Mixing valve with a ball control mechanism
CA 2000379 C · Owner: Grassberger, Roland · Inventors: Grassberger, Roland
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A mixing valve with a movable spherical valve element (14) with a guide mechanism which allows for rotation of the spherical valve element about its center along two different directions. The valve element (14) is provided with an opening (17) that cooperates together with inlet openings (10), (11), (12) and (13) for hot and cold water which are equipped with tubular seals (8) made from elastomeric material. The valve element (14) also has an outlet opening (16) for the mixed water located in a partially spherical seat in the fixed part of the faucet to control the proportion of the mixing between the hot and cold water and the flow of the mixed water. There are at least two openings (10, …
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 October 10, 1989 and granted September 13, 1994. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 10, 2009.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 10, 2011.
- 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.