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Expired Canadian patentCanada

Pin type solid butt rotary coupler

CA 1108562 A · Owner: Amsted Industries Incorporated · Inventors: Kaim, John W.

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

A rotary type railroad car coupler is provided with a symmetrical and invertible yoke. A yoke collar constructed, so as to be capable of being reversible is disposed within, a cavity of the yoke. In one preferred embodiment a pin, connecting a shank of the coupler to the yoke collar is positioned so as to be equidistant from both ends of the yoke collar. Thus, as one end of the yoke collar becomes worn, the collar can be reversed. Improved yoke collar service life is obtained.

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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 September 8, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 8, 1998.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledSeptember 5, 1979
GrantedSeptember 8, 1981
Term endedSeptember 8, 1998
Patent numberCA 1108562 A
Classification (IPC)B61G9/00 +2 more

Timeline

Timeline From CIPO dates

1980198219841986198819901992199419961998Application filedSep 5, 1979Patent grantedSep 8, 1981Term endedSep 8, 1998

Sources & verification

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