Solenoid actuated valve assembly
CA 2018239 C · Owner: General Motors Corporation · Inventors: Weinand, Louis H.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An injector has a solenoid armature that displaces a valve from its seat to deliver a charge of fuel and air directly into the combustion chamber of a two-stroke cycle internal combustion engine. When a valve return spring closes the valve against its seat to terminate delivery of the fuel-air charge, the armature separates from the valve stem, and the kinetic energy of the armature is dissipated by a resilient disk or ring. An adjustment is accessible at the end of the valve stem to establish the valve closing force of the return spring, an adjusting screw establishes the distance between the open and closed positions of the valve and, another adjusting screw positions the resilient disk.
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 5, 1990 and granted October 18, 1994. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 5, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 5, 2012.
- 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.