Coupler with automatic shut-off
CA 1052410 A · Owner: Shames, Harold · Inventors: Shames, Sidney J.; Shames, Harold; Logan, John F.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A quick connection coupler for securement to a complementary nipple is produced principally of plastic parts by using molded slide-type cam jaws in a molded tubular body for gripping the nipple, and by using a molded downstream seal retainer telescoped into the coupler body for supporting a downstream packing that is to effect a seal with the downstream end of the nipple. The seal retainer preferably provides a valve thereon that operates automatically to close and prevent back flow through the coupler when the coupler is separated from the nipple and to, be opened for flow therepast upon connection of the coupler to the nipple.
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 April 10, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 10, 1996.
- 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.