Vented ball-type cut-out cock
CA 1087589 A · Owner: Westinghouse Air Brake Company · Inventors: Mong, William K.; Elward, Michael P.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
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 notation therewith is shifted thereby relative to, the cover, from the cock closed position in which a communication between the inlet and outlet of the …
Read the whole patent
Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Granted October 14, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 14, 1997.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.