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Expired Canadian patentCanada

Feed apparatus and method

CA 1112676 A · Owner: Sphere Investments Limited · Inventors: Stone, Alan M.

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

Feed apparatus and method for feeding objects such as ore rocks in such a way that they are arranged into at least one moving stream of spaced apart objects. The objects are fed onto a first conveyor belt which may have longitudinal channels to arrange the objects into moving rows. The moving objects are projected from end of the belt in free flight path and caught on downwardly moving section of a second belt which passes to a horizontal run via a concavely curved belt section so that objects are stabilized on the second belt by centrifugal action to emerge on horizontal run as one or more fast moving streams. -1-

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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 November 17, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 17, 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 2, 1979
GrantedNovember 17, 1981
Term endedNovember 17, 1998
Patent numberCA 1112676 A
Classification (IPC)B65G47/26 +2 more

Timeline

Timeline From CIPO dates

1980198219841986198819901992199419961998Application filedApril 2, 1979Patent grantedNov 17, 1981Term endedNov 17, 1998

Sources & verification

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