Abstract: In a robot area monitoring device, in which at least one area of a rotary movement about at least one robot axis is monitored, initiators cooperating with part annular cams arranged coaxially to the axis to be monitored are provided, the initiators being connected to an evaluating device.

Abstract: A plurality of spike-like projections A, B risen at an obtuse angle, at an acute angle or at right angles in a rotational direction of a metallic rod 1 are formed on an inner peripheral surface of the metallic rod 1 by plastic processing.

Abstract: A fuel-operated air heater (1) is disclosed, especially an air heater for automobiles that is operated independent from the motor. The inventive heater comprises a burner (2), a combustion chamber (3) and a heat exchanger (4). Hot air (5) is circulated through the combustion chamber (3) in a cup-shaped heat exchanger having a bottom that is closed on the inlet side and a hot air blower (10). The heat exchanger is also fitted with an overheat sensor (8) and a flame sensor (9) to monitor or detect overheating of the air heater during operation and the formation of flames during starting by means of a control device (6) and optionally to limit overheating or to disconnect the air heater. The overheat sensor (8) is mounted as a hot air temperature sensor in the area adjacent to the blower in the heat exchanger (4), especially with no wall contact in the hot air flow (5).

Abstract: A hydraulic drive unit is disclosed which can prevent the occurrence of cavitation at the time of turning OFF of a hydraulic motor without greatly modifying the circuit configuration and the entire system and which, as a result, can improve the deceleration feeling of the hydraulic motor and prevent the occurrence of a low noise.

Abstract: A plant and a process for crushing and mash production is provided wherein the raw material to be processed is broken up and mashed in a mill system. Prior to the mill system (1) being filled with the material (6) to be crushed the mill system is filled with an inert gas from a gas reservoir (13) so that the atmospheric oxygen in the mill system (1) is substantially displaced. After the mill system (1) has been filled, the latter is sealed in substantially gas-tight manner and the raw material (6) is ground and mashed in, subject to exclusion of atmospheric oxygen.

Abstract: According to the invention, an Ethernet system and method of using an Ethernet system is provided including a network side device (a hub/switch/concentrator), and a plurality of end devices (either a standard end device powered locally or a system powered device), connected to the hub/switch. The system powered devices have circuitry for indicating the system power need to the hub, which has a power source for selectively supplying system power over the Ethernet. A stimulus device associated with the network device sends a stimulus signal over the network connection lines during a detection phase. The need for power is signaled by an indication device associated with the system powered end devices, providing an indication signal in response to the stimulus signal.

Abstract: A sheet such as paper or a hard film can be fed accurately in an intended direction while positively holding the sheet merely by applying plastic processing to a peripheral surface of a metallic rod. A plurality of spike-like projections A, B risen at an obtuse angle, at an acute angle or at right angles in a rotational direction of a metallic rod 1 are formed on an inner peripheral surface of the metallic rod 1 by plastic processing.

Abstract: Charge control agent and toner for developing electrostatic images containing said charge control agent. The active ingredient of the charge control agent is a metal compound obtainable by reacting one or two or more molecules of a compound having a phenolic hydroxy group and one or two or more molecules of a metal alkoxide.

Abstract: A method of aligning a portion of textile fabric, whereby at least two movable gripping elements of a display device are brought alongside one another into contact with and fastened to a front edge of the portion of fabric and the gripping elements are moved substantially parallel to the surface of a display surface until the portion of fabric is laid out with one side flat on the display surface. In this case, the feed rate of the independently controllable gripping elements (2a, 2b) is so selected that the alignment of the portion of fabric (4) is variable by a feed difference (d, v) between the gripping elements (2a, 2b).

Abstract: A shifting device is disclosed for automatic transmissions of motor vehicles with a selector lever, which is pivotable around at least one axis and by which the gears defined by the transmission of the motor vehicle can be selected. A shift position of the selector lever is associated with each gear. An actuator cooperates with a locking member, which is pivotable around an axis. The locking member is pivotable by the actuator around the axis and has an engaging contour corresponding to the particular shift position of the selector lever on the side facing the selector lever. The selector lever can thus be locked in each shift position.

Abstract: The present invention pertains to the coordination in good register of cylinders of a web-fed rotary printing press which print on a web, wherein a first cylinder printing on one side of the web is driven by a first motor and a second cylinder printing on the same side of the web is driven by a second motor and the angular position of the second cylinder is coordinated with the first cylinder in good register by a controller. At least one disturbance variable (v) is sent to a command variable (u2.Soll) for the motor controller of at least the second cylinder to compensate a register deviation (Y12) of the second cylinder from the first cylinder, which register deviation is typical of the said disturbance variable (v).

Abstract: The gap adjusting device for nipping rollers is provided with one roller rotatably provided at a prescribed position and the other movable roller. The nipping rollers are adapted so that the other roller is capable of forcing a paper web passing between the two rollers onto the one roller. A nipping-roller gap adjusting device includes a pair of supporting arms, one end of each of the supporting arms being swingably supported and the other end thereof rotatably supporting the other roller. A pressing force imparting device gives to the support arms a force working in such a direction that causes the other roller to approach the one roller and which, at the same time, can adjust the magnitude of the force. A minimum gap setting device can set a minimum gap between the one roller and the other roller. A gap adjusting device adjusts the size of a gap between the one roller and the other roller. A fixed frame member rotatably supports the one roller. The gap adjusting device is mounted on the fixed frame.

Abstract: An artificial honeycomb for hives with a body created from plastic material. The body has a multiplicity of hexagonal small cells, on one or both sides of a dividing film. The dividing film acts as a common base for all the small cells. The hexagonal small cells on one side of the dividing wall may be off-set with respect to the small cells on the other side of the dividing wall. The hexagonal small cells may be inclined horizontally. The honeycomb structure may be equipped with a border or an integral or fitted on perimeter frame. A substance compatible with the bees and one attractive to them may be applied to the small cells.

Abstract: A sewing device (1) is provided with a programmable electronic control system (4) for sewing folds and tucks. Such that format-dependent parts (guide tongue, pressure pad) can be eliminated at the time of a change of the seam program the use of a guide tongue is eliminated that depends on the form of the seam and of a format-dependent pressure pad. The feed of the fabric is performed only with a folding tool (5) with straight folding edge and the holding and guiding of the fabric during the sewing operation using a straight pressure pad (7). The electronic control system (4) can be programmed such that the desired seam course is obtained exclusively by the superimposition of longitudinal and transverse movements of the pressure pad (7). Parameters (1′-7IV) that determine the seam course are preferably entered in a graphics-supported manner.

Abstract: A system for sound diffusion, particularly at low and infra-low frequencies in rooms used for the reproduction of music and speech including at least one large horn enclosure and an architectural structure with a continuous or intermittent “multi-hemicylindrical” surface. The surface covers the walls of the room, for the diffusion/reflection of the sound in a broad spectrum of frequencies and with absorption that is adjustable at least at the low frequencies.

Abstract: A main data memory is provided in a network device and includes a plurality of buffers for storing data packets. A plurality of descriptors, or pointers, point to the individual buffers. A status of the descriptors is stored in a descriptor reference memory. The status information includes whether the descriptors are in an active or free state, and an indication of copies of the descriptors in the transmit queues. A descriptor free pool includes a list of the descriptors in the free state.

Abstract: A sewing machine with a light barrier used to detect the edge of a workpiece has an optical light guide (17) connected to the light source (15). The optical guide (17) is arranged in the thread guide hook (12). The thread guide hook (12) is fastened to the front side of the head (4) of the housing and is designed as a small tube for this purpose.