Method and apparatus for forming space sections in a slide fastener
CA 1110838 A · Owner: Yoshida Kogyo K.K. · Inventors: Morita, Toyoo; Oura, Hiroshi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method and apparatus for forming space sections in a continuous length slide fastener chain are proposed in which the interlocking elements fastened on the carrier tapes within the section are pressed and deformed with a punch-die unit having a composite punch composed of an outer punch and an inner punch and the thus deformed elements are retained on the die as engaged with the recessed grooves on the upper surface of the die and lower surface of the inner punch while the carrier tapes are pulled and displaced by the individual grippers from the front of the punch-die unit to an obliquely rearward direction, preferably, at such an angle that the angle between the moving line of the …
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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 20, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 20, 1998.
- 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.