Method and apparatus for tyre pressure determination
CA 2289532 A1 · Owner: Stollery, David · Inventors: Stollery, David; Jones, Barbara Lynn; Smith, Paul
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Method and apparatus for tyre pressure determination for example off-vehicle , during inflation on a tyre changer is based upon impact vibrational input and corresponding waveform generation by a piezoelectric cable transducer. Analysis of the waveform output on a frequency or time-base shift with respect to pressure provides a basis for numerical pressure determination based on identification of dominant peaks. Repeated constant level impacts by a solenoid-operated hammer device during inflation enables monitoring of the dominant peak and thus inflation pressure.
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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 May 15, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 15, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 15, 2020.
- 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.