Patent ID: 7470268

Claim:
A double cylinder system, comprising: at least one controller being adapted to transmit hydraulic control signals, said controller further comprises: a control cavity; and a first piston within said control cavity, said first piston dividing said control cavity into a first control cavity portion and a second control cavity portion and preventing communication between said first control cavity portion and said second control cavity portion; at least one slave being in fluid communication with said controller and being configured to respond to said hydraulic control signals transmitted by said controller, said slave comprising a slave cavity; and a second piston within said slave cavity, said second piston dividing said slave cavity into a first slave cavity portion and a second slave cavity portion and preventing communication between said first slave cavity portion and said second slave cavity portion; wherein said slave cavity is a part of a modular component selected from the group consisting of an extend module, a rotate module, a bend module, and a grasp module, wherein any one of said modules is capable of being used in combination with any other of said modules; and at least one control line providing hydraulic communication between said first control cavity portion and said first slave cavity portion; and at least one control line providing hydraulic communication between said second control cavity portion and said second slave cavity portion.