Mixing valve with a collared ball valve
CA 2129228 C · Owner: Masco Corporation · Inventors: Tang, Tage
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A mixing valve for a faucet has a ball valve (16) mounted for pivotable motion about a longitudinal axis (76) and a second perpendicular axis (86) that is fixed with respect to the pin (84) that extends through the spherical section (42) of the ball valve (16). Distal ends of the pin are connected to a collar (46) that is fitted about the spherical section (42). The collar has cam stops that abut an edge (102) of upturned flange (104) of a seating ring (48). The spherical section (42) has inlet openings (90, 94) that are configured with convex and concave sections to produce a desired flow pattern.
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
- Filed September 22, 1992 and granted July 14, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 22, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 22, 2014.
- 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.