Apparatus for forming a row of coupling elements for slide fastener
CA 1251308 A · Owner: Yoshida Kogyo K.K. · Inventors: Matsuda, Yasuhiko
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An apparatus for forming a row of slide fastener, coupling element comprises a continuously rotatable die wheel having an annular peripheral groove for receiving a row of coupling element blanks in folded fashion and a, punching unit for forming coupling heads on the blanks in the groove. The punching unit includes a punch an, eccentric drive mechanism for imparting eccentric motion to the punch, and a linkage for regulating the eccentric motion of the punch, the drive mechanism having an outer ring connected at opposite ends to the punch and the linkage. Owing to the combination of the eccentric motion of the outer ring and the motion of the linkage the punch, is moved so as to follow 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 March 21, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 21, 2006.
- 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.