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. 29, 1976
Filed:
Aug. 13, 1975
Eugene Douglas McEathron, Watertown, NY (US);
General Signal Corporation, Rochester, NY (US);
Abstract
A fluid brake control system is disclosed having a brake application and release control device for governing fluid pressure in a brake cylinder. The control device comprises a housing containing a differential abutment subject to actuation from a normal position by differences in pressure between respective brake pipe and reference fluid pressure chambers on opposite sides of the abutment. At least one poppet type valve is provided in the housing on each side of the abutment, that is spring biased in the direction of the abutment to a closed position, having an operating push rod axially disposed between the associated poppet valve and the abutment. The poppet valve on one side of the abutment is opened by movement of the abutment in one direction from its normal position to permit charging of the brake cylinder pipe and the poppet valve on the other side of the abutment is opened by movement of the abutment in the opposite direction from its normal position to permit fluid to be released from the brake cylinder pipe.