Method for manufacturing poly-v pulleys
CA 1137286 A · Owner: Goshi Kaisha Kanemitsu Doko Yosetsu-Sho · Inventors: Kanemitsu, Yukio
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method for manufacturing a poly-V pulley comprising pre-forming the flange wall of a cup-shaped blank to have a corrugated cross section having a series of valleys formed around the outer circumference thereof axially compressing the corrugated flange wall of the blank, and pressing a rotary forming roller against valleys formed around the outer circumference of the flange wall to form each of valleys to a predetermined V-groove. The axially compressing process is carried out keeping respective outer circumference of axially movable auxiliary forming rollers inserted into their corresponding valleys formed around the outer circumference of the flange wall of the blank.
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 December 14, 1982. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 14, 1999.
- 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.