Caliper pistons with improved heat isolation

Patent 6446767 Issued on September 10, 2002. Estimated Expiration Date:

August 29, 2021. 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.

Abstract Claims Description Full Text

Patent References

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Inventors

Application

No. 941336 filed on 08/29/2001

US Classes:

188/71.6, With means for cooling brake188/72.4By fluid pressure piston

Examiners

Primary: Lavinder, Jack
Assistant: Kramer, Devon

International Class

F16D 055/02

Abstract

A piston structure for use in a brake caliper has a cylindrical base portion having an annular receiving recess and a base mounted spring received therein. A cylindrical brake pad engaging portion has an annular recess formed within its length. A recess is formed within the length of the base portion with an elastomeric o-ring positioned within the recess. A thin layer of metallic material is integrally formed with the remainder of the piston. The thin layer of metallic material is adapted to engage the surface of an adjacent brake pad.