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Expired Canadian patentCanada

Scraper elevator drive mounting

CA 1096339 A · Owner: Fiat-Allis Construction Machinery, Inc. · Inventors: Boersma, Richard F.

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 conveyor drive roller mounting system for controlling misalignment of the drive roller by mounting an end of the conveyor drive roller on a resiliently mounted torque arm which permits the drive roller to align with the conveyor path of movement.

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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 February 24, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 24, 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.
FiledAugust 17, 1977
GrantedFebruary 24, 1981
Term endedFebruary 24, 1998
Patent numberCA 1096339 A
Classification (IPC)B65G23/22

Timeline

Timeline From CIPO dates

1978198119841987199019931996Application filedAug 17, 1977Patent grantedFeb 24, 1981Term endedFeb 24, 1998

Sources & verification

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