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. 03, 2014
Filed:
Nov. 30, 2011
Applicant:
Weiming Liu, Novi, MI (US);
Inventor:
Weiming Liu, Novi, MI (US);
Assignee:
Federal-Mogul Products, Inc., Southfield, MI (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
F16D 65/08 (2006.01); F16D 51/20 (2006.01);
U.S. Cl.
CPC ...
Abstract
An improved drum brake assembly for reducing braking vibrations and noise. The improved assembly includes a pair of shoes, each extending through an arc and presenting an outer shoe surface. A pair of brake linings of a friction material are coupled to the outer shoe surface. Each of the brake linings has an upper surface and a pair of oppositely facing chamfered edges. Each chamfered edge has an arc length of no less than one inch and is disposed at an angle of between ten and twenty-five degrees from the tangent of the upper surface where it meets the chamfered edge.