Engine overspeed sensing and readout
CA 2001190 C · Owner: Irick, W. Thomas · Inventors: Dowler, Robert L.; Irick, W. Thomas; Malecki, Richard L.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A system for alerting the operator of a vehicle to potentially damaging motoring of the engine before such motoring actually occurs so that corrective action can be taken. A speed sensor senses rotational speed of the counter/input shaft of a manual transmission and operates an indicator that presents the alert to the driver. The alert is given with the clutch disengaged as soon as the transmission is placed in a gear that causes the counter/input shaft to operate at a speed that will cause potentially damaging motoring of the engine. Because the alert is given before the clutch is re-engaged an, opportunity is given to prevent the potentially damaging motoring.
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 23, 1989 and granted July 20, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 23, 2009.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 23, 2011.
- 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.