US Patent 7213503 Compressible fluid pressure actuator

An inner space connected to a power source and an inner space connected by way of a pressure loss part with respect to the flow of compressible fluid are provided, thereby obtaining effects similar to when the volume occupied by the compressible fluid with respect to the entire inner space is reduced when the pressure of the pressure source is rapidly changed, and effects similar to when the entire inner space is one space when static load is applied from the outside.