Title:
MULTI-BORING CORE DRILLING APPARATUS
Document Type and Number:
WIPO Patent Application WO/2023/013943
Kind Code:
A1
Abstract:
A three-hole boring core drilling apparatus according to the present invention may comprise: a main body part; an elevating carriage mounted on the main body part so as to be able to elevate; a fixed plate coupled to one surface of the elevating carriage to rotatably support a driving shaft of a motor; a rotating plate coupled to the fixed plate by changing the rotational angle; a pair of moving plates movably coupled to either side of the rotating plate; a driving gear, which is coupled to the driving shaft, and a pair of driven gears, which are coupled to a pair of driven shafts rotatably mounted on the pair of moving plates; a pair of moving gears mounted between the driving gear and the pair of driven gears; a first core bit coupled to the driving shaft; and a second core bit and a third core bit coupled to the pair of driven shafts.
Inventors:
LEE SUNG JUN (KR)
LEE CHAE MUN (KR)
LEE CHAE MUN (KR)
Application Number:
PCT/KR2022/010840
Publication Date:
February 09, 2023
Filing Date:
July 22, 2022
Export Citation:
Assignee:
EGUN CO LTD (KR)
International Classes:
B28D1/14; B23B39/16
Foreign References:
| JP2006015479A | 2006-01-19 | |||
| KR101302141B1 | 2013-08-30 | |||
| JPH05269731A | 1993-10-19 | |||
| JP3685523B2 | 2005-08-17 | |||
| KR200278379Y1 | 2002-06-20 | |||
| KR102347538B1 | 2022-01-05 |
Attorney, Agent or Firm:
PARK, Jeong Hwan (KR)
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