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Expired Canadian patentCanada

Knife changing method in a veneer lathe

CA 2113978 C · Owner: Ninomiya, Michito · Inventors: Ninomiya, Michito

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 knife changing method is disclosed which is applicable to a veneer lathe equipped with a knife carriage to which a veneer peeling knife is clamped with its cutting edge set at a veneer peeling elevation relative to the knife carriage. The knife carriage is shiftable to at least one knife changing position and the lathe has formed in at least one of its side frames a knife passage adjacent the knife changing position of the carriage. In the knife changing operation, the knife carriage is firstly shifted to its knife changing position, where an old knife is released from the knife carriage by undoing knife clamps. The freed knife is laterally moved away from the veneer lathe through 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

  • Filed January 21, 1994 and granted November 17, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 21, 2014.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 21, 2016.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJanuary 21, 1994
GrantedNovember 17, 1998
Term endedJanuary 21, 2014
Patent numberCA 2113978 C
Classification (IPC)B27C7/00 +2 more

Timeline

Timeline From CIPO dates

1995199719992001200320052007200920112013Application filedJan 21, 1994Patent grantedNov 17, 1998Term endedJan 21, 2014

Sources & verification

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