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Expired Canadian patentCanada

Hydraulically dampened railway truck bolster

CA 1052181 A · Owner: A. Stucki Company · Inventors: Wiebe, Donald

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 apparatus for railway freight car control including a damping device adapted to be interposed between a bolster end and side frame member in a manner that the longitudinal axis thereof is inclined inwardly towards the swing axis of the side frame thus providing for a combined: control effect for hunting and swaying.

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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 10, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 10, 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—
GrantedApril 10, 1979
Term endedApril 10, 1996
Patent numberCA 1052181 A
Classification (IPC)B61F5/12 +2 more

Timeline

Timeline From CIPO dates

198019821984198619881990199219941996Patent grantedApril 10, 1979Term endedApril 10, 1996

Sources & verification

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