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Expired Canadian patentCanada

Method of breaking the feed in a transportable chopping apparatus

CA 1188603 A · Owner: Perusyhtyma Oy · Inventors: Parviainen, Jaakko

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

When making wood chips by means of a transportable chopping apparatus, the power of a machine may be insufficient for continuous chopping of a wood load positioned on a feeding means. Thus, the chopping operation must be intermittently stopped by manual control or automatically in order to reset the sufficient number of revolutions. Otherwise the number of revolutions will fall below a critical value, a chopper may be clogged and a machine indeed stopped. The knives of a chopper usually have a powerful self-feed, in other words while, chiiping the wood said knives also pull a log in the feeding direction. Thus, mere stopping of the feeding means is not always enough to stop the chopping but …

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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 June 11, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 11, 2002.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMarch 18, 1982
GrantedJune 11, 1985
Term endedJune 11, 2002
Patent numberCA 1188603 A
Classification (IPC)B27L11/00

Timeline

Timeline From CIPO dates

1983198519871989199119931995199719992001Application filedMarch 18, 1982Patent grantedJune 11, 1985Term endedJune 11, 2002

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