Cutting tools
CA 1332732 C · Owner: Stroud, Donald S. · Inventors: Stroud, Donald S.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
There are disclosed two embodiments of a hard metal insert adapted to be installed on the face of a cutting tool, each insert comprising inner and outer bodies having particles of carbide or other highly abrasive material sintered in a binder of cobalt or other less abrasive but, tougher metal, and having wear surfaces of their outer ends configured to form a tip on the outer end of the inner body and wherein the particle size and/or chemical composition of the bodies are such that the inner body is harder but less, tough, than the outer body.
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
- Granted October 25, 1994. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 25, 2011.
- 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.