Method of forming space section devoid of coupling elements in continuous slide fastener chain
CA 2019082 C · Owner: Kuse, Kazuki · Inventors: Matsumoto, Masao; Sanada, Yukio; Kuse, Kazuki
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An improved method of forming space sections devoid of coupling elements disposed, with a predetermined distance in a slide fastener, chain which is composed of a pair of continuous rows of interengaged coupling elements. In the method of forming one space section in a one-cycle, the slide fastener chain is transported intermittently below an element-removing apparatus. According to the preferred embodiment, the element-removing apparatus includes a punch and downstream and upstream locating pins are provided at the both ends of the punch. These pins engage to two elements respectively which, are terminal end elements of a normal portion not to be the space section, for positioning a …
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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
- Filed June 15, 1990 and granted January 30, 1996. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 15, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 15, 2012.
- 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
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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.