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:
Jan. 14, 2003
Filed:
Sep. 14, 2000
Anwar R. Daudi, Ann Arbor, MI (US);
Weston E. Dickerson, Milford, MI (US);
Chris Milosavlevski, Livonia, MI (US);
Rob Walkowiak, Clinton Township, MI (US);
Hayes Lemmerz International, Inc., Northville, MI (US);
Abstract
The invention relates to a brake rotor having improved damping characteristics and a method for producing the same. A surface of the brake rotor is EDG machined, also known as EDM machined, for improving the damping characteristics of the rotor. The decay rate of the brake rotor is increased and the Q factor of the brake rotor is reduced. The portion of the brake rotor which is EDG machined is formed of an electrically conductive material, preferably a ferrous material, more preferably a cast iron material, a gray iron material or a damped iron material. The brake rotor may include a solid friction section or a ventilated friction section. The brake rotor is preferably cast from a single material, although alternatively, it may be a composite rotor formed of more than one material.