Check valve hanger mechanism
CA 1280050 C · Owner: Wheatley Pump And Valve, Inc. · Inventors: Strelow, John L.; Clarkson, Robert I.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention disclosed herein relates to a check valve clapper hanger mechanism from which a check valve clapper may be rotatably suspended in a check valve housing. The check valve clapper hanger mechanism is easily removable from the check valve housing and is capable of maintaining proper alignment of the clapper during normal operation of the check valve.
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 February 12, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 12, 2008.
- 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.