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Expired Canadian patentCanada

Weighing apparatus and method

CA 1136765 A · Owner: General Mining Union Corporation Limited · Inventors: Kealy, Wellesley A.

CIPO record

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Abstract From the Canadian patent

This invention relates to a method of and apparatus for weighing and sorting articles according to their mass or a mass to physical characteristic ratio with the method including the steps of causing the articles to move at a known constant velocity measuring the, momentum of the articles and computing the momentum of each article with its known velocity to determine its mass and sorting the articles into fractions above and below a predetermined mass. Preferably a, characteristic such as the radio activity of the articles is measured and the articles are sorted into fractions above and below a predetermined mass to characteristic level. The apparatus includes a conveyor which drops the …

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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 30, 1982. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 30, 1999.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJune 11, 1979
GrantedNovember 30, 1982
Term endedNovember 30, 1999
Patent numberCA 1136765 A
Classification (IPC)B07C5/18 +2 more

Timeline

Timeline From CIPO dates

1980198219841986198819901992199419961998Application filedJune 11, 1979Patent grantedNov 30, 1982Term endedNov 30, 1999

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