Cutting tool assembly and cutting tool bit
CA 2184730 C · Owner: Cerny, Max · Inventors: Cerny, Max; Zitzlaff, Wolfgang
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A cutting tool assembly with a clamping mechanism for releasably clamping a tool bit (18) on a tool holder (10) is disclosed. The tool holder (10) defines an elongated planar seating surface (12) with a socket (14) on its forward end and a threaded bore (20) on its rear end. A further threaded bore (22) is provided in the seating surface intermediate the forward and rearward ends. A conical tool bit (18) forms a circular cutting edge (52) and has a shank (16) adapted to be received in the socket (14). An elongated bar-shaped clamping member (32) has one end engaging in a circumferential groove (28) of the tool bit (18). The opposite end of the clamping member (32) has an arcuate concave …
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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 15, 1995 and granted July 13, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 15, 2015.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 15, 2017.
- 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.