Retention knob for a tool holder and cutting tools employing the same
CA 1323980 C · Owner: Carboloy Inc. · Inventors: Newland, Paul W.; Kelm, Walter H.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A retention knob for reversibly locking a tool holder to a locking device in which the shaft of the retention knob has a pair of opposed recesses separated by non-recessed portions to thereby provide a significantly stronger locking engagement between the tool holder and the locking device. Also disclosed are cutting tool assemblies employing the retention knob.
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 November 9, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 9, 2010.
- 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.