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:
Jun. 15, 1993
Filed:
Jun. 24, 1991
Ralph J Unterborn, Dayton, OH (US);
General Motors Corporation, Detroit, MI (US);
Abstract
A vehicle brake having an electrically powered actuator and a parking brake is provided which, in a preferred embodiment, includes an electric motor with a rotor torsionally associated with the actuator for applying brake shoes, springs for returning the brake shoes to a released position, a first friction plate torsionally associated with the rotor, a second friction plate for selective mating with the first friction plate, torsionally fixed with respect to the rotor, a parking brake actuator, a parking brake shaft powered for rotation by the parking brake actuator, and a cam associated with at least one of the friction plates and the parking brake shaft whereby rotation of the parking shaft translates into relative motion between the friction plates to position the friction plates together to lock or release the vehicle brake.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile