Title:
METHOD AND DEVICE FOR CONNECTING PIPELINE TO MANHOLE
Document Type and Number:
Japanese Patent JP2689243
Kind Code:
B2
Abstract:
PURPOSE: To eliminate troublesome work required in connecting parts by a method wherein an attachment is connected tightly to a cylindrical joint equipped with sealing materials, then a medium bore pipe is connected to the attachment, and finally the joint is connected to the manhole side.
CONSTITUTION: A connecting device is composed of a cylindrical joint 1 having a fitting flange 3 that is integrally formed with the joint and an attachment 2. One end of the attachment 2 is made in the outer diameter that can be fitted into the joint 1, and the other end thereof is made in the outer diameter that can be fitted to an annular step of a medium bore pipe 9. A stopper 11 is provided to a location near the other end of the attachment. An elastic body 4 is attached to the fitting flange 3 so that water leakage does not occur between the joint 1 and a side wall 10 of a manhole. An elastic ring 5 is provided to the inner circumference of the joint 1 so that the joint 1 can be connected tightly with the attachment 2. After the attachment 2 is connected to the joint 1, the medium bore pipe 9 is connected to the attachment 2, then the joint 1 is connected to the side wall 10 of the manhole.
Inventors:
Hiroshi Shiomi
Takayuki Wada
Hiroshi Yamazaki
Toshio Akagawa
Takayuki Wada
Hiroshi Yamazaki
Toshio Akagawa
Application Number:
JP17348991A
Publication Date:
December 10, 1997
Filing Date:
April 15, 1991
Export Citation:
Assignee:
Nippon Telegraph and Telephone Corporation
International Classes:
E02D29/12; F16L5/00; H02G9/06; H02G9/10; (IPC1-7): E02D29/12; F16L5/00; H02G9/06; H02G9/10
Attorney, Agent or Firm:
Abe Isao
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