Cutting insert and cutter for milling
CA 2178245 C · Owner: Valenite Inc. · Inventors: Reiterman, Lee; Plutschuck, Lawrence; Doxen, Paul R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An insert for milling applications in which a radial rake face includes a concave conical portion defined to achieve constant positive radial rake throughout the length of a radial cutting edge at the angle of inclination thereof as the insert is intended to be mounted in a cutter body. The insert includes an axial rake face having a sloping portion defined to achieve positive axial rake as the insert is intended to be mounted in a cutter body. The upper surface of the insert includes planar regions and bend surfaces merging smoothly with the radial rake faces and axial rake faces to assist in chip expulsion during cutting.
Read the whole patent
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 June 5, 1996 and granted August 24, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 5, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 5, 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.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.