Clutch assembly with automatic oil level control system
CA 2132605 C · Owner: Walker, Michael D. · Inventors: Bell, Douglas W.; Walker, Michael D.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A clutch assembly for a vehicle with selective front wheel drive includes an automatic oil level control system. The clutch assembly includes a housing which encloses a hydraulic clutch. The hydraulic clutch, when engaged connects a front wheel drive shaft to a main vehicle drive shaft. Since the hydraulic clutch has a tendency to leak fluid into the housing the fluid level within the housing is controlled by pressurizing the housing via compressed air from a turbocharger or the like. A pair of blow back tubes extend into the housing from opposite sides of the housing, and are interconnected and then connected to an unpressurized reservoir, such as the crankcase or transmission case via an …
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 September 21, 1994 and granted May 11, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 21, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 21, 2016.
- 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.