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Expired Canadian patentCanada

Reclaiming buckets for a stockpile reclaimer with a bucket wheel or bucket drum working in both directions of rotation

CA 1095946 A · Owner: Weserhutte Aktiengesellschaft · Inventors: Stahlmann, Willi; Merten, Uwe; Kruckemeier, Richard

CIPO record

Overview

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

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Abstract From the Canadian patent

The specification describes double buckets which, are not capable of being turned over. The double buckets are attached at the circumference of a bucket wheel or bucket drum of a revolving stockpile reclaimer and are effective in picking up material in either direction of rotation. The buckets are provided with scraper blades that are connected to the parallel side walls or partition walls of the buckets. The bucket backplate rotatably supported at the side walls or partition walls by means of a shaft, the bucket backplates are capable of being swung over within the space of the bucket. Thus acting in the same manner for both directions of rotation collected stockpile materials may be …

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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 February 17, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 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.
FiledMarch 7, 1979
GrantedFebruary 17, 1981
Term endedFebruary 17, 1998
Patent numberCA 1095946 A
Classification (IPC)E02F3/24 +1 more

Timeline

Timeline From CIPO dates

1980198219841986198819901992199419961998Application filedMarch 7, 1979Patent grantedFeb 17, 1981Term endedFeb 17, 1998

Sources & verification

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