Abstract: A drive device comprises a fluid driven drive (2), which defines a drive space (8), in which at least one drive piston (14) is located which is able to be linearly shifted by fluid actuation and is kinematically coupled with an output drive part (17). Furthermore there is a position regulator (3) which is responsible for setting the position of the at least one drive piston (14), such regulator having a electronic regulation circuitry (26) and a valve means (27) and being a component of a regulator cartridge (28) which is inserted as a unitary assembly from the side, which is axially opposite to the drive space (8), through an installation opening into a accommodating space (25) defined by an integral extension of the drive housing (4) made in one piece therewith and axially in sequence with the drive space (8).

Abstract: A drive cylinder comprising a cylinder barrel (3) extending between two cylinder heads (2a and 2b) and a plurality of ties (13) distributed about the outer periphery of the cylinder barrel (3) and bracing the cylinder heads (2a and 2b). Of these of ties at least one is constituted by a profile part (26) which extends in the peripheral direction (14) of the cylinder barrel (13) some distance along its outer periphery and whose profile provides means for the implementation of at least one additional function.