| 摘要 |
<p>PURPOSE:To simplify a boosting mechanism by housing valve bodies to be switched by means of pressure in the end part of the ram of a booster piston. CONSTITUTION:A booster piston 8 is fitted in a second cylinder 2, while valve bodies 11, 15, 17 are housed in the end part of the ram 9 of the booster piston 8. A boosting mechanism can be simplified accordingly, since it is not necessary to provide the valve bodies 11, 15, 17 separately.</p> |
