Title:
CORE COLLECTING DEVICE
Document Type and Number:
WIPO Patent Application WO/2016/051459
Kind Code:
A1
Abstract:
Provided is a core collecting device for which size and weight increases can be suppressed even when being provided with a tip clearance regulating mechanism. A core collecting device (1) comprises: an outer tube (2) that has a bit on the distal end; an inner tube (3) that is inserted into the outer tube and regulates corotation; a core acquiring means (4) that is attached to the distal end of the inner tube; an exterior supporting body (5) that is connected to the upper end of the outer tube; an interior supporting body (6) that is connected to the upper end of the inner tube by being screwed into the exterior supporting body; and an advancing and retracting operating unit (10) that advances and retracts the inner tube with respect to the outer tube in the axial direction (X). The advancing and retracting operating unit has a ring member (11) that surrounds the interior supporting body and that can be rotated from outside of the exterior supporting body, and a key member (12) that transmits the rotation of the ring member to the interior supporting body. The key member is formed so that the measurement in the axial direction is no more than the measurement in the radial direction.
More Like This:
Inventors:
YAMADA NAOTO (JP)
MIYAMOTO TETSUOMI (JP)
MIYAMOTO TETSUOMI (JP)
Application Number:
PCT/JP2014/075879
Publication Date:
April 07, 2016
Filing Date:
September 29, 2014
Export Citation:
Assignee:
MAIKAI CO LTD K (JP)
International Classes:
E21B25/00
Foreign References:
| JP2007231630A | 2007-09-13 | |||
| JPS49120803A | 1974-11-19 | |||
| JPS4861301A | 1973-08-28 | |||
| JPS4414081B2 |
Attorney, Agent or Firm:
TAKINO, Hideo et al. (JP)
Hideo Takino (JP)
Hideo Takino (JP)
Download PDF: