Check valve
CA 1286196 C · Owner: Scaramucci, John Philip · Inventors: Scaramucci, John Philip
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A swing check valve wherein the valve seat disc and, hanger for the disc are in the form of a replaceable cartridge which can be conveniently inserted in and removed from the valve chamber through one end of the valve body. The hanger is sized such that the hinge pin of the disc can move a limited distance in the hanger toward and away from the valve seat to provide a floating disc. A projection is formed on the disc positioned to engage the valve seat when the disc extends at about 90° from the seat. The seal ring in the valve seat is sized to completely fill its receiving groove and the face of the valve seat is recessed at one side of the groove for distortion of the material of the seal …
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 July 16, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 16, 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.