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:
Feb. 11, 1997
Filed:
Oct. 20, 1994
Joachim Horsch, Lombard, IL (US);
Case Corporation, Racine, WI (US);
Abstract
A hydraulically actuated brake assembly capable of rendering both a service brake function and a park brake function to a rotatable shaft that passes through a stationary housing. The brake assembly includes a series of wetted rotatable and nonrotatable brake members arranged in a stacked and intermixed relation within the housing and arranged coaxially about the shaft. The brake assembly further includes a service brake piston and a park brake piston for individually or conjointly applying a compressive force against the brake members thereby providing a braking action to the shaft and a park brake piston. The pistons are preferably arranged in axial alignment with each other and coaxially about the shaft. The service brake piston responds to fluid pressure being introduced into, a first fluid receiving cavity. The park brake piston is spring applied and is responsive to the fluid pressure introduced into a second fluid receiving cavity. The brake assembly further includes a brake release mechanism for normally urging the service brake piston into a released position wherein the piston is disposed a fixed distance from the brake members. The brake release mechanism is specifically structured and designed to maintain a fixed clearance between the brake piston and the brake members when the brake piston is in its released position and self-compensates for wear on the braking surfaces of the brake members.