Chucking device of workpiece in grinding machine
CA 1263028 C · Owner: Nemoto, Hiroshi · Inventors: Nemoto, Hiroshi; Okubo, Kimio
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A chucking device of a workpiece to be ground in a grinding machine, including a rotatable housing a pair, of elastically biased weight bodies which are opposed in the housing so as to come away from and close to each other a pair of opposed clamp plates which are provided on the respective weight bodies for relative movement and which have openings defining a center insertion opening in which the workpiece is inserted and an end, plate which is secured to the housing for covering the housing. The clamp plates are capable of inclining in planes thereof. The workpiece is firmly held in and by the center insertion opening of the clamp plates at at least four points of the center insertion …
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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
- Granted November 21, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 21, 2006.
- 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.