Flow rate and temperature limiting mechanism for a mixing valve
CA 2120605 C · Owner: Knapp, Alfons · Inventors: Knapp, Alfons
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A mixing valve (10) has a limiting mechanism (26) for controlling the maximum flow rate and maximum temperature mix for the mixed water. The limiting mechanism (26) includes a rotatable plate member (70) retained on a cap assembly (56) by a positioning ring member (82). The plate member (70) has a slot (74) that receives a control stem (22) of valve element (20). A handle (92) has a leg section (96) that fits onto control stem (22) and has a cross-sectional shape that prevents the handle from rotating about the control stem axis. The positioning ring (82) limits the rotation of the plate member (70) to define a maximum temperature mix of the discharged water through outlet port (30) of 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 July 17, 1992 and granted March 23, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 17, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 17, 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.