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Expired Canadian patentCanada

Friction casting bolster pocket wear plate having a plurality of sides

CA 1180600 A · Owner: Standard Car Truck Company · Inventors: Geyer, Robert P.

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

A railroad car truck bolster has a plurality of pockets each of which will position a friction wedge for use in damping motion between the bolster and the side frame. Each pocket has a slanted rear wall and adjoining side walls perpendicular thereto the side walls being generally perpendicular to the longitudinal axis of the bolster. One of the side walls is designated the inboard side wall and the other is designated the outboard side wall. The present invention is specifically concerned with a wear plate which is positioned within the friction wedge pocket and has a main portion formed and adapted to substantially conform to the pocket slanted wall and at least one wall portion integral …

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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 January 8, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 8, 2002.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledDecember 3, 1982
GrantedJanuary 8, 1985
Term endedJanuary 8, 2002
Patent numberCA 1180600 A
Classification (IPC)B61F5/12

Timeline

Timeline From CIPO dates

1983198519871989199119931995199719992001Application filedDec 3, 1982Patent grantedJan 8, 1985Term endedJan 8, 2002

Sources & verification

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