Method of detecting a deflated tyre on a vehicle
CA 1287901 C · Owner: Holmes, Thomas · Inventors: Holmes, Thomas; Walker, John Charles
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method is disclosed of detecting a partially deflated tire on a four wheeled vehicle. The angular velocity of each wheel is sensed. The four signals are fed into a processor unit. The unit subtracts some of the signals from one pair of diagonally opposite wheels from the sum of the signals from the other pair of diagonally opposite wheels. The processor senses when the magnitude of the result is between 0.05%and 0.60% of the mean of the two sums. It compares the signals for each of the four wheels in turn with the signals for each of the other wheels senses when one of said signals is different to the average of all four signals by more than 0.1% and in the event of both sensed signal …
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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
- Granted August 20, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 20, 2008.
- 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.