Device and process for cleaning electrified contact rail insulators for rail rapid transit systems
CA 2508151 C · Owner: Vohra, Arun · Inventors: Vohra, Arun
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A device and process for cleaning electrical insulators mourned under an electrified contact rail parallel to a rail track comprises positioning arm(s) attached to a vehicle that travels on the track and a cleaning station with fixed or moveable fingers. The fingers have attached cleaning tools and engage operate on, partly rotate around the circumference of the insulator and disengage, as the vehicle passes by the insulator. The cleaning station can also ride on the contact rail and have moveable vertical members with cleaning tools attached to L-shaped tool holders that rotate around a portion of the circumference of the insulator. Cleaning tools include powered rotating reciprocating, …
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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 25, 2005 and granted May 14, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 25, 2025.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
- 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.