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Expired Canadian patentCanada

Inclined planar screen with spaced exciting and reactor vibration means

CA 1164413 A · Owner: Kinergy Corporation · Inventors: Wilson, Paul A.; Dumbaugh, George D.

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 invention relates to a flat stroke sifter screen having a vibratory excitor mounted at the inlet end and drive springs at the outlet end with a counterbalancing member having a tuning plate and stabilizers for the counterbalance whereby the, lateral vibratory action of the sifter is in the form of an elliptical motion adjacent the inlet end and a substantially straight back and forth or axial, motion is obtained adjacent the discharge end.

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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 27, 1984. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 27, 2001.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledApril 30, 1981
GrantedMarch 27, 1984
Term endedMarch 27, 2001
Patent numberCA 1164413 A
Classification (IPC)B07B1/42

Timeline

Timeline From CIPO dates

1982198419861988199019921994199619982000Application filedApril 30, 1981Patent grantedMarch 27, 1984Term endedMarch 27, 2001

Sources & verification

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