EXCAVATION PIPE RECOVERY TOOL - MITSUBISHI MATERIALS CORP

Title:

EXCAVATION PIPE RECOVERY TOOL

Document Type and Number:

Japanese Patent JP2016069860

Kind Code:

A

Abstract:

PROBLEM TO BE SOLVED: To provide an excavation pipe recovery tool capable of recovering an excavation pipe 1 and an excavation tool left in an excavation hole H by securely connecting the excavation pipe recovery tool to the excavation pipe 1 even if a rear end part of the broken excavation pipe 1 deviates from a center line of the excavation hole H.SOLUTION: A connection part 12 to be connected to an excavation pipe left in an excavation hole is provided at a tip part of a tool body 11 having an axis O in the center, and a guide member 15 comprising a guide part 15A, decreasing in inner diameter toward a rear end side and having the axis O in the center closer to a tip side than the connection part 12 is fitted to an outer peripheral side of the connection part 12.SELECTED DRAWING: Figure 8

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Inventors:

TANAKA KUNIHIKO
OTA HIROSHI

Application Number:

JP2014198521A

Publication Date:

May 09, 2016

Filing Date:

September 29, 2014

Export Citation:

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Assignee:

MITSUBISHI MATERIALS CORP

International Classes:

E21B31/12

Attorney, Agent or Firm:

Masatake Shiga
Mitsuo Teramoto
Yasushi Matsunuma
Fumihiro Hosokawa
Kazunori Onami

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