| 摘要 |
PROBLEM TO BE SOLVED: To provide a differential piston, securing the supply of a working fluid to a pressure chamber without an expensive detour piping. SOLUTION: This differential piston 1 includes: a first part extending vertically to the moving direction B; and a second part 3 extending in the moving direction B. A first pressure chamber 8 is assigned to a first effective piston face 4 of the first side 5 of the first part 2, and a second pressure chamber 9 is assigned to a second effective piston face 6 of the second side. They can be respectively pressurized by a working fluid to which pressure is applied through at least one fluid material passage 10. 11, 12. At least the first or second pressure chamber 8, 9 is defined by at least part of the second part 3. At least one fluid material passage 10, 11, 12 can be functionally connected to at least one of the pressure chambers 8, 9 through a pressure material guide passage 13. COPYRIGHT: (C)2008,JPO&INPIT
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