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. 06, 2014
Filed:
Sep. 28, 2011
Brett S. Darner, Wellington, OH (US);
Ronald S. Plantan, Mooresville, NC (US);
Mark J. Kromer, Huron, OH (US);
Randy J. Salvatora, North Olmsted, OH (US);
Brett S. Darner, Wellington, OH (US);
Ronald S. Plantan, Mooresville, NC (US);
Mark J. Kromer, Huron, OH (US);
Randy J. Salvatora, North Olmsted, OH (US);
Bendix Spicer Foundation Brake, LLC, Elyria, OH (US);
Abstract
A spring-type brake actuator for a pneumatically-operated vehicle brake is provided, in which the portion of the brake actuator containing the parking brake actuation power spring is arranged to be vented to atmosphere but not to permit entry of outside environmental air into the power spring chamber, the spring-type brake actuator being provided with an internal breather valve which permits clean dry air from the parking brake release chamber to enter the power spring chamber which the pressure difference between the chambers falls to within a predetermined pressure range.