Title:
WELDING OF ELECTRIC WELDING JOINT
Document Type and Number:
Japanese Patent JPH07251456
Kind Code:
A
Abstract:
PURPOSE: To enable the axes of pipes composed of a thermoplastic resin to coincide with the axis of an electric welding joint connecting both pipes before welding the pipes.
CONSTITUTION: When pipes 1 composed of a thermoplastic resin are welded and connected using an electric welding joint, wedges 5 are inserted in the gaps generated between the pipes 1 and the electric welding joint 2. By this method, the axes of the pipes 1 are allowed to coincide each other to weld the pipes 1. Welding deficiencies, the outflow of a molten resin, the short-circuit of an electric wire or the like can be avoided.
Inventors:
ASANO HITOSHI
YOSHII TAKAAKI
YOSHII TAKAAKI
Application Number:
JP4436194A
Publication Date:
October 03, 1995
Filing Date:
March 15, 1994
Export Citation:
Assignee:
NIPPON KOKAN KK
International Classes:
F16L47/02; B29C65/30; B29C65/34; B29C65/36; B29C65/78; B29L23/00; B29L31/24; (IPC1-7): B29C65/30; B29C65/36; F16L47/02
Domestic Patent References:
| JPS5521232A | 1980-02-15 | |||
| JPS58219018A | 1983-12-20 | |||
| JPH06300177A | 1994-10-28 | |||
| JPH06265083A | 1994-09-20 | |||
| JPH06159581A | 1994-06-07 |
Attorney, Agent or Firm:
Toshiaki Hosoe
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