| 摘要 |
<p>Fluid supply system for a double acting fluid drive mechanism having first and second drive chambers, the system including a pump whose delivery is connected by a first conduit to the first chamber, a second conduit connecting the second chamber to a reservoir and including a one-way valve permitting flow only to the reservoir, a third conduit coupled to the second conduit, by-passing the one-way valve and including a flow limiter, a fourth conduit connected to the first conduit and to the flow limiter, which latter comprises a discharge valve operable to maintain pressure in the third conduit upstream of the discharge valve and an adjustable valve between the second chamber and the discharge valve operable to control the pressure delivered by the second chamber in response to pressure in the fourth conduit.</p> |
