a fluid - powered cylinder for displacing an object with respect to a support surface is disclosed . the fluid - power cylinder includes a fabric enclosure having ends fastened to two end caps and forming an expandable and contractible chamber therein . the chamber has a port for selectively disposing an incompressible fluid in the chamber . the chamber is adapted to displace the object to a first position with respect to the support surface and to displace the object to a second position with respect to the support surface .