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:
Aug. 20, 1985
Filed:
Dec. 23, 1983
Dario Barberis, Turin, IT;
WABCO Westinghouse Compagnia Freni S.p.A., Turin, IT;
Abstract
A braking apparatus and method are taught that allows the vehicle having the apparatus to resume operation when the magnitude of an electrical signal to an electro-fluidic portion of the apparatus is less than a minimum predetermined value. The system uses electro-fluidic braking equipment to supply pressurized fluid in response to an electrical signal and fluid pressure controlled braking equipment to supply pressurized fluid in response to pressure differentials. An automatic selector value (ASV) normally receives pressurized fluid from the electro-fluidic equipment. When a minimum predetermined value electrical signal is not present, however, the ASV receives pressurized fluid from the fluid pressure controlled braking equipment. The system incorporates a release device to isolate the electro-fluidic braking equipment from the ASV when the electrical signal is less than the minimum predetermined value. Thereafter, the equipment may resume operation.