Abstract: A transmitting and receiving part of a pulse Doppler radar, in which the transmitting oscillator, by frequency shifting, is at the same time used as a local (reception) oscillator, and the intermediate-frequency reference frequency is generated coherently with respect to the pulse repetition frequency. Since only one high-frequency oscillator is required, the quality of which does not have to meet very high requirements, a low-price pulse Doppler radar can be implemented.

Abstract: There is provided a method of manufacturing Bi-CMOS semiconductor devices in which further comprises the steps of; depositing a polysilicon layer, an oxide film and a nitride film one and another in order to form the emitter and collector of a bipolar transistor, and the gates of a CMOS; forming an oxide film and a nitride film at the side wall of the polysilicon layer one and another; etching the exposed portions of an epitaxial layer and depositing other nitride film on the nitride film at the side wall; growing an oxide film on the etched portions of the epitaxial layer and removing all the nitride films; and implanting impurities on portions of the epitaxial layer exposed by the etched nitride films in order to make the inactive base region of the bipolar transistor and the source/drain regions of a PMOS transistor P+ type, and to make the source/drain regions of a NMOS transistor n+ type.

Abstract: Pivotable guide blades are arranged in an exhaust gas turbocharger in front of the turbine wheel inlet for charge pressure control in, for example, an internal combustion engine. These guide blades are moved by an adjusting ring so that an adaptation of the charge pressure takes place to the exhaust gas which rises with the rotational speed of the engine. When the rotational speed is further increased, the exhaust gas blow-off takes place by way of an integrated blow-off device. The guide blades and the blow-off device are actuated by a single actuator.

Abstract: A rotatable and longitudinally shiftable piece in a motor vehicle gear wheel change box interacts with three abutting shift rails. The longitudinal displacement of one shift rail blocks the two other shift rails. A spring engages in all shift rails in a form-fitting and elastic manner and locks them with respect to one another and with respect to the gearbox in the center position and in the respective left or right shifting position.

Abstract: A laser has a beam path multiply folded by two resonator end mirrors and at east one reflector retroreflectively folding the laser beam. The laser axis is parallel displaced to the axis of a further reflector. In order to improve the laser beam quality while retaining its comparatively low adjustment sensitivity, the beam path is folded at least twice with the retroreflective reflector.

Abstract: An apparatus and method for manipulating and transporting equipment such as electronic equipment racks is engageable with a rack in either its upright position or its horizontal position and is controllably positionable to rotate the engaged rack to a horizontal position for transport and vertical position for installation. The apparatus comprises a horizontal mainframe which is supported on casters and powered by a steerable pallet truck so as to be easily rollable and maneuverable. The mainframe supports a battery-powered drive unit coupled to a first piston manipulator, one end of which is pivotally attached to the mainframe and the other end of which is pivotally attached to a rotatable rack-support mast. The rack support mast unit contains a second piston manipulator one end of which is attached to the support mast and the other of which is attached to a translatable rack engagement subframe having an engagement footplate at one end of the rack support mast.

Abstract: A charging method for accumulators in two phases, the first phase being a constant current charging up to a given value of the battery voltage and, in the second phase, the battery voltage being limited as a function of the charging current.

Abstract: A process and an apparatus determines the position of an object by triangtion. In order to determine the location of an object, two illumination light beams coming from different directions are aimed at a reflector attached to the object and the reflected beams are detected by a location-sensitive sensor. In order also to detect the rotation position of the object, the reflector is partially mirrored so that a part of the illumination light beams striking thereon pass through it. The laser beams passing through the retro-reflector are detected in a sensor plane, which is spaced at a distance from the center of the reflector.

Abstract: As a result of an appropriate displacement of the control member, a connection of a fluid unit can, for pressure relief, be connected to a line leading to a low-pressure reservoir or be isolated from this line and/or, for the exertion of pressure, connected to a connection of a pressure source. Should the control member jam and be incapable of following an appropriate actuating stroke of a servomotor into the pressure-relieving position, a safety relief valve is opened by means of the actuating stroke.

Abstract: A muffler housing consists essentially of two shell parts and is penetrated by pipes arranged between the shell parts. Fastening screws are inserted through the pipes into receiving holes at one of the shell parts and are accessible there.

Abstract: A device for adjusting a nominal value of the dimension of an actuator, the longitudinal dimension of which can be changed by applying an external electromagnetic or electrostatic field, the magnitude of the external electromagnetic or electrostatic field being associated with the longitudinal dimension of the actuator, or soft-magnetic and highly magnetoelastic layer being connected to the actuator in such a manner that a change in length of the actuator produces a change in the mechanical stress in the layer. The change in mechanical stress in the layer produces a change in the value of an inductance, the mechanical stress in the layer being inferred from the magnitude of the inductance in sensor electronics and the longitudinal dimension of the actuator being inferred from the mechanical stress in the layer.

Abstract: An air induction system has pipe elbows swivellably arranged inside an air collector. As a function of the rotational speed and/or the load, in a first position, the intake path is formed by the intake manifolds and the pipe elbows to be relatively long. In a second position of the pipe elbows, the intake manifolds take air in directly from the air collector.

Abstract: A method and arrangement for measuring the resistance of a transducer which is coupled across a pair of conductors that are each coupled through separate sets of blocking diodes to a line card, these conductors possibly carrying a variable voltage. In the method and arrangement, a voltage of a first one of the conductors to ground is iteratively measured. This voltage from the first conductor to ground is tracked such that current flow is allowed through only one of the sets of blocking diodes. A value of the resistance of the transducer can then be accurately determined from the iteratively measured voltage values, since the variable voltage is taken into account by the tracking of the voltage from the first conductor to ground.

Abstract: A greenhouse, to be provided in a window opening, includes an enclosed housing having a first operable window pane provided on the outer side of the window opening to allow air into the enclosed housing, and a second operable window pane provided on the inner side of the window opening. The windowsill of the window opening is provided with an elongated groove to serve as a plant box to contain soil to grow plants. A watering device is mounted on the enclosed housing adjacent to the second operable window pane. The watering device includes a receptacle to contain liquid to water the plants, a watering pipe member communicated with the receptacle and extending into the plant box, and a valve to control liquid flow from the receptacle to the pipe member. A surrounding temperature control device is similarly mounted on the enclosed housing adjacent to the second operable window pane.

Abstract: For the purpose of reducing manufacturing costs and mounting defects, an electric ignition device has a one-piece basic body as a base for a primary and a secondary charge, so that the tightness is also increased with respect to moisture penetration.

Abstract: The invention relates to a compound turbo-drive for a two cylinder bank V-form internal-combustion engine with an exhaust-gas turbocharger for each cylinder bank that together feed a re-expansion turbine. To obtain a space-saving arrangement, the re-expansion turbine has a double-flow turbine housing with two integrated side inlet housings to which the exhaust-gas turbines of the exhaust-gas turbochargers are arranged horizontally.

Abstract: A vapor compression heat pump system and method employs thermal storage for adsorption of excess refrigerant under peak thermal load conditions, particularly for spacecraft use. The system can utilize a single compressor and optionally the adsorption bed in a radiator or dual compressors in which one compressor can always handle the base load and the other compressor is used for peak loads and for desorbing and cooling the adsorption bed.