Title:
MULTIDIRECTIONAL AUGER BIT
Document Type and Number:
WIPO Patent Application WO/2022/080161
Kind Code:
A1
Abstract:
The present invention provides a technology for performing simultaneous drilling on a surface to be drilled in a drilling direction and a borehole wall direction, in a drilling direction and a pile core direction, or in all these directions. The present invention is a multidirectional auger bit 1 which is attached to an auger head, the multidirectional auger bit comprising a base part 2 having an end projecting in the axial direction of the auger head, and leg parts 3, 4 continuous with the base part. The base part comprises a planar part 2a continuous with the leg parts, first inclined parts 2b to 2d inclined from the planar part toward an end side in the axial direction of the auger head, left and right side parts 2e, 2f continuous from the first inclined parts, and a second inclined part 2g inclined from the first inclined parts toward a leg part side in the axial direction of the auger head. The first inclined parts, the side parts, and the second inclined part are provided with a first carbide tip. A second carbide tip is provided projecting in a direction perpendicular to the left and right side parts from one of the left and right side parts to the first inclined parts.
Inventors:
ISHIZUKA TAKEMI (JP)
Application Number:
PCT/JP2021/036552
Publication Date:
April 21, 2022
Filing Date:
October 04, 2021
Export Citation:
Assignee:
METAL TOOL INC (JP)
International Classes:
E21B10/44; E21B10/46; E21B10/62
Foreign References:
| JP6601897B1 | 2019-11-06 | |||
| JP2004092101A | 2004-03-25 | |||
| JP2002339680A | 2002-11-27 | |||
| JPH0716732A | 1995-01-20 | |||
| JP3085847U | 2002-05-24 | |||
| JPH0169893U | 1989-05-09 | |||
| JPS5796278U | 1982-06-14 | |||
| US20160230469A1 | 2016-08-11 | |||
| JP2002339680A | 2002-11-27 |
Attorney, Agent or Firm:
IRIFY INTERNATIONAL PATENT FIRM (JP)
Download PDF: