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:
Nov. 14, 1978
Filed:
Nov. 10, 1977
Michael P Elward, Wilkes-Barre, PA (US);
William K Mong, N. Huntingdon, PA (US);
Westinghouse Air Brake Company, Wilmerding, PA (US);
Abstract
This invention relates to a vented ball-type cock such as is used at each end of the brake pipe on a railway vehicle in which the brake pipe hose connected to the cock outlet is vented to atmosphere in the cock closed position via a passageway extending through the cock body, the cover therefor and a spiral groove of some suitable configuration formed on a cylindrical stem extending through the cover for rotating a ball-type valve within the cock body between an open and a closed position. A resilient seal obliquely mounted on the stem for rotation therewith is shifted thereby, relative to the cover, from the cock closed position in which a communication between the inlet and outlet of the cock is closed and the hose-venting passageway is open, to the open position in which the communication between the inlet and outlet of the cock is open and the hose-venting passageway is closed.