Process and apparatus for conveying a thin web
CA 1073881 A · Owner: Bobst S.A. · Inventors: Risse, Jean-Claude; Nigg, Fritz; Schneider, Bruno
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In conveying a thin web such as film or photographic paper the, web is unrolled from a supply mechanism and introduced into guiding devices where it is driven near one of its edges. One edge of the web being continuously urged against a lateral guide. The length of web introduced into the guiding devices is metered and recorded and this data is transmitted to the, control circuit of the web drive. The web drive is actuated until the desired length of web introduced between the guiding devices corresponds to the length of web recorded by the control circuit. A slack loop is established where the web runs out of the guiding device and the web is wound up on a, delivery device.
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 18, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 18, 1997.
- 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.