever during forward braking actuation is pivotally connected to the secondary shoe rim near the adjusting lever, and the pivotal connection is infinitely adjusted for brake wear.