Means and method for providing indication of end portion of web material
CA 1087585 A · Owner: Xerox Corporation · Inventors: Barwick, Morris L.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Method and apparatus for providing an indication of when the web material remaining on the supply spool has been depleted to a predetermined amount, such as the end portion. An end portion of the web material to coupled to the supply spool hub and a predetermined amount of the web material is wound onto the spool in a first direction. The web material is then folded back onto itself and the remaining amount of web material to be placed on the supply spoolis wound onto the spool in a second and opposite direction. As the web materialis removed from the supply spool the supply spool hub and/or the shaft for the supply spool will reverse direction of rotation upon reaching the portion of …
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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 October 14, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 14, 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.