Wayside monitoring of the angle-of-attack of railway vehicle wheelsets
CA 2102140 C · Owner: Wayside Inspection Devices Inc. · Inventors: Izbinsky, Grigory; D'Aoust, Denis
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
System for monitoring the angle-of-attack of the wheelsets of a railway vehicle moving along a track section. The apparatus includes a rangefinder to repeatedly measure at known intervals the instanteous distance between a reference point and successive registering points on a face plate surface of a wheel of a passing wheelset. A detector generates a signal representative of the velocity of the wheel passing along the reference point. A computer receives the output signals generated by the velocity sensor and of the rangefinder to compute the angle-of-attack of each wheelset.
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 November 1, 1993 and granted February 2, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 1, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 1, 2015.
- 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.