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Expired Canadian patentCanada

Friction roller conveyor

CA 1287008 C · Owner: Carl Schenck Ag · Inventors: Zorgiebel, Karl Heinz

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

Abstract of the Disclosure A friction roller conveyor includes friction rollers mounted within a housing. A housing cover has openings therein through which the friction rollers partially extend. The rollers are secured against axial shifting and are driven. The friction roller conveyor is made from easy to assemble and replace individual elements, and may be walked on and driven over without damage to the conveyor, the people or to the crossing vehicles. Repairs can be made without disassembling the entire conveyor construction.

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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 July 30, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 30, 2008.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMay 30, 1988
GrantedJuly 30, 1991
Term endedJuly 30, 2008
Patent numberCA 1287008 C
Classification (IPC)B65G13/07 +2 more

Timeline

Timeline From CIPO dates

1989199119931995199719992001200320052007Application filedMay 30, 1988Patent grantedJuly 30, 1991Term endedJuly 30, 2008

Sources & verification

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