Self-contained hydraulic coupling
CA 2307225 A1 · Owner: Burns, Timothy M. · Inventors: Burns, Timothy M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A hydraulic coupling (10) for use in motor vehicle driveline applications to limit speed differentiation and transfer drive torque between two rotary members. The hydraulic coupling includes a multi-plate clutch assembly (22) operably connecting the two relatively rotatable members and a sealed , actuator assembly (20) for actuating the clutch assembly (22) in response to the magnitude of speed differentiation between the two rotary members. The actuator assembly (20) includes a hydraulic pump (24) and a piston (70) which are sealed relative to the clutch assembly (22). The sealed actuator assembly (20) includes an internal recirculation path for supplying hydraulic fluid retained …
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 October 27, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 27, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 27, 2020.
- 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.