Method of truing and angling cutter blades by sharpening
CA 2134551 C · Owner: Pedersen, Harry · Inventors: Kitchen, Richard L.; Pedersen, Harry
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Disclosed herein is a method of truing and angling the blades of a form-relieved face mill cutter during the blade sharpening process thus eliminating a separate time-consuming procedure for truing and angling. The position of the cutting edge of each blade is determined and a reference blade is selected. The sharpening plane of each remaining cutting blade is repositioned if, needed, such that after removing stock material from the blades in accordance with the newly repositioned sharpening plane the, cutting edge of each blade will follow essentially the same path when the cutter is rotated about its axis.
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 August 14, 1992 and granted April 28, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 14, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 14, 2014.
- 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.