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Expired Canadian patentCanada

Method of sorting fluidized particulate material and apparatus therefor

CA 1091621 A · Owner: Canadian Patents And Development Limited · Inventors: Beeckmans, Jan M.

CIPO record

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Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

Jan M. Beeckmans ABSTRACT OF THE DISCLOSURE, Fluidized particulate material in an elongated fluidizing bed is separated by means of paddles on an endless, chain running around sprockets urging at least an upper, portion of the fluidized bed towards one end of the bed to enrich that end with lighter particles and the other end with heavier particles. The particles thus separated are removed from the ends of the bed by, for example flowing, over weirs. In one embodiment only the paddles passing along the underside of the chain dip into the fluidized bed while in another embodiment the whole chain and all of the paddles are immersed in the fluidized bed.

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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 December 16, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 16, 1997.
  • 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 29, 1978
GrantedDecember 16, 1980
Term endedDecember 16, 1997
Patent numberCA 1091621 A
Classification (IPC)B03B4/00 +1 more

Timeline

Timeline From CIPO dates

1979198119831985198719891991199319951997Application filedAug 29, 1978Patent grantedDec 16, 1980Term endedDec 16, 1997

Sources & verification

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