Control valve for use in a dual handled hot/cold water mixing faucet
CA 2192763 C · Owner: Chung Cheng Faucet Co. Ltd. · Inventors: Ko, Hsi-Chia
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An improved control valve for use in a mixing valve has a valve mount, a spindle assembly and a water restraining plate having two outlets. The spindle assembly has a spindle rod and a two staged valve body having a chamber at the lower portion thereof. In the chamber are there a plurality of cylindrical posts including 4 long, posts and other short posts that are arranged in order. The cylindrical posts are used to reduce the noise of turbulent flow passing through the valve body and the 4 long posts support the water restraining plate in place and stop a spring biased sealing pad from dropping into chamber via the outlets. Thus, the spindle rod of the spindle assembly can be rotated more …
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 December 12, 1996 and granted June 1, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 12, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 12, 2018.
- 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.