Drill chucks
CA 1061529 A · Owner: Jacobs Manufacturing Company Limited (The) · Inventors: Derbyshire, George C.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
TITLE: "AN IMPROVEMENT IN OR RELATING TO DRILL CHUCKS". ABSTRACT OF THE DISCLOSURE: A drill chuck having tapered jaw elements carried by flexible elements, said jaw elements bearing against a tapering nose cone so that they are urged inwards accompanied by flexing of the flexible elements when urged axially relative to the nose cone.
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 September 4, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 4, 1996.
- 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.