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Expired Canadian patentCanada

Method controlling work-feed rate for cutting materials

CA 2222700 C · Owner: Simonds Industries, Inc. · Inventors: Smith, H. Reid

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 positioned sensing device (12) measures and/or calculates the lateral position and movement of a saw blade (30). These measured and calculated values are used to automatically alter the work-feed rate and/or saw blade rim speed either up or down as sawing conditions change within the work piece or between different work pieces.

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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 December 9, 1996 and granted February 9, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 9, 2016.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 9, 2018.
  • 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 9, 1996
GrantedFebruary 9, 1999
Term endedDecember 9, 2016
Patent numberCA 2222700 C
Classification (IPC)B23Q15/00 +2 more

Timeline

Timeline From CIPO dates

1997199920012003200520072009201120132015Application filedDec 9, 1996Patent grantedFeb 9, 1999Term endedDec 9, 2016

Sources & verification

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