| 摘要 |
A circuit having a first pump port, a second pump port, a first cylinder por t, a second cylinder port, and a network interconnecting the first pump port, the second pump port, the first cylinder port, the second cylinder port, the network being configured such that in response to fluid pressure greater than a first threshold at the first pump port, the second pump port is connected to the second cylinder port and in response to fluid pressure greater than a second threshold at the second pump port, the first pump port is connected to the first cylinder port.
|
