Internal pull broach with indexable inserts
CA 2125892 C · Owner: Peuterbaugh, Bruce G. · Inventors: Peuterbaugh, Bruce G.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An internal pull broach is disclosed for roughing, semi-finishing and finishing at least one wall in a workpiece during a single stroke machining operation. The broach includes an elongated cutting tool holder having a longitudinal axis and a plurality of laterally extending, longitudinally spaced pockets. Cutter inserts are disposed in each of the pockets to define a plurality of sequentially acting protuberances. Each protuberance has a cutting edge extending laterally with respect to the longitudinal axis of the tool holder substantially crossed an entire width of the tool holder for progressively cutting into the wall of the workpiece sequentially as the tool holder moves during the …
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 15, 1994 and granted December 30, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 15, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 15, 2016.
- 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.