U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Piston having a cap and a brake caliper for use therewith

Patent 6729445 Issued on May 4, 2004. Estimated Expiration Date: Icon_subject January 22, 2023. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Patent References

3502004

Structurally strong heat insulator for high transient temperatures
Patent #: 4147241
Issued on: 04/03/1979
Inventor: Preniczny ,   et al.

Hydraulically actuated sliding-caliper disc brake
Patent #: 4798270
Issued on: 01/17/1989
Inventor: Schneider ,   et al.

Caliper pistons with improved heat isolation Patent #: 6446767
Issued on: 09/10/2002
Inventor: Gonzalez, et al.

Inventors

Assignee

Application

No. 10347697 filed on 01/22/2003

US Classes:

188/264GInsulators

Examiners

Primary: Schwartz, Christopher P.

Attorney, Agent or Firm

International Class

F16D 65847

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.

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