Title:
DEVICE FOR WORK IMPLEMENTATION WITHOUT STOPPING FLOW, AND METHOD FOR WORK IMPLEMENTATION WITHOUT STOPPING FLOW
Document Type and Number:
WIPO Patent Application WO/2011/099398
Kind Code:
A1
Abstract:
A device for work implementation without stopping flow is provided with a sealed case (20) having a bifurcation-like branch hole (23) which is formed in a first divided case (21) and extends in a radial direction (C) of an existing pipe (1), and a rubber gasket (30) which seals the gap between the sealed case (20) and the existing pipe (1). A flange (28) for mounting and removing a boring machine (3) is provided in the first divided case (21). The sealed case (20) is capable of reciprocating in the pipe axial direction (L). The rubber gasket (30) forms a first sealed region (S1) which surrounds that area of the sealed case (20) where the branch hole (23) is provided, thereby covering up the branch hole (23); and a second sealed region (S2) which is adjacent to the first sealed region (S1) and is sealed with respect to the first sealed region (S1), which is located away from the first sealed region (S1) in the pipe axial direction (L), and which has a size large enough to be capable of covering up a hole bored by a cutter (3a).
Inventors:
SATO TOSHIYUKI (JP)
YOKOYAMA TAIHEI (JP)
YOKOYAMA TAIHEI (JP)
Application Number:
PCT/JP2011/051990
Publication Date:
August 18, 2011
Filing Date:
February 01, 2011
Export Citation:
Assignee:
SUIKEN CO LTD (JP)
SATO TOSHIYUKI (JP)
YOKOYAMA TAIHEI (JP)
SATO TOSHIYUKI (JP)
YOKOYAMA TAIHEI (JP)
International Classes:
F16L41/06; F16L55/00
Foreign References:
| JP2001330189A | 2001-11-30 | |||
| JP2001173872A | 2001-06-29 |
Attorney, Agent or Firm:
YAMAMURA YOSHINOBU (JP)
Yoshinobu Yamamura (JP)
Yoshinobu Yamamura (JP)
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Claims: