Thermostatically controlled mixing valve
CA 2222403 C · Owner: Masco Corporation Of Indiana · Inventors: Knapp, Alfons
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A retaining device for frictionally retaining two mobile parts of a thermostatically controlled mixing valve. The first part (2) of the mixing valve contains a cavity having a side wall (40) a top wall (41) and a bottom , wall (42). An O-ring type packing washer (9) is disposed in the cavity and frictionally grips a surface of the second mobile part (13). The axial distance between top wall (41) and bottom wall (42) of the cavity is less than the cross-sectional diameter in the axial direction of the ring-shaped packing washer (9). The packing washer (9) is thus compressed axially and establishes a frictional hold between the top wall (41) and bottom wall (42) of the cavity and the …
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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 March 26, 1997 and granted August 14, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 26, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 26, 2019.
- 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.