Transmissions of the toroidal-race rolling-traction type
CA 2086538 C · Owner: Fellows, Thomas George · Inventors: Fellows, Thomas George
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A ratio-varying component for a transmission of the toroidal-race rollingtraction type, in which each of the rollers (1) transmitting torque between an input disc (51 Fig. 3) and a corresponding , output disc (40) is positioned hydraulically by means of an attached hydraulic piston (5) and cylinder (6) combination in which all , the cylinders lie to the same side of a common plane (43a) including the axis (43) of the discs. The cylinders may be supported on a common block-like structure (41) in which, hydraulic conduits (31a, 32a 37a, 44) may be contained.
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 July 12, 1991 and granted October 2, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 12, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 12, 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.