Title:
地中ドリリングピラー設置方法及びドリル機
Document Type and Number:
Japanese Patent JP4425290
Kind Code:
B2
Abstract:
Drilling device comprises a pipe hopper (30) which can be axially displaced with a drill pipe (6) opposite a carriage (22). An independent claim is also included for a method for producing a drilling column in the ground using the above drilling device. Preferred Features: The hopper is arranged axially above the drill drive unit (11) and the drill pipe is arranged axially below the drill drive unit. A rotary coupling (60) is arranged between the hopper and the drill pipe to decouple the drill pipe from the hopper.
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Inventors:
Irwin Stetzer
Application Number:
JP2007109994A
Publication Date:
March 03, 2010
Filing Date:
April 19, 2007
Export Citation:
Assignee:
Bauer Maschinen Game Behr
International Classes:
E21B3/02
Domestic Patent References:
| JP64008136B2 | ||||
| JP6032981Y2 |
Attorney, Agent or Firm:
Kenji Yoshida
Jun Ishida
Jun Ishida