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:
May. 04, 2004
Filed:
Jan. 22, 2003
Applicant:
Inventors:
Wenqi Qian, Fort Mill, SC (US);
Grafton Robertson, Gaffney, SC (US);
Assignee:
Performance Friction Corporation, Clover, SC (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16D 6/5847 ;
U.S. Cl.
CPC ...
F16D 6/5847 ;
Abstract
A brake caliper has a piston retained in a bore that abuts a brake pad for moving the brake pad into selective engagement with a rotor to effect braking. The piston has a composite cap that is formed of a cap piece made of strong material, such as steel, and an insulator, made of polyimide resin material, for example. The insulator is preferably in the form of a ring clamped between the cap piece and the piston to create a thermal break and minimize heat transfer from the brake pad to the piston and caliper assembly.