Title:
METHOD AND APPARATUS FOR BORING
Document Type and Number:
Japanese Patent JP2707054
Kind Code:
B2
Abstract:
PURPOSE: To perform boring operation at a small space simply and easily.
CONSTITUTION: A gearing for rotary power and a rotary mechanism for a boring rod 1 are set in a main body box 2 through which the boring rod 1 is passed, which is suspended by suspending equipment 3, and of which the dead load is used as thrust for drilling of the boring rod 1. The boring rod 1 can drill by only turning the boring rod 1, and other members for applying the thrust to the boring rod 1 are made unnecessary.
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Inventors:
Mitsuo Nishijima
Kiku Kojima
Kiku Kojima
Application Number:
JP6452994A
Publication Date:
January 28, 1998
Filing Date:
March 08, 1994
Export Citation:
Assignee:
Mitsuo Nishijima
Kiku Kojima
Kiku Kojima
International Classes:
E21B3/00; E21B7/00; (IPC1-7): E21B3/00; E21B7/00
Attorney, Agent or Firm:
Koji Hiki
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