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Expired Canadian patentCanada

Cross blending electro-dynamic/friction brake system for multi-car trainconsist having mixed power and non-power cars

CA 1283148 C · Owner: Westinghouse Air Brake Company · Inventors: Reiss, John R.; Cymbor, Wayne P.; Rumsey, Steven C.

CIPO record

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Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

Case No. 8299), 25852-283, ABSTRACT OF THE DISCLOSURE A cross blending brake system for a multi-car train having power cars that provide regenerative braking through the electro-dynamic action of the car's traction motors as, well as friction braking through an electric/friction brake blending valve, and non-power cars that provide friction braking only through an electric/friction brake blending valve. Since the regenerative brake effort on the power cars is limited only by the available wheel to rail adhesion on these cars, the regenerative action of the electro-dynamic brake provides brake effort in excess of the power car brake requirement, thus reducing the friction brake requirement …

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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

  • Granted April 16, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 16, 2008.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledNovember 4, 1986
GrantedApril 16, 1991
Term endedApril 16, 2008
Patent numberCA 1283148 C
Classification (IPC)B60T13/74 +2 more

Timeline

Timeline From CIPO dates

19871990199319961999200220052008Application filedNov 4, 1986Patent grantedApril 16, 1991Term endedApril 16, 2008

Sources & verification

Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.