Abstract: The invention concerns pneumatic actuators for valves comprising a body closed by head flanges, two pistons moving in said body in opposite directions, an output shaft that turns actuated by the pistons, and a stop device on each head flange to limit the stroke of the pistons when they move away from each other towards the head flanges. On at least one side of the actuator body an adjusting device (22) is provided which includes stop means (26, 27) at varying distances from each other in a direction parallel to the movement of the pistons and arranged in a position to intercept and limit the stroke of the pistons when the latter move towards each other.

Abstract: A method and device (1) are provided for applying laminated tapes (2, 3) with an adhesive tape (2) and a cover tape (3) on a surface (4). The tape application device (1) includes a frame (5), a tape winder (8) for the laminated tape (2, 3), a tape winder (9) for the pulled-off cover tape (3), a tape guide (14) and a pressure-exerting device (18) for pressing the adhesive tape (2) onto a surface (4). During application, the cover tape (3) is at some parts detached and guided away from the adhesive tape (2), wherein the adhesive tape (2) can be severed at the detachment point and can be pressed onto the surface (4) with two closely adjacent pressing elements (19, 20).

Abstract: A double temperature sensor with a receiving element for measuring a near-surface temperature of the ambient air and the skin surface. The double temperature sensor with a receiving element includes an insulating block, two temperature sensors and a receiving element. At least the receiving element (8) and/or the insulating block (4) are designed in terms of the material structure such that the horizontal heat conduction is low compared to the vertical heat conduction.

Abstract: A process is provided for operating a thermotherapy device with a bed surface (10) and with discharge channels for conditioned air in the longitudinal direction of the bed surface (10) and on the foot side (3) thereof as well as with an exhaust unit (11) above the bed surface (10). The air being discharged from the discharge channels is directed towards the exhaust unit (11) such that the discharge angle ? changes continuously as a function of the distance between the exhaust unit (11) and the site of the discharge flow from the discharge channels, the elevation angle ? changes continuously as a function of the distance between the exhaust unit (11) and the site of the discharge flow from the discharge channels, and the value of the velocity of the discharge flow changes continuously as a function of the site of the discharge flow from the discharge channels.

Abstract: A method for producing a casting die by simple work without requiring any high work skill in which the working days required for producing the casting die can be shortened greatly. A die model suitably employed in this production method, an NC processing system and a processing robot are also provided.

Abstract: A gas sensor with a housing (1, 11) has an optical signal transmission to the environment of the gas sensor (10). At least one light-emitting diode (3) is arranged in the housing (1, 11) on the inner side of a disk (4) that is transparent to light. At least one optical light guide (5), for coupling in the light of the light-emitting diode (3), is arranged in the housing (1, 11) on the outer side of the disk (4) that is transparent to light. The optical light guide (5) extends up to the outer surface (6) of the housing (1, 11).

Abstract: An actuating device is provided for selecting gears of an automatic transmission. The actuating device includes a rotatable actuating element as well as a crank arrangement (9) with stop elements (Mn) for limiting the rotation angle of the actuating element to a total switching angle. The actuating element may assume n switching positions within the total switching angle. The crank arrangement (9) has a separate stop element (Mn), which can be activated in a controlled manner, and a crank area (12, 13) for each of the n switching positions. The crank area (12, 13) comprises at least one crank segment (A, B, C, . . . ), between the end stops of which a stop element (Mn) can assume one of n relative positions, which correspond to the n switching positions. The crank segments (A, B, C, . . . ) are arranged distributed over the total crank angle such that all n relative positions are occupied by the n stop elements (Mn) for each relative switching position (1, 2, 3, . . . ).

Abstract: A method for reducing low frequency noise of a transistor operable at cryogenic temperatures includes a first step in which the transistor is illuminated with a light in a state that the transistor is activated and flowed current by supplying a power at a predetermined temperature, and a second step in which the transistor is operated at the predetermined temperature after the illumination of the light.

Abstract: A gas-mixing device for respirators can be used both in stationary operation and in mobile operation. The gas-mixing device has a storage tank (5), into which compressed air and oxygen can be introduced by dispensing valves (3, 8). In addition, a blower (10), which draws in gas from the environment (11), is connected to the storage tank (5). To dispense gas from the pressurized gas sources (4, 6) by means of the dispensing valves (3, 8), a first operating pressure level is set in the storage tank (5). When changing over to the blower operation, the operating pressure level is lowered to a pressure level adapted to the maximum respiration pressure.

Abstract: A device and a process are provided for uniformly lighting an operating area for performing the lighting of an operating area (2) of a bed (30) by means of a lighting unit (3) such that a selected lighting field (13) is lighted uniformly. The image signals of a camera (7) are sent to an image processing unit (17), in which the image signals are analyzed and the individual lighting elements (6) are switched via the control unit (18). A lighting situation is acquired in the process for initializing and operating this lighting system and a lighting field (13) of interest is selected. The image signals are analyzed during the operation and sent to the control unit (18) in order to switch the lighting elements (6) such that uniform lighting is obtained in the first lighting field (13).

Abstract: The present invention relates to a device and a method for dividing up substrates (2) in wafer form (e.g. wafers), which is used in the semiconductor industry, MST (microstructure technology) industry and photovoltaic industry, whereby improved reliability of the process and lower reject rates are accomplished. This object is achieved according to the invention by using adhesion forces that act between the substrates in wafer form and the devices (1) thereby used.

