Title:
CONNECTION METHOD AND CONNECTION STRUCTURE OF PLASTIC PIPE
Document Type and Number:
WIPO Patent Application WO/2003/060372
Kind Code:
A1
Abstract:
Methods for connecting, to each other, the ends of plastic pipes formed by inserting fiber-reinforced material between tubular inner and outer layers formed of resin, the method for connecting, to each other, the ends of the plastic pipes having spirally wound fiber-reinforced material inserted therein comprising the steps of cutting off the outer layer from the ends of both pipes, unwinding the fiber-reinforced material to expose the inner layer, butt-fusing the inner layers to each other, desirably, re-winding the unwound fiber-reinforced material on the outer peripheral surfaces of the inner layers, and winding another fiber-reinforced material on the outer peripheral surfaces thereof so as to lie across the ends of both pipes; the method for connecting, to each other, the ends of the plastic pipes axially arranged fiber-reinforced material inserted therein comprising the steps of cutting off the outer layers from both ends of the pipes, inversing the fiber-reinforced material to expose the inner layers, butt-fusing the inner layers to each other, returning the fiber-reinforced material again to the outer peripheral surfaces of the inner layers, and disposing another fiber-reinforced material on the outer peripheral surfaces thereof so as to lie across the ends of both pipes.
Inventors:
TSUNAGA MASAYUKI (JP)
SATOH MASAHIRO (JP)
KAWANO SHOJI (JP)
SAKAI ROKURO (JP)
HOSODA EIJI (JP)
SUMIDA ATSUSHI (JP)
YASHIRO HIDEKI (JP)
SATOH MASAHIRO (JP)
KAWANO SHOJI (JP)
SAKAI ROKURO (JP)
HOSODA EIJI (JP)
SUMIDA ATSUSHI (JP)
YASHIRO HIDEKI (JP)
Application Number:
PCT/JP2003/000154
Publication Date:
July 24, 2003
Filing Date:
January 10, 2003
Export Citation:
Assignee:
MESCO INC (JP)
SAKAI SANGYO CO LTD (JP)
TSUNAGA MASAYUKI (JP)
SATOH MASAHIRO (JP)
KAWANO SHOJI (JP)
SAKAI ROKURO (JP)
HOSODA EIJI (JP)
SUMIDA ATSUSHI (JP)
YASHIRO HIDEKI (JP)
SAKAI SANGYO CO LTD (JP)
TSUNAGA MASAYUKI (JP)
SATOH MASAHIRO (JP)
KAWANO SHOJI (JP)
SAKAI ROKURO (JP)
HOSODA EIJI (JP)
SUMIDA ATSUSHI (JP)
YASHIRO HIDEKI (JP)
International Classes:
B29C65/00; B29C65/50; F16L47/02; F16L59/20; B29C65/02; (IPC1-7): F16L47/02; B29C65/02; F16L11/08
Domestic Patent References:
| WO2000032978A1 | 2000-06-08 |
Foreign References:
| JP2000346271A | 2000-12-15 | |||
| JPH11227051A | 1999-08-24 |
Other References:
See also references of EP 1464884A4
Attorney, Agent or Firm:
Ogawa, Shin-ichi (Noguchi & Saika International Patent
Office Akiyama Building 22-1, Toranomon 1-chome Minato-ku Tokyo, JP)
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