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Expired Canadian patentCanada

Method of machining solids of revolution by rotary cutting tools and a toolholder for carrying same into effect

CA 1104384 A · Owner: Fiziko-Tekhnichesky Institut Akademii Nauk Belorusskoi Ssr · Inventors: Sakun, Anatoly F.; Bazin, Valentin T.; Borisenko, Alexandr V.

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Abstract From the Canadian patent

A method of marching solids of revolution by a rotary cutting tool whose effective portion is shaped as a solid of revolution set on a spindle and having a circular cutting lip, said solid of revolution being imparted rotation during the cutting process, wherein the tool axis is positioned in the plane parallel to the basic plane passing through the axis of machine centres and makes up an angle with the projection of the axis of machine centres on said plane. The distance from the plane of the tool axis to said basic plane and said angle of setting the tool axis are estimated using the following relation:, where H is the distance from the plane of the tool axis to the basic plane passing …

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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 July 7, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 7, 1998.
  • 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 30, 1978
GrantedJuly 7, 1981
Term endedJuly 7, 1998
Patent numberCA 1104384 A
Classification (IPC)B23B3/00 +1 more

Timeline

Timeline From CIPO dates

1979198119831985198719891991199319951997Application filedMarch 30, 1978Patent grantedJuly 7, 1981Term endedJuly 7, 1998

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