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:
Apr. 23, 2002
Filed:
Jul. 27, 2001
James E. Doolittle, Granger, IN (US);
Robert Bosch Corporation, Broadview, IL (US);
Abstract
A drum brake assembly ( ) having first ( ) and second ( ) brake shoes retained on a backing plate ( ). Each of the first ( ) and second ( ) brake shoes have an end ( ) aligned on a hydraulic actuator assembly ( ) and an end ( ) aligned on an anchor block ( ). An adjustable strut mechanism ( ) has a extendable shaft ( ) that includes a first end member ( ) that engages the first end ( ) of said first brake shoe ( ), a second end member ( ) that engages the first end ( ) of the second brake shoe ( ) and a rotatable stem ( ). A first resilient member ( ) urges the first ( ) and second ( ) brake shoes toward the hydraulic actuator assembly ( ) and second resilient member ( ) urges the first ( ) and second ( ) brake shoes toward the anchor block ( ). The length of the extendable shaft ( ) is adjusted by ratcheting a pawl ( ) rotating the stem ( ) to establish a predetermined running clearance between the first ( ) and second ( ) friction members and drum ( ).