Abstract: An improved control circuits is disclosed for use with a resonant converter having a resonant circuit and a first and a second plurality of switches for transferring electrical power between first and second terminals. The improved control circuit comprises a power transfer control or an outer control loop and a resonant circuit control or an inner control loop with the resonant circuit control having a predictor circuit. The power transfer control regulates the electrical power transferred between the first and second terminals through selective conduction of the first and second plurality of switches for selectively initiating oscillation of the resonant circuit to provide resonant pulses of the resonant circuit.

Abstract: A control apparatus with connecting terminals which are in part connected to serve a plurality of functions. The control apparatus has at least one memory and can be especially for a control apparatus of an electronic internal combustion engine control wherein an additional voltage source for the memory is provided via at least one output terminal accommodating at least one function.

Abstract: All but one of the microcomputers in a multi-computer system are equipped with a rapid-access read-write memory and a fixed content nonvolatile read-only memory. Each of these read-only memories, however, stores a multiplicity of varieties of one or more sets of data, so that, in the case of a computer system for a motor vehicle engine, the same system can be used in any of a large number of vehicle models. One of the microcomputers of the system has a programmable memory which is programmed at the time of installation to designate the portions of the fixed memories that are to be utilized. When the system is turned on, the programmed memory designation number is stored in the read-write memory of all of the computers of the system, with the result that the designated portion of each fixed read-only memory is always referred to in any computer of the system. It is not important that, when the system is turned off, the memory content of the read-write memories is lost.

Abstract: A vacuum bottle wherein the housing of the insulating jacket has a top section with a circular opening for the extension of a cover which overlies the opening and can be rotated to move one of two apertures in a downwardly extending skirt of the extension into register with a passage at the inlet end of a spout. The cover is separably coupled to the top section of the housing by a bayonet mount which causes the cover to rise during rotation to a pouring position and to descend during rotation to a sealing position. The jacket confines a receptacle for a hot or cold beverage which can be dispensed by way of the spout in the pouring position of the cover.

Abstract: In known air flow rate meters, the initial tension of a spiral spring, which generates the restoring force on the baffle valve, is adjusted by the snapping of a locking spring into gaps between the teeth of a tooth ring provided on the spring housing. However, the tooth spacing cannot be made arbitrarily small. Accordingly, a way to enable finer adjustment of the initial tension is needed, so that a measurement can be made even at low idling speeds and with a small aspirated air quantity. In the air flow rate member according to the invention, the locking spring engages a detent element, which facing the toothed ring has an inside serration, the spacing of the teeth of which is less than the spacing of the toothed ring; when the spring housing rotates, detent increments that correspond to the spacing of the inside serration are attainable. Quite generally, the embodiment according to the invention enables sensitive adjustment and locking of a spiral spring serving as a restoring force.

Abstract: A portable electric hair dryer wherein the housing contains an electric motor for an impeller which induces the flow of air from an inlet of the housing, along an electric heater in the housing and to and through an outlet of the housing. The casing of the motor is surrounded by a ring-shaped diffuser with stationary guide vanes which uniformize the flow of air toward the heater. The controls of the motor are mounted on a circuit board which carries one or more triacs, diodes and/or other electronic components which are heated when connected with a source of electrical energy and must be cooled when the hair dryer is in use. The heatable electronic component or components are mounted on an extension of the circuit board, and such extension is installed directly in the diffuser between two neighboring guide vanes. To this end, one of the guide vanes is removed or omitted and the electronic component or components take the place of the missing guide vane.

Abstract: In control motors having an armature rotatable counter to a spiral spring, a problem arises that the set force of the spiral spring can be changed by the process of installation. The disclosed control motor is intended to enable setting of the force of the spiral spring after installation. To enable setting of the force of the spiral spring after installation, relative to which an armature of a control motor is rotatable, a shaft on which the armature is supported is screwed with a screw end into a threaded bore of a housing bottom end. Connected to the shaft is an adjusting element, which with a driver arm engages an end portion provided on the outer end of the spiral spring. By rotating the ends of the shaft, which are accessible from outside, the force of the spiral spring can be changed. The invention is preferably applicable to idling adjusters, but it is not limited to this field of application.

Abstract: A camera has a lens that has a field of view and a film pack for positioning film for exposure substantially along a focal plane of the lens. A screen is positioned to block a portion of the field of view of the lens. The camera also has a flash unit for illuminating the screen during film exposure whereby light from the field of view may be directed by the lens to one portion of film positioned along the focal plane and light from the screen directed to a second portion of the film.

Abstract: A portable electric hair dryer wherein the insulating carrier of electric contacts for a motor which drives an air impeller between the air-admitting inlet and the air-discharging outlet of the housing is separably coupled to a second insulating carrier which is provided with electric contacts for and supports an electric heater. The latter heats the flow of air between the inlet and the outlet of the housing. One of the carriers has male coupling elements, which can include or constitute the contacts on the one carrier, and the other carrier can have female coupling elements, which can include or constitute the contacts on the other carrier, capable of separably receiving and retaining the male coupling elements.

Abstract: A wheel cover attachment assembly for vehicles has an engagement clip member and a detent member which fit together. Arms project from the clip. The arms having a pointed end to facilitate entry into the groove of a tire rim. The arms have claws to diggingly grip into the rim. The clip has projecting feet with toes for gripping a recess wall of a wheel cover to hold the clip thereto. The detent has a projecting nose which is aligned with the clip arms, and a pair of legs aligned with the clip legs. The end of the detent nose has an upper slanted surface and an arcuate underside to facilitate removel from the rim. The detent has bosses that fit in holes of the clip to hold the two together during assembly. The detent nose is of a resilient self-lubricating material such as plastic. The detent nose and the clip arms are shaped so that upon insertion, a side of the nose has substantial contact with the tire rim while the edges of the clip arms do not.

