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:
Aug. 09, 1988
Filed:
May. 29, 1987
Douglas M Copp, West Milton, OH (US);
General Motors Corporation, Detroit, MI (US);
Abstract
A single generally U-shaped wire spring has a partial loop formed in the center and fitting over an anchor for a leading-trailing shoe assembly. Each arm of the spring extends along the web of a shoe and terminates in a hook end which fits within a slot in the associated shoe web. The slots are so located in the web to obtain the desired distribution of spring loads on the adjuster/strut assembly and on the anchor plate. The spring will return the brake shoes to the adjuster/strut assembly after actuation of the wheel cylinder during service brake function; retain the lower ends of the shoes against the anchor plate; and hold the shoes against the backing plate by the force component of the spring wire acting against the bottom side of the cable support and against the top of the outer ramp of the anchor plate, resulting in a spring load directed onto the web of each shoe.