Valve deactivation with an electro-hydraulic actuator
CA 2436282 A1 · Owner: Rasnick, Michael L. · Inventors: Rasnick, Michael L.; Keller, Robert D.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An electro-hydraulic actuator assembly having a plurality of hydraulic pressure operated pistons controlled by a single solenoid operated shut-off and, vent valve. Eaton hydraulic piston has an exteriorly extending arm attached thereto for contacting a release latch on the engine valve gear for disablement or, deactivation of the valves in selected engine combustion chambers. The actuator assembly is disposed with the shut-off and vent valve vent port vertically, above the hydraulic piston bores; and a bleed orifice is provided for bleed flow, from the hydraulic piston bores to the valuing chamber in the shut-off and vent, valve for permitting bleed flow and air purge. Gravity flow …
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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 July 29, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 29, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 29, 2025.
- 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.