Wheel-assembly monitor for diagnosing passing railroad trains
CA 2097381 C · Owner: Wetzler, Gerd R. · Inventors: Wetzler, Gerd R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A monitor to diagnose wheel assemblies of passing railroad trains is provided herein. The monitor includes a cavity in and parallel to, a measurement tie, or in a hollow, railroad tie. The cavity houses infrared deflection units and at least one infrared detector, which make it possible to monitor all heat sources present in the vicinity of the wheel, assembly and the undercarriage of the train car while offering maximum protection against, mechanical and electrical factors. The wheel pressure and accelerator pickups provided, with the monitor allow accurate determination of the values needed to normalize the, infrared test results, e.g. wheel position wheel weight and tread , …
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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 31, 1993 and granted March 19, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 31, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 31, 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.