| 摘要 |
A multi step cylinder is provided that the overlapping configuration and multi-control of cylinder are exact and the total length is short in the maximum compression. A multi step cylinder comprises a first port(6) for the rod extension formed in the head block(20), and a second port(12) and a third port(13) for the rod extension which are formed in the rod block(26) of tube. The second rod(8) is inserted into the inner room of the first rod. The fourth port(14) for the rod compression is formed in the tail rod block(28) of the second rod. |
