Method and apparatus for bending manufacturing of long workpiece
CA 2020259 C · Owner: Kitsukawa, Motohiko · Inventors: Kitsukawa, Motohiko; Suzuki, Atsuo
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method and an apparatus for the manufacture of a long workpiece capable of bending different sections of the workpiece at different bending radii while preventing, buckling deformation during bending of small bending radius sections and a lowering of a productivity. The speed of travel of the workpiece is controlled to be lower for sections requiring a larger degree of bending per unit length, so as to prevent the buckling deformation and to, be higher for sections requiring smaller bending per unit length, so as to prevent the lowering of the productivity.
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 June 29, 1990 and granted July 15, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 29, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 29, 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.