Abstract: A suspension device (A) comprising a damper (S) and a gas spring (C), the damper (S) comprising a motion transforming mechanism (H) for transforming a relative motion between a vehicle body-side member and an axle-side member into a rotational motion and a motor (M) having a rotor (8) to which the rotational motion is transmitted, the gas spring (C) being interposed between the vehicle body-side member and the axle-side member, in which the motor (M) comprises a hollow casing (9), a partition wall member (16) which forms a rotor chamber (r) within the casing (9), with the rotor (8) being received within the rotor chamber (r), a cylindrical stator (17) disposed between an outer periphery of the partition wall member (16) and an inner periphery of the casing (9), and the rotor (8) held rotatably by the casing (9) within the rotor chamber (r), and the interior of the rotor chamber (6) is brought into communication with the interior of a gas chamber (R) of the gas spring (C).

Abstract: A hydraulic engine bearing for motor vehicles has a fluid-filled working chamber (4) surrounded by a rubber-elastic circumferential wall (3). A compensating chamber (7) is provided which is in connection with the working chamber (4) via an overflow duct (6) in a baffle plate (5) between the working chamber (4) and the compensating chamber (7). Another compensating chamber (10) is connected to the working chamber (4) via a bypass duct (9). The additional compensating chamber (10) is formed from an elastic bellows (11), which is surrounded on its outside by a fixed wall (12) and wherein an intermediate space (13) is arranged between the bellows (11) and the wall (12). The intermediate space can be filled with a compressible medium, preferably air, and the medium can be emptied by means of a switching device, wherein the switching device is formed from at least one non-return valve (14) and at least one on-off valve (15).

Abstract: A joint unit such as for mounting the vehicle control arm of a motor vehicle, is provided with a control arm-side housing (1), in which a pivot pin (2) is mounted pivotably by means of a spheroidal bearing surface (3), wherein the joint unit has a securing unit against the separation of the housing (1) from the pivot pin (2). The securing unit includes a securing bolt (9), arranged within the pivot pin (2) essentially in parallel to the central longitudinal axis of the pivot pin (2) and with a blocking element (12) at a free end. A securing mount (13) is located within the housing (1) or the pivot pin (2) and in this the blocking element (12) is mounted in a contactless manner in the mounted state of the joint unit. The securing mount (13) is part of the securing unit, and the securing bolt (9) is fixed to the component of the joint unit (housing (1) or pivot pin (2)) that is not provided with the securing mount (13).

Abstract: A vehicle seat (1), especially a motor vehicle seat, has at least one lockable pair of seat rails (3) for adjusting various longitudinal positions of the seat, which the vehicle seat (1) can assume in the use position suitable for the transport of passengers. A rail actuation device (12) is provided for unlocking the pair of seat rails (3). At least one lock (5) is provided for locking with the vehicle structure, whereby after unlocking the lock (5), the vehicle seat (1) can be converted from the use position into a nonuse position. A lock actuation device (14) is provided for unlocking the lock (5). A stop (16) is provided which is operative between the pair of seat rails (3) and/or rail actuation (12), on the one hand, and the lock actuation (14) and/or lock (5), on the other hand.

Abstract: A coherent optical receiver includes a 90-degree optical hybrid circuit to which a received signal light is input, I-channel and Q-channel photo detectors to which the outputs of the hybrid circuit are input, a clock extraction circuit which reproduces a clock whose speed is the same as a demodulated signal obtained by demodulating the received signal light and which is synchronized therewith, I-channel and Q-channel sampling circuits which sample the signal outputs from the I-channel and Q-channel photo detectors by use of the clock, and a digital signal processing section which digitally processes the sampled signals, converts them to a digital signal, and outputs the digital signal. The digital signal processing section feeds a phase offset signal detected there back to the clock extraction circuit to thereby control the phase of the clock, and compensates dispersion of light within a fiber and phase fluctuation during free-space propagation.

Abstract: The invention concerns a shearing or gripping tool which comprises a body with a proximal end and a distal end and defining an internal chamber for a drive piston for actuating the shearing or gripping tool which move between an idle and active position in answer to the movements of the piston between the retracted and forward positions. Sensitive elements to detect at least the forward position of the piston in its respective chamber and in the same way the active position of the shearing or gripping tools in order to signal the effective fulfilment of their action, are associated with the proximal part of the body.

Abstract: A self-centering chuck is provided for accurately fixing the position of workpieces on tables. The chuck has a basic body with guide grooves, a threaded spindle with right-handed and left-handed external threads and a centrally arranged groove, two slides screwed onto an external thread each with a clamping jaw each in the head area and with sliding blocks in the foot area. The slides are guided axially in the guide grooves and on the threaded spindle. The threaded spindle is centered in a central piece and can be fixed and locked on the basic body and on the central piece by fastening means guided in the groove. The clamping jaws arranged on the head side on the slides have clamping surfaces on both sides and can be used on both sides. The slides can be screwed on both sides onto left-handed and right-handed external threads of the threaded spindle.

Abstract: The electric cartridge type heater has a continuous central fitting hole (2) for receiving a cylindrical body to be healed in a gap-free manner, an inner metal jacket (1), an outer metal jacket (3) and a healing conductor wound on the circumference of a coil form (8), which is inserted in an annular chamber (4). The coil form has a cylinder wall with holes (10) or ducts (11/1) for receiving ends (12, 13, 15, 16) of the heating wire winding (9). The connecting conductors (18, 19) are led radially to the outside through an opening (20, 20/1) of the outer metal jacket (3) in an axial area which is located away from the two axial ends of the annular chamber (4) and is located between two heating wire windings (9/1, 9/2) or two winding sections (9a, 9b) of the same heating wire winding (9).