Roll unit and combination roll
CA 1287362 C · Owner: Nakamura, Hironori · Inventors: Yotsui, Toshiaki; Sato, Youichi; Ohkawa, Hideo
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A roll unit having a roll portion and a roll shaft inserting portion which are formed integrally with each other and further having means for engaging with another roll unit to be combined; and a combination roll formed by mounting a plurality of the roll units onto the roll shaft and locking the former to the latter.
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 August 6, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 6, 2008.
- 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.