Cutting insert having a chipbreaker for thin chips
CA 2199404 C · Owner: Niebauer, Kenneth L. · Inventors: Niebauer, Kenneth L.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A cutting insert (1) having a chipbreaking configuration for effectively embrittling and breaking thin, foil-like chips (61) produced by drilling or other fine-cutting operations is provided. The cutting insert (1) includes a polygonal insert body (3) having a top surface (5) a side relief surface (9), and a cutting edge (11) defined therebetween and a chipbreaker (23) formed by , an elongated groove (25) disposed on the top surface (5) behind the cutting edge (11) in combination with a plurality of recesses (27) disposed over the groove (25) having opposing side edges (43). The back wall (34) of the groove (25) applies curling forces to the chips (61) while the opposing side edges , …
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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
- Filed November 9, 1995 and granted February 27, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 9, 2015.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 9, 2017.
- 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.