Abstract: A piston-cylinder unit including a piston that is fluid pressure supported and movable in a linear manner in a cylinder, wherein the cylinder, a face wall of the piston and a face wall of the cylinder define a compression cavity which is at a minimum size in a portion of a top dead center of the piston, wherein the compression cavity is connected in a fluid transferring manner with a bearing gap which is formed between a cylinder inner circumferential wall and a piston outer circumferential wall, wherein a plurality of fluid outlet nozzles are arranged in at least one cross-sectional plane of the cylinder in the cylinder inner circumferential wall along a circumference, which fluid outlet nozzles open into the bearing gap and are connected with a supply conduit for a pressurized fluid.

Abstract: A gas pressure bearing element including a housing element with recesses, wherein the housing element is closed by a cover, wherein the recesses are defined by rib shaped intermediary walls and/or other island shaped protrusions and define first intermediary spaces between the intermediary walls and/or the island shaped protrusions, wherein the cover is formed in sections by a cured encasement compound provided with an open pore reinforcement mat, wherein the encasement compound has a flat surface that is processed after curing and forms a bearing surface for the gas pressure bearing element, wherein the bearing surface includes a plurality of gas outlet nozzles which are formed by micro holes penetrating the cover, and wherein the micro holes are provided at locations under which the first intermediary spaces are arranged below the cover, which first intermediary spaces form channels for a pressurized gas supply for the gas outlet nozzles.

Abstract: A linear motor including a stator including electrical coils; a runner including permanent magnets; and a back iron device, wherein the runner is arranged between the stator and the back iron device and offset from the stator and the back iron device, wherein the runner is moveable relative to the stator and the back iron device; wherein the permanent magnets are arranged in a section of the runner which section is provided between the stator and the back iron device, wherein the runner is gas supported relative to the stator and/or relative to the back iron device through a gas pressure bearing, wherein the runner is provided with inner channels which are in fluid connection with a pressurized gas supply device and wherein the gas outlet nozzles are in fluid connection with an interior of the channels, wherein the gas pressure bearing includes at least a first bearing surface.

Abstract: A device having a directly driven rotating body (1), its circumference (11) being radially seated on radial bearings (4, 4?) in relation to the stationary body (2), and its at least one first face side (10) being axially seated in relation to the stationary body (2), wherein aerostatic bearings (5, 5?, 5?) are provided for the axial support mounting, characterized in that the first face side (10) has an annular magnet arrangement (32), which is configured coaxially to the axis of rotation (X) of the rotating body (1), and that the stationary body (2) has at least one electric coil arrangement (30), which is located opposite the annular magnet arrangement (32) in the axial direction and which forms together with the annular magnet arrangement (32) the components of an electrical direct drive (3) for the rotating body (1).

Abstract: A piston/cylinder unit comprising a cylinder, a piston which reciprocates in the axial direction of the cylinder between first and second piston positions, and a fluid bearing provided between the piston and the cylinder which supports the piston such as to be axially displaceable in the cylinder and defines the piston-side bearing surface, enclosing the circumference of the piston at least over a part of the axial extension of the piston, whereby the fluid bearing comprises a number of outlet nozzles for the fluid arranged in the inner circumferential wall of the cylinder. The outlet nozzles are arranged such that when the piston is in the second position, first outlet nozzles provide the front or middle region of the piston-side bearing surface relative to the piston longitudinal extension and second outlet nozzles provide the middle region of the piston side bearing surface with pressure fluid.

Abstract: A device having a directly driven rotating body (1), its circumference (11) being radially seated on radial bearings (4, 4?) in relation to the stationary body (2), and its at least one first face side (10) being axially seated in relation to the stationary body (2), wherein aerostatic bearings (5, 5?, 5?) are provided for the axial support mounting, characterized in that the first face side (10) has an annular magnet arrangement (32), which is configured coaxially to the axis of rotation (X) of the rotating body (1), and that the stationary body (2) has at least one electric coil arrangement (30), which is located opposite the annular magnet arrangement (32) in the axial direction and which forms together with the annular magnet arrangement (32) the components of an electrical direct drive (3) for the rotating body (1).

Abstract: An axially driven piston/cylinder unit comprising a cylinder, a piston being movable between first and second piston positions in the axial direction of the cylinder, a fluid bearing between the piston and the cylinder and defining a bearing surface on the piston side enclosing said piston over a part of the axial length of the piston, and a drive element mechanically-connected to the piston by means of a piston rod. The piston rod is embodied to permit and compensate for a radial offset, or an inclination between the cylinder axis and the longitudinal axis, defining the movement direction of the drive element. The piston rod is provided with a first drive-side joint section, the piston rod is also provided with a second piston-side joint section and that the second piston-side joint section is provided in the rear region of the piston, away from the piston crown.

Abstract: A piston/cylinder unit comprising a cylinder, a piston which reciprocates in the axial direction of the cylinder between first and second piston positions, and a fluid bearing provided between the piston and the cylinder which supports the piston such as to be axially displaceable in the cylinder and defines the piston-side bearing surface, enclosing the circumference of the piston at least over a part of the axial extension of the piston, whereby the fluid bearing comprises a number of outlet nozzles for the fluid arranged in the inner circumferential wall of the cylinder. The outlet nozzles are arranged such that when the piston is in the second position, first outlet nozzles provide the front or middle region of the piston-side bearing surface relative to the piston longitudinal extension and second outlet nozzles provide the middle region of the piston side bearing surface with pressure fluid.

Abstract: A bearing arrangement for the support of tensile forces, in particular for the suspended mounting of a mass, in order to simulate the weightlessness of the latter in a gravitational field, has a first bearing element comprising at least one magnet and a second, metallic bearing element, to which the first bearing element is attracted magnetically. At least one of the bearing elements has, in its bearing surface, gas outflow nozzles which are loaded by a compressed gas, so that a gas stream flowing out of the gas outflow nozzles forms a gas cushion between the bearing elements attracting one another due to the magnetic force, said gas cushion keeping the bearing elements at a distance from one another. The magnetic attraction force between the bearing elements is, in this case, equal to the sum of the tensile force exerted by the mass and the first bearing element and of the repulsion force of the gas cushion.