Apparatus for controlling tension of film material for lamination thereof
CA 1281622 C · Owner: Colgate-Palmolive · Inventors: Elmore, Dennis C.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An apparatus for automatically adjusting the tension on materials being laminated or joined comprising a pair of supply rolls for said materials. A feed assembly is provided for unwinding and feeding the film materials to laminating rolls. Dancer arms are provided for adjusting the tension on the film materials. Computer actuated pneumatic assemblies automatically adjust the position of the dancer arms dependent on a signal to the computer from a device measuring the tension on the laminate from the laminating rolls.
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 March 19, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 19, 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.