Helical insert and cutter bodies
CA 2487301 A1 · Owner: Craig, Karen A. · Inventors: Craig, Karen A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A cutter system (10) that is designed to create a continuous cutting true helix while having cutting inserts (14) that are indexable on at least two cutting edges (66 and 68) by rotating the cutting insert. High positive radial and axial rakes enable free cutting machining with a fine finish and low horsepower consumption. The back face (40) of the insert (14) is substantially flat and is used for face contact on lockup with a mounting pocket (34) on the cutter body (12) when the insert screw is tightened. The mounting pocket (34) is designed for ease of manufacture to limit tolerance buildup to ensure repeatable insert (14) positioning and to maintain accuracy for a fine 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 May 20, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 20, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 20, 2025.
- 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.