Valve
CA 2111986 C · Owner: Phillips, Ronald · Inventors: Phillips, Ronald; Cross, Robert Keith; Panesar, Lukhbir Singh
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A fluid control valve includes a valve member movable into engagement with a seating to prevent flow of fluid through the valve. An actuating member is biased in one direction by a return spring and is moved against the action of the return spring by the armature of an actuator when the winding thereof is energised. The movement of the actuating element is transmitted to the valve member through an under travel spring which yields to allow continued movement of the actuating member when the valve member engages the seating.
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 10, 1992 and granted May 29, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 10, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 10, 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.