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Expired Canadian patentCanada

Unidirectional agitation accessory for automatic washer

CA 1049803 A · Owner: Whirlpool Corporation · Inventors: Ruble, Ernest B.

CIPO record

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

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Abstract From the Canadian patent

UNIDIRECTIONAL AGITATION ACCESSORY, FOR AUTOMATIC WASHER" ABSTRACT OF THE DISCLOSURE, An agitator accessory for washing machines having an oscillating vertical-axis agitator, the accessory comprising a sleeve which is securable to the barrel of the agitator in coaxial alignment therewith, the sleeve having a vane means attached thereto. A one-way clutch means is included to rotate the agitator accessory incrementally during one-half, cycles of the oscillatory agitator movement to thereby force, fabrics being washed downward along the agitator and toward vanes extending from the skirt of the agitator.

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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 6, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 6, 1996.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Filed—
GrantedMarch 6, 1979
Term endedMarch 6, 1996
Patent numberCA 1049803 A
Classification (IPC)D06F13/00

Timeline

Timeline From CIPO dates

198019821984198619881990199219941996Patent grantedMarch 6, 1979Term endedMarch 6, 1996

Sources & verification

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