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Expired Canadian patentCanada

Arrangement for feeding bulk material tending to cake

CA 1202007 A · Owner: Deutsche Babcock Werke Aktiengesellschaft · Inventors: Benninghoff, Helmut; Buchmuller, Horst

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

In order to avoid caking of bulk material when feeding from a feeder into an inlet opening of lesser cross-section n trough with a central discharge, opening is located below the discharge of a feeder. Two double paddle conveyors extend in the trough towards the central discharge opening. A vertical gravity tube joins on the trough which tube is surrounded by one or, several annular channels guiding a gaseous medium. This medium forms a gaseous screen between the bulk material flow and the gravity tube.

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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 March 18, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 18, 2003.
  • 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 3, 1983
GrantedMarch 18, 1986
Term endedMarch 18, 2003
Patent numberCA 1202007 A
Classification (IPC)B65D88/64 +1 more

Timeline

Timeline From CIPO dates

1984198619881990199219941996199820002002Application filedMay 3, 1983Patent grantedMarch 18, 1986Term endedMarch 18, 2003

Sources & verification

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