Title:
APPARATUS FOR PREVENTING CUT CORE FROM FALLING FOR CORE DRILLS
Document Type and Number:
WIPO Patent Application WO/1998/056552
Kind Code:
A1
Abstract:
An apparatus for preventing a cut core from falling for core drills, capable of carrying out drilling without causing a cut core to fall even during a downward through-hole drilling by a core drill. This apparatus for preventing a cut core from falling for core drills is adapted to apply cutting teeth to a structure of a predetermined thickness of reinforced concrete, stone or asphalt and rotating the cutting teeth around an arbitrary position on the structure, whereby a part of the structure can be taken out as a cylindrical cut core, the apparatus including a fixing unit (10) adapted to be fixed detachably to a position on the surface of the portion of a structure which corresponds to a core to be cut out, a connecting unit (20) fixed to the fixing unit (10), and a suspension unit (30) which is supported in a position close to a rotary shaft of the cutting teeth attached rotatably to a core drill, and which is capable of supporting the connecting unit (20) in suspended state.
Inventors:
ITO HIDEKI (JP)
Application Number:
PCT/JP1997/002053
Publication Date:
December 17, 1998
Filing Date:
June 13, 1997
Export Citation:
Assignee:
ARGUS CORP (JP)
ITO HIDEKI (JP)
ITO HIDEKI (JP)
International Classes:
E21B25/10; (IPC1-7): B28D1/14; E21B25/10
Foreign References:
| JPH05162121A | 1993-06-29 | |||
| JPH07171821A | 1995-07-11 | |||
| JPS6458507A | 1989-03-06 | |||
| JPS5526365A | 1980-02-25 |
Attorney, Agent or Firm:
Nishimori, Koji (Daisan-Kanbara Building 8th floor, 12-14,
Toranomon 1-chom, Minato-ku Tokyo 105, JP)
Download PDF: