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Expired Canadian patentCanada

Workpiece storage system

CA 1105409 A · Owner: Lamb (F. Jos.) Company · Inventors: Graham, James T.; Brems, John H.

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

For use in a work processing line for workpieces, a workpiece storage system including a topologically closed loop track means having downwardly sloping surfaces coupled with elevators and lowerators in the loop, and work holding, gravity-operated pallets to run on said tracks having track engaging wheels equipped with retarding means responsive to wheel angular velocity and utilizing wheels of different diameters on the track depending on the loaded or loaded condition of the pallets to control the speed of the pallets. Auxiliary track means, pallet loaders and unloaders, and switching mechanisms are incorporated in the system with elevators and lowerators to allow the storage system to …

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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 21, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 21, 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.
FiledMay 7, 1979
GrantedJuly 21, 1981
Term endedJuly 21, 1998
Patent numberCA 1105409 A
Classification (IPC)B65G13/00 +1 more

Timeline

Timeline From CIPO dates

1980198219841986198819901992199419961998Application filedMay 7, 1979Patent grantedJuly 21, 1981Term endedJuly 21, 1998

Sources & verification

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