| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a rotary bush capable of minimizing the flow of a working fluid. <P>SOLUTION: A rotor 101 is equipped with a rotor inflow port 104, and a work cylinder includes an expansion chamber 111 and a piston 103. The piston 103 is equipped with a piston discharge port 108 and supported so as to be slidable toward the rotor 101. When the ports 104 and 108 are connected mutually, a pressure generator 112 and the piston discharge port 108 are connected to the expansion chamber 111 and the rotor 101. A threshold valve 115 opened automatically when pressure level of the working fluid exceeds a specific threshold value is arranged between the expansion chamber 111 and the piston discharge port 108. <P>COPYRIGHT: (C)2004,JPO |
