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Expired Canadian patentCanada

Cutting tool compensator for rotary machine tool

CA 1270385 C · Owner: Mathie, Gerald Woodrow · Inventors: Mathie, Gerald Woodrow; Van Sickle, Richard Glenn

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 machine tool of the type having a rotatably mounted housing circumscribing a longitudinal axis of rotation and adapted for having coupled thereto a tool holder having at least one cutting tool which is adjustable radially of the axis such that a cutting edge of the cutting tool is caused to engage and disengage a workpiece as a result of a camming action between the cutting tool and a drawbar resulting from reciprocation of the draw-bar as the roller screw to which it is attached rotates.

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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 19, 1990. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 19, 2007.
  • 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 30, 1985
GrantedJune 19, 1990
Term endedJune 19, 2007
Patent numberCA 1270385 C
Classification (IPC)B23B29/03

Timeline

Timeline From CIPO dates

19861989199219951998200120042007Application filedDec 30, 1985Patent grantedJune 19, 1990Term endedJune 19, 2007

Sources & verification

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