Milling cutter and insert
CA 2311627 A1 · Owner: Magill, William C. · Inventors: Kucharik, Kay E.; Shaffer, William R.; Acero, Robert A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A three-dimensional mill (10) capable of plunging ramping, circle , interpolating and other milling processes while providing a finished surface not in need of finish grinding. The milling cutter includes cutting inserts (12, 14) of a modified design including flats (100 102, 104, 106) separating , rounded corners of a two radius design. Each insert also includes a rail (50) that is secured to the milling cutter (10) along a longitudinal surface that is radial to the axis of the milling cutter at any cross-sectional plane.
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 November 18, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 18, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 18, 2020.
- 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.