Pushbutton controlled valve
CA 2312497 C · Owner: Wang, Tzu-Meng · Inventors: Wang, Tzu-Meng
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A valve has a pushbutton assembly and a piston assembly. The valve has a chamber defined to receive therein the piston assembly and the pushbutton assembly. The piston assembly is controlled by the pushbutton assembly to activate the communication between the chamber in the body of the valve and the inlet of the body. The pushbutton assembly has a pushbutton movably received in the body to control an engagement of a piston of the piston assembly to the chamber so as that the water flow out of the outlet is controlled by the movement of the pushbutton. Fig.2
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 June 26, 2000 and granted July 22, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 26, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 26, 2022.
- 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.