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Expired Canadian patentCanada

Vibratory tumbling apparatus

CA 2004850 C · Owner: Musschoot, Albert · Inventors: Musschoot, Albert

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

A vibratory material handling apparatus is provided for mixing of materials, cleaning, blending and/or shake-out of castings or the like. The apparatus comprises a container having a curved or arcuate material supporting surface disposed about a generally horizontal longitudinal axis wherein the material supporting surface has a plurality of generally circumferential, para11e1 troughs disposed about and extending along the longitudinal axis. The container, which is carried by a frame is resiliently, mounted to a mounting surface. The apparatus further comprises a vibration generator mounted on the container for producing vibratory forces directed along a linear path displaced not only from …

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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

  • Filed December 7, 1989 and granted February 8, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 7, 2009.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 7, 2011.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledDecember 7, 1989
GrantedFebruary 8, 2000
Term endedDecember 7, 2009
Patent numberCA 2004850 C
Classification (IPC)B01F11/00 +2 more

Timeline

Timeline From CIPO dates

1990199219941996199820002002200420062008Application filedDec 7, 1989Patent grantedFeb 8, 2000Term endedDec 7, 2009

Sources & verification

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