| 摘要 |
<p>A fluid-operated apparatus includes a rotary member integral with the fluid-operated rotary body in a stationary member adjacent thereto in end face confronting position with respect to the rotary member. A pair of circumferential grooves within the end face of the stationary member carry respectively, an annular sealing piston for controlling check valve actuation within the rotary member and an annular sealing piston for controlling ventilation of the fluid-operated rotary body by opening the check valve. Fluid passage project through the annular piston and communicate to the end face of the rotary member. The rotary member is provided with check valves within passages corresponding to the passages within the actuator annular piston for controlled supply of compressed fluid to the fluid-operated rotary body. The bores within the rotary member which carry the check valves and form a portion of the fluid passage leading from the stationary member to the fluid-operated rotary body and carry ventilation control pistons operatively disposed with respect to the check valves which ventilate pistons are fluid connected by passages within the rotary member leading to the annular pistons within the stationary member permitting selective ventilation of the fluid-operated rotary body by applying fluid pressure to the ventilation pistons.</p> |
