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Expired Canadian patentCanada

Blade mounting for a chipper blade

CA 2094539 C · Owner: Inter-Wood-Maschinen Gmbh & Co. Kg · Inventors: Schaefer, Karl

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 blade mounting for a chipper blade of a woodchipping machine, the chipper blade having a back and a fore-part, the blade mounting including: a disk coverplate having an inner slope which bears against the back of the chipper blade; a blade holder having at least two grooves which are oriented perpendicular to a longitudinal axis of the blade holder and parallel to a plane of the chipper blade, the blade holder bearing against the fore-part of the chipper blade; adjusting screws located in the grooves in the blade holder; and dogs for underpinning a bottom edge of the chipper blade at at least two locations, the dogs being adjusted by the adjusting screws.

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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 April 21, 1993 and granted June 18, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 21, 2013.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 21, 2015.
  • 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 21, 1993
GrantedJune 18, 2002
Term endedApril 21, 2013
Patent numberCA 2094539 C
Classification (IPC)B27G3/00 +1 more

Timeline

Timeline From CIPO dates

1994199619982000200220042006200820102012Application filedApril 21, 1993Patent grantedJune 18, 2002Term endedApril 21, 2013

Sources & verification

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