Apparatus for fabricating multi-layer spiral tubes
CA 1237003 A · Owner: Mitsubishi Jukogyo Kabushiki Kaisha · Inventors: Kimura, Shigeaki; Yuzaki, Yoshinori; Oe, Tsutomu
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An apparatus for fabricating multi-layer spiral tubes including first drive means for performing rotation of an inner cylinder around which a web is to be wrapped spirally and movement of a slide base along the longitudinal direction of the inner cylinder, the slide base being disposed on a bed so as to be slidable along the longitudinal direction of the inner cylinder, a plurality of pairs of cradles mounted on the slide base for placing the inner cylinder thereon first, depressing rolls for wrapping the web second depressing rolls, for constraining a weld portion of the web an automatic gap, detector for detecting a gap between adjacent edge portions of the wrapped web, an automatic …
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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 24, 1988. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 24, 2005.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
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.