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:
Dec. 28, 1999
Filed:
Sep. 03, 1997
Applicant:
Inventors:
William C Pierce, Muskegon, MI (US);
William J Hicks, Muskegon, MI (US);
Steven M Stojic, Holland, MI (US);
Assignee:
Neway Anchorlok International, Inc., Muskegon, MI (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F01B / ;
U.S. Cl.
CPC ...
92 63 ; 9213 / ;
Abstract
A fluid-operated brake actuator having a housing with one or more vent openings in communication with an interior chamber is provided with a filter assembly mounted to the housing over the vent openings. The filter assembly includes a gas permeable filter element, with oleophobic and homophobic characteristics so that air entering the service brake inner chamber from the atmosphere will be substantially free of contaminants