Electrical brake system for electric rolling stock
CA 1186037 A · Owner: Mitsubishi Denki Kabushiki Kaisha · Inventors: Awano, Toshiaki; Shikata, Susumu; Koyama, Shigeru
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Disclosed is an electrical brake system for an electric rolling stock including a filter condenser and resistorchopper. If the voltage across the filter condenser is going to rise excessively due to an abrupt variation of the trolly load or a momentary coming off of the pantagraph from the trolly, it is detected promptly and the resistorchopper connected in parallel to the filter condenser is operated so as to suppress the excessive voltage and at the same time reduce the resistor-chopper current automatically in accordance with the predetermined timing pattern not to, a complete cut off of the regenerative braking current but, maintaining the regenerative control thereby allowing a, quick …
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
- Granted April 23, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 23, 2002.
- 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.