Title:
IMPROVED HOLE DRILLING APPARATUS USING SCREW CASINGS AND EARTH ANCHOR METHOD USING SAME
Document Type and Number:
WIPO Patent Application WO/2019/022581
Kind Code:
A1
Abstract:
The present invention relates to an apparatus for drilling a hole in the ground and a ground reinforcing method and, more specifically, to an improved hole drilling apparatus using screw casings and an earth anchor method using same, in which a head part and a casing or neighboring casings are coupled by keys and key grooves so as to be inseparable when drawing the casings, even if rotated in the direction opposite to the screw coupling direction, and the rotation in the opposite direction when drawing the casings prevents grooves formed by screws from being destroyed, resulting in an improved ground reinforcing effect.
Inventors:
KANG IK HI (KR)
Application Number:
PCT/KR2018/008594
Publication Date:
January 31, 2019
Filing Date:
July 30, 2018
Export Citation:
Assignee:
KANG IK HI (KR)
International Classes:
E02D7/00; E02D5/80; E02F5/20; E21B7/02; E21B10/44
Foreign References:
| KR20060100790A | 2006-09-21 | |||
| KR101467142B1 | 2014-12-01 | |||
| KR200368038Y1 | 2004-11-17 | |||
| JP2003027463A | 2003-01-29 | |||
| KR200481009Y1 | 2016-08-02 |
Attorney, Agent or Firm:
PATENT LAW FIRM GRAND KOREA (KR)
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