Mounting arrangement of a tool holder in a machine tool
CA 2082491 C · Owner: Kitaguchi, Ryoichi · Inventors: Kitaguchi, Ryoichi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An mounting arrangement of a tool holder in a machine tool comprises a main shaft and the toool holder each having an extending end face formed by extending a given reference end face of the main shaft and a given collar end face of the tool holder, toward one another respec-, tively, both of which end faces are normally separated with a prescribed clearance, with required extensions so as to come into contact with one another when a tapered shank of the tool holder is fitted into a flared hole of the main shaft, so that the tool holder can be mounted in the main shaft securely owing to a high degree of integration, without the occurence of friction due to the phenomenon of a fretting …
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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 November 9, 1992 and granted February 18, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 9, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 9, 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.