Abstract: An anchoring device for screws having a casing in the form of a slitted expansion dowel, and an associated expansion body. The casing and the body are connected by a rupturable bridge which can be ruptured by axial movement of the body. The body has suitable elements, embodied as wedge tabs, which engages the slits of the casing. The casing and the body are made of synthetic material. The expansion body has elements which are moved radially outward, and preferably spread, as a result of form-fitting cooperation with countersurfaces located on the casing when the body approaches thereto.

Abstract: What follows is a description of a fuel injection system for spark plug-ignited internal combustion engines with compression of the air-fuel mixture and structure for controlling the system pressure. The system is one which includes a device for regulating a fuel injection quantity operating in dependence on the air quantity streaming through a suction tube of the engine, a pressure regulator for determining normal system pressure, injection nozzles which have an opening pressure lower than the system pressure, a continuously delivering fuel pump, and the structure identified above. This structure adjusts the device for regulating the fuel injection quantity so that the starting pressure in the system is retained below the opening pressure of the injection nozzles and above the vapor pressure of the fuel until a quantity of fuel sufficient to replace the quantity of fuel evaporated or leaked due to a temperature gradient in the system resulting from engine cut off has been restored.

Abstract: A sealed, double valve assembly mounted on a vehicle body is connected to a source of pressurized air and controls the air pressure delivered to two auxiliary systems connected to it. The first auxiliary system is a brake force regulator and the second auxiliary system is a headlight beam adjustment mechanism which uses a pneumatic servo-member.Control rods connected to the axle change the degree of compression of a control spring in the double valve assembly, thereby opening or closing valves which admit or release compressed air so as to change the operating pressure of the associated auxiliary systems.

Abstract: A low light level image pick-up tube is protected from excessive illumination intensity damage by controlling a very high voltage assembly supplying the tube. The tube comprises in a preferred embodiment a plurality of image intensifier stages in cascade preceding an electron gun from which a video signal is provided by electronic scanning.A mean level video regulation circuit provides from the video signal an output signal used for controlling the supply voltage value to at least one of the image intensifier stages including the last one i.e. that preceding the electron gun. Further, a signal proportional to the supply current to the last image intensifier stage is used for controlling the supply voltage value of the input image intensifier stage which receives focussed radiation from an observed field.

Abstract: A fuel injection system for externally ignited internal combustion engines preferably has one fuel injection location in the air induction tube (manifold). The metering of fuel occurs independently of the condition of the air prevailing at the injection location, the injection location is disposed ahead of the junction of the air induction tube which leads to the individual engine cylinders. Air is brought to a high velocity by means within the induction tube and impinges, at this high velocity, immediately on the injected fuel, enveloping the same. As a result, the mixture preparation is effected without wetting of the inner wall of the induction tube and the means which bring the air to the required high velocity.

Abstract: A horn speaker comprising a diaphragm positioned close to a throat and side walls forming sound passages for radiating the vibrations of the diaphragm effectively as sound waves from the mouth of the speaker.

Abstract: A control system for a fuel injection pump assembly wherein the regulation of the fuel quantity is influenced by a control rod. This control rod is displaced by a cam follower assembly and the cam itself is a three-dimensional cam whose spatial orientation may be changed, firstly, by rotation about its axis where the magnitude of this rotation depends on the amount of air aspirated by the engine and, secondly, by longitudinal motion along its axis, where the magnitude of this motion depends on the rotational speed of the engine.

Abstract: A fuel injection system for internal combustion engines employing continuous fuel injection into an induction tube. The system includes a regulator which maintains constant fuel pressure upstream of a fuel metering and distribution valve assembly which has individual metering apertures for each injection valve of the engine. A control slide determines the effective cross-section of these metering apertures. The pressure gradient across the metering apertures is held constant by fuel injection valves constructed as flat-seat valves whose movable valve closing member is attached to and guided by a diaphragm. Fuel delivered by the metering and distribution valve tends to open the flat seat valve, permitting fuel to flow through the valve orifice. This opening force is opposed by a single helical control spring, or by a single helical control spring augmented by ambient air pressure. The valve closing member may be provided with a central bore.

Abstract: An improved rpm regulator for a fuel injection pump associated with an internal combustion engine. The regulator includes an intermediate lever, a fuel quantity control sleeve conncted to the intermediate lever, a regulating spring connected to the intermediate lever, a device for generating an rpm signal and applying a force corresponding therewith through the intermediate lever to the fuel quantity control sleeve in opposition to a force exerted by the regulating spring, a control lever, an adjustable stop mounted to the housing and a biasing spring. The intermediate lever is mounted to the control lever which in turn is mounted to the pump housing and is biased against the adjustable stop by the biasing spring.

Abstract: An rpm regulator of a fuel injection pump for internal combustion engine includes a single-arm drag lever and an intermediate lever which are bent to define a space into which a compression spring extends. The stroke of the compression spring is limited in both directions by stops defined by the intermediate lever and the drag lever, respectively. The regulator also includes a control spring arrangement which engages one end of the drag lever, a fuel quantity setting member which engages one end of the intermediate lever and controls due to its movement the quantity of fuel delivered by the fuel pump and an rpm governor which exerts an rpm defendent force against the intermediate lever in opposition to the force of the control spring arrangement. With this regulator the pump can deliver an excess fuel quantity for starting purposes and an automatically reduced normal fuel injection quantity when the rpm increases. This result is accomplished without increasing the dimensions of the fuel pump.

