Tool grinding machine
CA 2118568 C · Owner: Amada Metrecs Company, Limited · Inventors: Uchida, Kazuyuki
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The tool grinding machine can grind the cutting edge of a punch without disassembling the punch body from the punch assembly and further can grind the cutting edge of the upper surface shoulder portion of the die. Further the punch and, die of various shapes can be ground easily by selecting an appropriate previously stored operation mode determined according to grinding conditions. The tool grinding machine comprises: a rotary table 33 rotatably disposed on a slider 29 supported on a base 3 movably in the right and left direction; and a grinding tool 53 disposed axially away from the rotary table and rotatably and movably in an axial direction of the rotary table 33, for grinding workpiece …
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 March 8, 1994 and granted May 21, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 8, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 8, 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.