Abstract: An electric steam iron wherein the path for the flow of water from a permanently installed or detachable water tank to the heater contains a supply of water softening agent which can be observed from the exterior of the housing and can be replaced, when necessary, or discarded jointly with an expandible tank or with a perforable envelope or an apertured cartridge.

Abstract: In a threephase generator, it is suggested, for the purpose of supporting the stator plates, to provide the latter with a decoupling ring which is held securely at the stator plates on the one hand and, on the other hand, by means of clamping in a fit of the housing parts of the threephase generator on both sides. The decoupling ring can consist of two decoupling ring portions which embrace the stator plates and, at a distance from the latter, form a common clamping place for the end shields of the housing; or a radial ring can be formed, which is securely connected along the circumference alternately with the surface of the stator plates on the one hand, and, on the other hand, with certain clamping places in the housing by means of coupling segments. The half-shells of the decoupling ring and the radial ring can be formed directly by the laminations of the stator plates by means of a corresponding shaping.

Abstract: An injection lubricator including a lubricant pump having a pumping piston actuated by a pneumatic pulse to deliver a pulse of lubricant, a first rotatable counting member that provides a pneumatic pulse to the pump after a fixed number of incremental rotations of the first rotatable counting member, a second rotatable counting member that carries a displacement member that provides an incremental rotation of the first rotatable counting member after a plurality of incremental rotations of the second rotatable counting member, and a counting piston that is mounted within a piston chamber to receive pneumatic pulses and to provide an incremental rotation of the second rotatable counting member upon receiving each pneumatic pulse.

Abstract: A shock absorber useful in motor vehicles which includes a piston inside of which an entire quantity of a damping fluid exchanged between two work chambers flows via a throttle cross section the size of which is defined by an electromagnetic adjusting device comprising primarily a magnet coil and an armature. The armature is annular and merges with an annular control slide provided with a slide control edge, which slide, in cooperation with a piston control edge on the piston determines the size of the throttle cross section. The control slide and armature are statically in pressure equilibrium, and because of their annular embodiment they have only a slight weight of their own, so that the shock absorber operates with short adjusting times. By way of a defined profile of the slide control edge or piston control edge, certain damping characteristics are attainable.

Abstract: The invention relates to a process for fuel metering during acceleration operations at a plurality of cylinders of an internal-combustion engine, with sequential injection, in which the fuel quantity to be injected is determined corresponding to the operating state and the acceleration state is determined, additional fuel injections being performed after determination of the acceleration state. Such a process is to be further developed to the extent that a faster metering of the increased fuel quantity into the internal-combustion engine can be performed during the acceleration operation. To achieve this object, it is proposed that the determined fuel quantity is injected into at least one, preferably into all those cylinders whose injected fuel quantity has not yet been taken in and whose inlet valve has not yet been closed or whose intake stroke has not yet been concluded.

Abstract: An apparatus and method for jacking basement walls which have moved out of alignment due to pressure from outside the wall. The apparatus includes a brace attached at the bottom by a bracket adjacent the wall to be jacked. The brace is then set vertically against the wall. A telescoping beam is attached to the floor a short distance from the wall, so that the beam is positioned upright, parallel to the brace. In one embodiment the upper end of the beam is extended and attached to the floor joists overhead in the basement. In another embodiment the upper end of the beam is secured to the lower surface on which the wall rests. Any suitable jack assembly is then slidably attached between the beam and the brace. The jack assembly is then positioned at the proper point and used to move the wall back into its proper place. Finally the top of the brace is anchored so as to prevent the wall from moving back out of position.

Abstract: A reflector, made from a thermosetting plastic, has three tightening faces on its crown neck that act as a catch, into which three protrusions, such as pawls, dig in a thread-like manner with teeth of the ring. As a result, the ring secures an incandescent bulb in the reflector. By means of this unilaterally acting friction catch, lateral slides, in particular, become unnecessary on an injection holder of the reflector, which is a considerable advantage in the processing of thermosetting plastics.

Abstract: A saw blade guard for a sawing power tool, particularly a mitre saw, comprises a protective element having two side walls each formed as a part of a circle, and a peripheral wall connecting the side walls with one another, the side walls having a center and an edge spaced from the center, the protective element being formed as an integral element and provided with a member in the region of the edge for turning the protective element as a whole.

Abstract: An apparatus for measuring the mass of a flowing medium and a method for producing the apparatus. The apparatus includes a carrier, to which at least one resistor layer is applied. To calibrate the resistance value of the resistor layer, material can be removed in a calibration zone on the end of the resistor layer remote from the incident direction of flow. To this end, the resistor layer is connected with a current source furnishing a constant current. The temperature of the resistor layer is measured by means of a temperature measuring device and compared in an electronic device with a predetermined temperature, and the electronic device, upon a deviation of the measured temperature from the predetermined temperature triggers a material removing device for the removal of resistor material in the calibration zone (trimming zone).

Abstract: A circuit arrangement for transmitting variable measurement values, such as pressure and temperature, at vehicle wheels is provided which transmits the measurement values in the form of H-F signals to a stationary evaluating circuit (12) with great accuracy, high reliability and in short time intervals. A repeater coil (b 13), which is connected with the latter, arranged in the vicinity of the wheel so as to be stationary and connected to voltage by a square-wave generator (15), cooperates with a revolving repeated coil (19) which is fastened at the vehicle wheel and connected with a sensor circuit arrangement (20) supplied by it.