Rapid change drill holder assembly
CA 2026634 C · Owner: Craft, Ralph · Inventors: Craft, Ralph
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A rapid change drill holder assembly consisting of a chuckengaging adaptor holder for selective fixed engagement with a power tool chuck and a tool holder adaptor for selective operative engagement with the chuck-engaging adaptor holder so as to permit selective changing of tools fixedly mounted in the tool holder adaptor without the necessity of removing the chuck-engaging adaptor holder from the power tool chuck each time a tool change is required.
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 October 1, 1990 and granted December 27, 1994. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 1, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 1, 2012.
- 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.