| 摘要 |
PURPOSE:To make the control of the feed amount easy by forming a feed apparatus with such a cam that a feed material fed between the first and the second pistons is carried away to a fluid duct by means of the pump action due to the reciprocation of both pistons. CONSTITUTION:While the first and the second cam grooves 17A, 17B are rotated in the direction shown in an arrow and rotated to a point (d) from a point (b), the second piston 7B is made to a stopped state in an advance limit point because the second cam groove 17B is specified in the radius. On the other hand, the first piston 7A is slowly advanced and reached to a point (c) and since the radius of the cam groove 17A is same in the interval up to the point (d) from the point (c), the first piston 7A is made to the stopped state together with the second piston 7B in the advance limit point and a powdery medicine 22 incorporated between the pistons is completely discharged to a fluid duct 2 within this period. |
