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Expired Canadian patentCanada

Belt conveyors

CA 1102732 A · Owner: Dowty Meco Limited · Inventors: Butcher, Michael J.A.; Jelfs, Stewart D.

CIPO record

Overview

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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 belt conveyor which is extendible in length, inclu-, ding an endless belt a plurality of stools arranged to be spaced apart one from another lengthwise of the conveyor a plurality, of upper elements over which the upper run of the belt will pass in use, and a plurality of lower elements over which the lower run of the belt will pass in use one or more of said, stools being of inherently rigid basic construction including, respective said upper and lower elements and being provided with a gap at one side thereof and between said elements to enable it to be inserted, during operation of the conveyor into the, run of the conveyor in a direction substantially at right-angles thereto, in an …

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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 June 9, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 9, 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.
FiledApril 9, 1979
GrantedJune 9, 1981
Term endedJune 9, 1998
Patent numberCA 1102732 A
Classification (IPC)B65G15/60 +1 more

Timeline

Timeline From CIPO dates

1980198219841986198819901992199419961998Application filedApril 9, 1979Patent grantedJune 9, 1981Term endedJune 9, 1998

Sources & verification

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