Abstract: The inlet and outlet ends of a catalytic reactor are instrumented with oxygen sensors. A change of the fuel-air concentration of the combustible mixture is indicated by a jump in the output voltage of the sensors; the voltage of the inlet sensor changes before that of the outlet sensor and the greater the time difference between these changes, the higher is the catalytic activity of the reactor. When a repeatable and constant engine condition is reached, the fuel-air mixture is abruptly changed and an electronic circuit enables a logical circuit which controls a signal lamp. If, during a predetermined time interval, the outlet sensor also changes its output voltage, indicating a time difference which is too short, the warning signal is energized and the operator is alerted to the insufficient level of reactor activity.

Abstract: An electromagnetic 3-way valve arrangement having two valves, each controlled by a separate armature of a single coil solenoid, is described. The top end of each armature has a self-aligning closing element, and the two armatures are held apart by springs acting against an intermediate member, which also contains the valve seat for the lower armature. When deenergized, these springs act against the armatures to close the upper valve and open the lower valve. When the solenoid coil is partially energized, it moves the lower armature upward to close the lower valve also. When the solenoid coil is fully energized, it moves the upper armature downward to open the upper valve. If desired, the armature can be disposed within the solenoid so that the upper armature is operated at partial energization, and the lower armature at full energization of the solenoid coil.

Abstract: A rack and locking unit for a bicycle includes a pedestal, a lock box mounted on the pedestal and at least one arm member mounted to the lock box and extending in a direction substantially perpendicular to the pedestal. The lock box has at least one locking bar structure mounted to it which is axially and pivotable displaceable relative to the lock box between a locked and unlocked position. Within the lock box there is provided a locking mechanism for each locking bar structure which is actuatable externally of the lock box, by, for example, a key. Preferably the locking bar structure receives a wheel and a portion of the frame of the bicycle to lock it to the unit. The arm member is in turn provided with a shaft which extends outwardly therefrom in the displacement direction of the locking bar structure. The arm member and shaft receive the other wheel of the bicycle and prevent its removal when the first mentioned wheel is locked in place.

Abstract: Calibration apparatus for use with particle volume measuring equipment us the Coulter process, which detects and analyzes the voltage pulses produced by particles passing a narrow aperture in which an electric field is maintained.The calibration apparatus includes a calibration pulse generator with pulse-shaping circuitry which produces a sequence of calibration pulses, approximately trapezoidal in shape, which are introduced into the particle measurement path, in series with the measurement aperture traversed by the particles. The generator includes precision attenuation resistors for varying the amplitude of the calibration pulses.The apparatus also provides for adjusting and maintaining a constant current through the measurement aperture and for amplifying the pulses produced by particles passing through the aperture whose amplitude is compared with the amplitude of the calibration pulses.

Abstract: A magnetic lock mechanism which may be used in conjunction with many devices such as a padlock, dead bolt door lock, conventional door lock, safety deposit box, safe doors, automobile doors, gas cap locks, ignition switch locks, a switch actuating device or others. A key having magnets, selectively oriented therein, line up magnetic tumbler pins location within the locking device. With the tumbler pins lined up, a member can be moved axially and then rotationally to actuate a driving member.

Abstract: A neutralizing transformer comprising a flat ribbon-like conductor cable having a plurality of flexible conductors, either flat or round, encapsulated in insulation with a flexible conductor shield or ground plane coextensive with the width of the cable, said transformer being formed by coiling such flexible ribbon-like conductor cable and utilizing the shield as the transformer primary with the flexible conductors as the secondaries. The secondaries may be connected in various ways to reduce the mutual capacitance between the conductors while at the same time maintaining a high dielectric withstand capability between the conductors.

Abstract: The present invention relates to a bob or float for use with fishing lines and more particularly to a sectional float which is slidingly mounted on a fishing line in a novel manner.

Abstract: In an internal combustion engine employing manifold fuel injection, the air flow rate through the induction manifold controls the motions of a slide in a metering and distribution valve assembly. The slide, in turn, controls the effective metering valve apertures of several individual openings, each leading first to an equal pressure diaphragm valve and, hence, to individual fuel injection nozzles.The system includes a differential pressure control valve, which maintains a constant pressure difference across the metering valve apertures in the metering and distribution valve assembly. The differential pressure control valve may be in parallel or series connection with the several equal pressure diaphragm valves. The system also includes a pressure control valve, responsive to engine parameters, which adjusts the resetting force acting on the control slide in the metering and distribution valve assembly.

Abstract: An electromagnetically actuatable fuel injection valve including a housing within which a magnetic core and winding are mounted along with an armature and a valve needle. The valve needle is provided at one end with an armature connection which fits within a bore of the armature. The armature connection is provided with a series of adjacent lands and grooves which are press-fitted with respect to the wall of the armature bore by a swaging tool. In this way a fixed and permanent bond is created between the valve needle and the armature.

Abstract: A driving element such as a worm is mounted within the bore of a cage consisting of two cylindrical end bodies associated in coaxial relation and rotatable within housings formed in the gear-box. The axes of the bore and of the end bodies are relatively displaced so that the driving element is engaged with the driven element such as a wormwheel in one angular position of the cage but disengaged in an angular position which is displaced by 180.degree. with respect to the first, means being provided for locking the cage in each position.