| 摘要 |
<p>1480693 Fluid-pressure servomotor systems EISENWERK WESERHUETTE AG 18 Sept 1975 [20 Dec 1974] 38331/75 Heading G3P Hydraulic pressure in a duct 4 for operating a valve is regulated by a solenoid actuated valve 13 co-operating with a seat 9 between an inlet 2 and a second outlet 7; a spring-loaded exhaust valve 8 and a blind bore 15 opposite the inlet 2 prevent air being released from the hydraulic fluid.</p> |
