System for detecting sliding of a wheel travelling along a track
CA 2442631 C · Owner: Jrb Engineering Pty Ltd · Inventors: Blair, Jim
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A system 10 for detecting sliding of a wheel 12 on a rail 14 includes a roller 16 disposed, adjacent the rail 14 so that a wheel 12 travelling along the rail 14 can engage the roller, 16, and a tachometer 18 coupled with the roller 16 for providing a rotation signal, representative of the degree of rotation of the roller. The system 10 includes a computer, 20 which receives the rotation signal from the tachometer 18 and by using an appropriate rotation algorithm calculates the degree of rotation of the roller 16. The, computer 20 then compares the degree of rotation with a predetermined range of roller, rotations and, if the calculated degree of rotation of the roller is less than …
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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 September 25, 2003 and granted April 17, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 25, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 25, 2025.
- 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.