Two-hole core drilling machine
AssigneeEgun Co., Ltd.
InventorsSung Jun Lee, Chae Mun Lee
Life of this patent
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Abstract
A two-hole core drilling machine of the invention includes a body, a vertically reciprocating carriage vertically reciprocably mounted to the body, a fixing plate coupled to one side surface of the carriage, to rotatably support a drive shaft of a motor, a pivoting plate fastened to the fixing plate under a condition that a pivot angle of the pivoting plate is changed, a moving plate fastened to the pivoting plate under a condition that a length of the moving plate from the pivoting plate is varied, a belt or chain mounted between a drive pulley coupled to the drive shaft and a driven pulley coupled to a driven shaft rotatably mounted to the moving plate, a first core bit coupled to the drive shaft, and a second core bit coupled to the driven shaft.
Claims9
A two-hole core drilling machine comprising:
- a body;
- a vertically reciprocating carriage vertically reciprocally mounted to the body;
- a fixing plate coupled to one side of the carriage, to rotatably support a drive shaft of a motor;
- a pivoting plate fastened to the fixing plate under a condition that a pivot angle of the pivoting plate is changed;
- a moving plate fastened to the pivoting plate under a condition that a distance of the moving plate from the fixing plate is varied, a driven shaft being rotatably mounted to the moving plate;
- a gear train coupled between the drive shaft and the driven shaft, to transmit rotation force of the drive shaft to the driven shaft;
- a first core bit coupled to the drive shaft;
- and
- a second core bit coupled to the driven shaft.
Dependencies are inferred from the claim text.