Abstract: A device provides a pneumatic pressure medium via a pressure medium source for at least one pressure medium chamber in particular of a vehicle seat of a motor vehicle. The device has a pressure medium source for the pressure medium and a pressure medium line disposed between the pressure medium source and at least one valve. At least one connection for a pressure medium line is disposed between the valve and the pressure medium chamber. A control module actuates the pressure medium source and the at least one valve. The device further has a housing. A motor of the pressure medium source is located between the control module and a pump of the pressure medium source.

Abstract: A device provides a pneumatic pressure medium via a pressure medium source for at least one pressure medium chamber in particular of a vehicle seat of a motor vehicle. The device has a pressure medium source for the pressure medium and a pressure medium line disposed between the pressure medium source and at least one valve. At least one connection for a pressure medium line is disposed between the valve and the pressure medium chamber. A control module actuates the pressure medium source and the at least one valve. The device further has a housing. A motor of the pressure medium source is located between the control module and a pump of the pressure medium source.

Abstract: To produce a bladder which can be filled with pressure medium, a one-piece hose-like bladder body is provided with a casing surface which extends from a first end portion to a second end portion and encloses a bladder chamber. Furthermore, a pressure medium line is introduced into the bladder chamber in particular through the first or the second end portion. Finally, at least one joint connection is produced for closing the open end portions so as to form a bladder chamber sealed against pressure medium. By using a hose-like bladder body as the base body for the bladder, the manufacturing complexity for production is minimized.

Abstract: A pressure medium distributor, for a pneumatic adjustment arrangement of a vehicle seat. The pressure medium distributor has a distribution element including at least one first and one second film connected to each other along a connection seam in order to form a first and at least one second pressure medium chamber. The pressure medium distributor has a first pressure medium inlet line to admit the pressure medium into the first pressure medium chamber, and at least one second pressure medium inlet line to admit the pressure medium into the at least one second pressure medium chamber. At least one first pressure medium outlet line is provided for discharge of the pressure medium from the first pressure medium chamber, and at least one second pressure medium outlet line is provided for discharge of the pressure medium from the second pressure medium chamber creating a pressure medium distributor which is flexible.

Abstract: The invention relates to a method for metering a fluid medium by means of a metering device in the form of a piston pump having a cylinder (Z) and a movable piston (3), wherein the cylinder (Z) and the piston (3) form a working space (A), characterized in that in a first method step a given filling quantity of the fluid medium is conveyed into the working space (A), wherein the filling quantity is greater than the predefined quantity to be metered, and in that in a further method step the piston (3) reduces the size of the working space (A) to such an extent that the quantity to be metered remains in the working space (A), wherein at the same time a valve (18, 18?) is opened so that the gas volume separated in the working space (A) and/or the excess fluid medium can flow out of the working space (A) through the piston, wherein to this end the piston (3) has at least one axially running through-channel (17, 17?) which is connected to a return line (19, 19?), and at least the controllable valve (18, 18?) and

Abstract: A pressure medium distributor, for a pneumatic adjustment arrangement of a vehicle seat. The pressure medium distributor has a distribution element including at least one first and one second film connected to each other along a connection seam in order to form a first and at least one second pressure medium chamber. The pressure medium distributor has a first pressure medium inlet line to admit the pressure medium into the first pressure medium chamber, and at least one second pressure medium inlet line to admit the pressure medium into the at least one second pressure medium chamber, At least one first pressure medium outlet line is provided for discharge of the pressure medium from the first pressure medium chamber, and at least one second pressure medium outlet line is provided for discharge of the pressure medium from the second pressure medium chamber creating a pressure medium distributor which is flexible.

Abstract: Apparatus and methods for providing a pre-determined axial thrust force profile for use in a rotating machine that includes a magnetically permeable rotor with first and second surfaces and a generally perpendicular shaft is disclosed. One or more bearings support the shaft and a coil induces flux in the rotor. First and second pole pieces disposed adjacent to the first and second surfaces define first and second gaps. A series magnetic circuit including the pole pieces, the gaps and the rotor carries flux generated by current flowing in the coil. Pole pieces and gaps provide substantially similar reluctance in both gaps. Magnetic saturation characteristics of a series magnetic circuit may provide a pre-determined axial force profile as a function of coil current. A first magnetic saturation characteristic may provide a maximum axial force at a first current magnitude. A second magnetic saturation characteristic may provide a lower axial force at a current greater than the first current.

Abstract: The invention relates to a method for metering a fluid medium by means of a metering device in the form of a piston pump having a cylinder (Z) and a movable piston (3), wherein the cylinder (Z) and the piston (3) form a working space (A), characterised in that in a first method step a given filling quantity of the fluid medium is conveyed into the working space (A), wherein the filling quantity is greater than the predefined quantity to be metered, and in that in a further method step the piston (3) reduces the size of the working space (A) to such an extent that the quantity to be metered remains in the working space (A), wherein at the same time a valve (18, 18?) is opened so that the gas volume separated in the working space (A) and/or the excess fluid medium can flow out of the working space (A) through the piston, wherein to this end the piston (3) has at least one axially running through-channel (17, 17?) which is connected to a return line (19, 19?), and at least the controllable valve (18, 18?) and

Abstract: Apparatus and methods for providing a pre-determined axial thrust force profile for use in a rotating machine that includes a magnetically permeable rotor with first and second surfaces and a generally perpendicular shaft is disclosed. One or more bearings support the shaft and a coil induces flux in the rotor. First and second pole pieces disposed adjacent to the first and second surfaces define first and second gaps. A series magnetic circuit including the pole pieces, the gaps and the rotor carries flux generated by current flowing in the coil. Pole pieces and gaps provide substantially similar reluctance in both gaps. Magnetic saturation characteristics of a series magnetic circuit may provide a pre-determined axial force profile as a function of coil current. A first magnetic saturation characteristic may provide a maximum axial force at a first current magnitude. A second magnetic saturation characteristic may provide a lower axial force at a current greater than the first current.

Abstract: A diaphragm pump, in which a fluid moves at least a first piston of a first piston/cylinder system back and forth, the first piston being mechanically connected to at least one other hydraulic piston and the hydraulic piston driving at least one diaphragm by a hydraulic medium.

Abstract: The invention relates to a valve for alternately filling two working chambers (A, B) of a piston-cylinder system (1, 2, 3) of a pump with a fluid, wherein the valve has two valve pump outlets (PA, PB), for connection to the working chambers (A, B) of the pump and has a valve control element (64) that is displaceably arranged in a space of a valve housing (60, 61, 76, 77) and can be movably driven backwards and forwards between two end positions by a fluid, wherein the valve control element (64) has control ducts (67, 82, 83, 84) that co-operate with housing ducts (51, 71, 72, 80, 81) arranged in the valve housing (60) wherein the first valve pump outlet (PA) is connected to the housing ducts (71, 80) and the second valve pump outlet (PB) is connected to the housing ducts (72, 81), wherein in a central region between the two end positions the valve pump outlets (PA, PB) are connected to one another via control ducts (82, 83, 84) of the valve control element (64).