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Expired Canadian patentCanada

Intermittent drive for a paper supply roller

CA 1264058 C · Owner: Sharp Kabushiki Kaisha · Inventors: Tanaka, Hironori; Kotani, Matahira; Matsumoto, Masafumi

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

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Abstract From the Canadian patent

An intermittent drive mechanism is disclosed which includes a continuously rotating driving gear; a subordinately driven gear disposed proximal to the driving gear; an epicyclic gear capable of engagement with the driving gear by its own rotation along the periphery of the driven gear which remains engaged with the epicyclic gear; and a shift plate capable of causing the epicyclic gear to be either engaged with the driving gear or disengaged from it by its movement. When the epicyclic gear is engaged with the driving gear, the rotational force of the driving gear is transmitted to the subordinately driven gear via the epicyclic gear, whereas the transmission of the rotational force is …

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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 December 27, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 27, 2006.
  • 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 10, 1985
GrantedDecember 27, 1989
Term endedDecember 27, 2006
Patent numberCA 1264058 C
Classification (IPC)B65H3/44 +2 more

Timeline

Timeline From CIPO dates

1986198919921995199820012004Application filedDec 10, 1985Patent grantedDec 27, 1989Term endedDec 27, 2006

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