Improved differential including friction pack clutch means
CA 2214962 C · Owner: Valente, Paul J. · Inventors: Valente, Paul J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A locking differential includes annular friction pack clutch assemblies for normally connecting the drive shaft of a vehicle to a pair of axially aligned driven axle shafts. A pair of clutch members are biased apart by a plurality of spring assemblies exch including a locking pin colinearly arranged relative to a helical spring. At one end the, locking pin is slidably mounted in a corresponding pin bore contained in one face of a first clutch member, the other end of the locking pin extending within an oversized spring bore contained in the opposing face of a second clutch member The helical spring is mounted in the bottom of the oversized bore and is compressed by the pin when the pin is …
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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 September 22, 1997 and granted September 17, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 22, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 22, 2019.
- 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.