Title:
VERTICAL DIRECTION WATER PERMEABILITY TEST DEVICE EQUIPPED WITH INTRUSION DISTANCE DECISION MECHANISM OF UNAGITATED SAMPLE
Document Type and Number:
Japanese Patent JP3772880
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a vertical direction water permeability test device equipped with an intrusion distance decision mechanism of an unagitated sample taken in.
SOLUTION: The intrusion distance decision mechanism provided with an intrusion distance decision mechanism of a water permeation structure at the vicinity of the top end of an inner tube for taking in the unagitated sample comprises a unit pipe fixed to the inside of the inner pipe, an upper spacer stored in the unit pipe, a lower spacer having the bottom with the water permeable structure stored in the unit pipe by making an elastic body intervene between the elastic body placed between the upper spacer and the upper end section of the unit pipe and the upper spacer and a touch sensor operated by a displacement transfer rod telling the displacement of the upper spacer. The touch sensor is connected with a receiving device installed on the ground with a signal cable.
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Inventors:
Tomohide Oshita
Masaji Aoki
Takaaki Shimizu
Kunimitsu Mori
Kazuyuki Inui
Takenaka Yasuaki
Naoshi Ito
Tadashi Yoshida
Masaji Aoki
Takaaki Shimizu
Kunimitsu Mori
Kazuyuki Inui
Takenaka Yasuaki
Naoshi Ito
Tadashi Yoshida
Application Number:
JP2003380358A
Publication Date:
May 10, 2006
Filing Date:
November 10, 2003
Export Citation:
Assignee:
TAKENAKA CORPORATION
Tokyo Soil Research Co., Ltd.
Tokyo Soil Research Co., Ltd.
International Classes:
E02D1/00; E21B25/00; (IPC1-7): E02D1/00; E21B25/00
Domestic Patent References:
| JP1131432A | ||||
| JP3081492A |
Attorney, Agent or Firm:
Masahiko Yamana