Method of and apparatus for manufacturing paper stringer tape for slide fastener
CA 1204615 A · Owner: Yoshida Kogyo K.K. · Inventors: Yokoe, Kazuo; Sekine, Yukio
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method of and apparatus for manufacturing a pair of paper stringer tapes for slide fasteners from a pair of blank paper strips of a continuous length. The blank paper strips are fed longitudinally through a guide roller assembly. A pair of parallel spaced engraving wheels is spring-biased against one guide roller of the guide roller assembly. As the paper strips pass between the one guide roller and the respective engraving wheels, a pair of continuous folding lines of a constant depth is engraved on the blank paper strips along the respective inner longitudinal margin thereof. The inner longitudinal margin of each paper strip is folded on the folding line to provide a doubled edge on …
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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 May 20, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 20, 2003.
- 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.