| 摘要 |
<p>PROBLEM TO BE SOLVED: To constantly attain stable pump efficiency by automatically discharging bubble produced in an oil chamber. SOLUTION: A single piston chamber 5 and two oil chambers 4A, 4B are provided in parallel to each other on pump casing 22 to be installed practically horizontally. A piston 8 is accommodated in the piston chamber 5 and two rams 9A, 9B, moving back and forth by the oil chambers 4A, 4B are provided in series on the piston 8. The ceilings of the oil chambers 4A, 4B formed with a taper are provided with a slant slanting with respect to the axis of the rams 9A, 9B and discharge holes 31A, 31B for discharging oil from the position higher than the slant, and the discharge holes 31A, 31B are connected to oil discharge holes provided on the upper part higher than the discharge holes 31A, 31B.</p> |
