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. 24, 1987
Filed:
Jun. 20, 1985
Billy M Lewis, Joplin, MO (US);
Walter I Myers, Tulsa, OK (US);
Wiseda Ltd., Cardin, OK (US);
Abstract
A parking brake assembly for large off-highway vehicles and comprising a housing adapted to be installed around the rotatable drive shaft of a wheel motor, a plurality of clutch plates disposed within the housing and engaged with the drive shaft for rotation or non-rotation simultaneously therewith, a piston assembly reciprocally disposed within the housing and having a normal position of pressure engagement with the clutch plate whereby the brake assembly is normally in a braking engagement with the drive shaft, an annular chamber is provided in the housing and in communication with the piston for receiving a pressure fluid therein and exhausting the pressure fluid therefrom, the application of a pressure fluid into the chamber causing the piston to move into a non-braking pressure position with respect to the clutch plates and the release of fluid pressure from the chamber permitting the piston to return to the braking pressure engagement with the clutch plates.