Valve for flowing liquid-phase medium
CA 2106963 C · Owner: Covent As · Inventors: Tengesdal, Paul
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A valve for a pipe, system wherein liquid circulates is intended to be controlled, dependent on the liquid temperature within the system by, means of a thermostat adapted to actuate an electro, magnet which on its part, dependent on whether it is current-carrying or not. is adapted to retain the valve spindle (2) in, a position corresponding to open or closed valve position, respectively. The valve housing (1) has a plate-shaped seat, body (5) having a large central through-going flow opening, (6) and a number of smaller corresponding openings (7), closer to the circumference. A spring-loaded (12) first valve, body (10) is displaceably arranged on the spindle (2) and, cooperates with the …
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 March 27, 1992 and granted June 30, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 27, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 27, 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.