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Expired Canadian patentCanada

Railway truck

CA 1268993 C · Owner: Electro-Motive Diesel, Inc. · Inventors: Ramos, Remigio R.; Goding, David J.

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

Abstract, A self-steering railway truck is disclosed having a novel axle relating traction linkage connecting with the bearing housings of a separable suspension system having detachable spring seats shimable for height adjustment. The brake mechanism is mounted on the axle hung traction motors to maintain braking forces within the attached elements and avoid affecting the self-steering action of the wheel and axle assemblies.

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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 May 15, 1990. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 15, 2007.
  • 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 12, 1986
GrantedMay 15, 1990
Term endedMay 15, 2007
Patent numberCA 1268993 C
Classification (IPC)B61C9/50 +2 more

Timeline

Timeline From CIPO dates

1987199019931996199920022005Application filedNov 12, 1986Patent grantedMay 15, 1990Term endedMay 15, 2007

Sources & verification

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