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:
Mar. 19, 1991
Filed:
Aug. 24, 1989
Applicant:
Inventor:
Frank W Brooks, Sr, Dayton, OH (US);
Assignee:
General Motors Corporation, Detroit, MI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16D / ;
U.S. Cl.
CPC ...
188 7956 ; 1881 / ; 7457 / ;
Abstract
In a preferred embodiment a self-adjusting vehicle wheel drum brake is provided having an adjuster strut with a threadably extending star wheel and an adjuster pawl mechanism having a dual step tip. The dual step tip allows the adjuster mechanism to move the adjuster pawl in small incremental steps, thereby lowering in half or in close approximate thereto, the amount of wear required upon a pair of brake shoes before the adjuster pawl will effectuate outward movement of the brake shoes.