Clutch control
CA 2125514 C · Owner: Ward, Harold R. · Inventors: Ward, Harold R.; Woods, Jerry D.; Williams, Roger A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A master clutch control system/method for controlling engagement and disengagement of a vehicular master clutch preferably a multiple disc, wet clutch (14) is provided. Below a reference vehicle speed (OS < REFos) and/or a reference engine speed (ES < REFEs) the clutch is automatically, controlled as a function of throttle displacement (THL) while above the reference vehicle speed (OS > REFos) and/or reference engine speed (ES > REFEs) the clutch is controlled as a function of the position of a manual engage/disengage switch (50) biased to the engage selection position thereof.
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 June 9, 1994 and granted June 8, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 9, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 9, 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.