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:
Jul. 08, 2003
Filed:
Oct. 11, 2001
Applicant:
Inventor:
Steven M. Stojic, Holland, MI (US);
Assignee:
Haldex Brake Corporation, Kansas City, MO (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F15B 2/102 ;
U.S. Cl.
CPC ...
F15B 2/102 ;
Abstract
A sealed air-operated brake actuator comprising a brake actuator divided into a spring chamber and a pressure chamber. An extra-large force compression spring is contained in the spring chamber. The spring chamber is fluidly exhausted through a one-way valve located in the end of an actuator rod extending out of the brake actuator. The large force compression spring overcomes any vacuum or pressure that might form within the spring chamber upon the release of the parking brake and the one-way valve relieves any pressure buildup in the spring chamber upon the release of the parking brake.