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Expired Canadian patentCanada

Elastic drive coupling for drive wheel of track operated vehicle

CA 1050823 A · Owner: Bbc Brown Boveri And Company Limited · Inventors: Frantz, Edmund; Korber, Joachim; Guthlein, Heinz

CIPO record

Overview

Drawings and full text

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

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Abstract From the Canadian patent

An elastic drive coupling between an electrically powered hollow drive shaft and the drive wheel of a track operated vehicle such as for example an electric locomotive wherein an annular coupling plate is located adjacent to but spaced from the inner side of the drive wheel and the inner periphery of the coupling plate is secured to the hub of the drive wheel. The outermost of two concentric radially spaced, rings surrounding the hollow drive shaft and between which a rubber-containing elastic member is secured is fixed to the, outer periphery of the coupling plate and the innermost ring is fixed to the hollow drive shaft.

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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 March 20, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 20, 1996.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Filed—
GrantedMarch 20, 1979
Term endedMarch 20, 1996
Patent numberCA 1050823 A
Classification (IPC)B61C9/38 +2 more

Timeline

Timeline From CIPO dates

198019821984198619881990199219941996Patent grantedMarch 20, 1979Term endedMarch 20, 1996

Sources & verification

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