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Expired Canadian patentCanada

Reversing drive for triple action agitator

CA 1282606 C · Owner: Mason, Anthony · Inventors: Mason, Anthony; Cuthbert, Victor Warren

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 reversing drive for a triple action agitator is provided in which the agitator has an upper portion with helical grooves formed therein and a thruster barrel is received over the agitator upper portion. The thruster barrel has inwardly directed pegs which cammingly ride in the grooves to provide vertical movement to the thruster relative to the agitator. A two position clutch has an alternating rachet-type engagement between the agitator and the thruster to prevent rotary motion between the thruster and agitator when the agitator is rotating in a first direction, but to permit rotary motion between the thruster and agitator when the agitator is rotating in a second direction when 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 April 9, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 9, 2008.
  • 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 6, 1987
GrantedApril 9, 1991
Term endedApril 9, 2008
Patent numberCA 1282606 C
Classification (IPC)D06F17/08 +1 more

Timeline

Timeline From CIPO dates

1988199119941997200020032006Application filedApril 6, 1987Patent grantedApril 9, 1991Term endedApril 9, 2008

Sources & verification

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