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. 26, 1991
Filed:
Oct. 09, 1990
Donald D Johannesen, South Bend, IN (US);
Allied Signal Inc., Morristown, NJ (US);
Abstract
An automatically adjustable strut (60) is mounted adjacent a drum brake (10) wheel cylinder (20) and strut forks (62, 66) bear against a pair of brake shoes (12, 14) and a parking brake lever (50). The strut (60) extends automatically according to wear of the brake shoes (12, 14) and comprises a nut-and-bolt system operated by a pawl (75) engaging teeth (84) of a nut (80). The pawl (75) is part of a clip-on automatic adjuster strut lever (100) mounted resiliently upon a body (68) of the strut (60). The strut lever (100) includes a loading arm (108) which resiliently engages the body (68) of the strut (60), so that proper operational loading is effected by the pawl (75) upon the nut (80). The strut lever (100) also includes a spring lever arm (120) which engages a rocker lever (90) that moves the lever arm (120) and pawl ( 75) when the brake (10) is released toward an at-rest position, and then permits movement of the pawl (75) in an opposite direction when the brake (10) is applied. The strut lever (100) is mounted slidably onto the body (68) of the strut (60) by way of a base member (104) having an opening (106) whose circumference has a portion (113) received within a groove (65) in the body (68) of the strut (60).