Variable nip minimum wrap calender
CA 1065658 A · Owner: Beloit Corporation · Inventors: Dreher, George L.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A pair of calender rolls have the web to be calendered directed to wrap only about 90° in travelling on one of the rolls into the nip of the rolls and then to wrap only about 90° on the other of the rolls after leaving the nip. Pressure of the nip is variable. Additional variable nips may be provided by means of rolls located in nip relation to the first two rolls to engage the web about 90° from the nip of the first two rolls. Automatic sheet threading is provided for. Provision is made for applying liquid solution to the web in the calender.
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 November 6, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 6, 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.