Electrohydraulic control device for a drive train of a vehicle
CA 2072079 A1 · Owner: Mckenzie, Philip C. · Inventors: Mckenzie, Philip C.; Bump, David W.; Marcott, Tony L.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
57-, Abstract of the Disclosure, An Electrohydraulic Control Device for a Drive Train of a Vehicle, A vehicle (12) such as an earthmoving wheel loader has an engine (14), a torque converter (20) having an impeller element (22), a reactor element (24) and a turbine element (28), and an input clutch (64) connected between the engine (14) and the impeller element (22). An electrohydraulic control device (76) is provided to controllably engage the input clutch (64) and that includes a, microprocessor-based electronic control module (78) an actuator mechanism (120) having a control member (122) that is progressively movable between first second and third positions to deliver a first electrical …
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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 January 14, 1991. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended January 14, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 14, 2013.
- 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.