Title:
THRUSTING BODY
Document Type and Number:
Japanese Patent JP3153128
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To efficiently drive a thrusting body in a simple thrusting control.
SOLUTION: This thrusting body is constituted of a thrusting main body 3 equipped with a thrusting head 1 provided with a pressure-receive face F tilting against the axial center P of the head and a plurality of thrusting pipes 2 connected to the rear side of the thrusting head 1. A plurality of bending connection parts R1 and non-bending connection parts R2 are formed at every longitudinal distance on the thrusting main body 3. Respective bending connection parts R1 are formed so as to be bendable only around one bending axial center X extending along the radial direction of the thrusting main body 3. And a positioning structure 13 is provided so that the mutual bending axial centers X of both bending connection parts R1 positioned at both sides of the straight connection parts R2 show parallel postures to each other, in accordance with the connecting works of the straight connection parts R2 to the bending connection parts R1.
Inventors:
Teruo Kabeuchi
Masaya Hattori
Takashi Sogawa
Yukishige Yamada
Yoshiaki Okuyama
Masao Nakagawa
Shiro Sugiyama
Masaya Hattori
Takashi Sogawa
Yukishige Yamada
Yoshiaki Okuyama
Masao Nakagawa
Shiro Sugiyama
Application Number:
JP15239096A
Publication Date:
April 03, 2001
Filing Date:
June 13, 1996
Export Citation:
Assignee:
Kubota Corporation
International Classes:
E21D9/06; E21B4/02; E21B7/06; E21B7/08; E21B7/26; E21B17/05; E21B17/20; (IPC1-7): E21D9/06
Domestic Patent References:
| JP842286A |
Attorney, Agent or Firm:
Shuichiro Kitamura