Abstract: The zoom focus and deflection assembly for an image-to-electron beam converting electron discharge device comprises a magnetic deflection yoke and a magnetic electron beam focusing coil having N sections each having its own adjustable current source such that at least the opposite end ones of the N sections have the magnitude of current therethrough changed simultaneously in the opposite direction, where N is an integer greater than one.

Abstract: A method of fabricating a very small-size gate on a semiconductor substrate includes covering the substrate with a photoresist layer, masking an area of the photoresist layer that has a size exceeding the desired size of the gate, subjecting the photoresist layer to overexposure so that the size of the unaffected area is reduced to the desired size, removing the overexposed region of the photoresist layer, providing a protective coating on such region, clearing the unaffected photoresist material out of the area occupied thereby, and depositing gate material at least in the thus obtained recess. The gate material may be deposited over the protective coating, in which case the zone at which the gate is to remain is protected by unexposed photoresist material and the remainder of the gate material is removed from the protective coating.

Abstract: A multichannel duplex radio system for cordless telephone in which digital information is sent between the two ends. The data is divided into blocks which are transmitted in a fraction of the original block length. The other time slots are used for the duplex return path and for other similar equipment operating nearby. A direct conversion radio receiver is used in which the local oscillator signal is modulated for transmission.

Abstract: The invention concerns a seal device comprising a rotating and a non rotating seal ring, a so-called mechanical seal.The rotating (2) and non rotating (3) rings are pressed towards each other by an elastic socket (4) surrounding the shaft (1).

Abstract: A radio receiver for FM signals having a demodulation system to produce an approximation to an analog output by either measuring the time intervals between successive zero crossings in the I.F. (FIG. 1, FIG. 2B) or by filtering pulses produced at each zero crossing of the I.F. (FIG. 1, FIG. 2A). The demodulator includes two signal pathways in quadrature phase relation, the second signal either lagging or leading the first signal in dependence on whether the received signal frequency is above or below a local oscillator frequency. The modulation frequency can carry analog information separate and apart from the on-off (digital) information.

Abstract: A mechanical seal device includes a seal ring arranged non-rotatably in a cup which is locked against a shoulder on a shaft. The cup contains a ring of a flexible material which axially supports the seal ring. The flexible material ring is provided with a collar situated between the seal ring and the shaft, thus sealing the space and centering the seal ring on the shaft.

Abstract: A tray loading apparatus includes an inclined support having a displaceable front part so that the front wall of a tray can be brought into abutment with the front end of a stack carried by the support and to be loaded in the tray after a backing plate supporting the stack front end has been removed. The stacking apparatus includes a conveyor able to apply the front portion of each envelope conveyed in a direction making an angle with the above backing plate against this backing plate and a belt arrangement operating on the front portion of each envelope to cant the rear part of the envelope into engagement with a deflector after the front portion has been applied against the backing plate.

Abstract: This invention relates to continuous manufacturing of insulated wire and conductor, and in particular to heating cables having "cold ends". A process is described by which predetermined lengths of resistance conductor (4) and of cold end conductor (9) are continuously and alternatively jointed together. After insulation and provision of additional protective sheats the continuous composite conductor is cut into cold end heating cables. A conductor jointing process is described.

Abstract: An optical fiber which has just been drawn from an optical preform is provided with an external hermetic coating by using a heterogeneous nucleation thermochemical deposition technique. This technique involves passing the fiber through a reaction zone which contains a gaseous medium that includes a reactant which decomposes, or a mixture of reactants which chemically react, at a predetermined temperature to form the material of the coating. Only the fiber but not the gaseous medium surrounding the same is heated to the predetermined temperature, especially by directing radiation onto the exposed circumferential surface of the fiber, so that the decomposition or the chemical reaction takes place directly on the exposed surface of the fiber rather than in the gaseous medium, accompanied by simultaneous deposition of the coating material on the exposed surface of the fiber. The resulting fiber with hermetic coating can then be provided with an additional polymer coating layer.

Abstract: A method of manufacturing thin film dielectric material by directing vapors of reactants containing lead and additional metals and an oxidizing gas onto a heated substrate to form a layer of dielectric material thereon, which layer can be of a high dielectric constant (greater than 5000).

Abstract: A method of making a channel substrate buried heterostructure InP/(In,Ga)(As,P) laser avoids the need to use two separate stages of epitaxial growth by using a channel in a (100) surface substrate 1 extending in the [011] direction with {111}B sides. This allows the channel to be made before the growth of an (In,Ga)(As,P) blocking layer 3 which can be grown under conditions which do not require the use of a mask to prevent nucleation on the channel sides. The same technique is also applicable to the manufacture of a terraced substrate laser incorporating a blocking layer.

Abstract: At least one metallic element is incorporated into a cable during the manufacture of optical fiber cables, along with one or more elongated optical fibers. Such metallic element with its insulation is similar in diameter to an optical fiber with its sheath. The electrical resistance of the metallic element varies very little with temperature, but does vary with strain. Hence, by monitoring the resistance of the metallic element, the strain to which the fibers are subjected can also be monitored.

Abstract: A method of synchronizing a digital radio pager receiver with incoming digital data signals. At switch-on the receiver first attains a "course" bit synch during the first quarter-word period and then a "fine" bit synch during the next half-word period. The receiver then examines incoming data bits to determine simultaneously (a) whether valid data is being received and (b) whether the incoming data contains a preamble sequence. If either determination is successful the incoming data is then examined to determine whether it contains a synchronizing word or an address word. The synchronization and address word determination is also carried out while bit synch is obtained and the valid data/preamble determination is effected.

Abstract: A device for guiding a submersible pump unit to and from its operation position includes an essentially vertical thin guide member the lower end of which gradually changes into a broader portion and the upper end of which is tilted to make possible an easily releasable connection to a guide formed on the pump unit.

Abstract: Floor-sweeping machine consisting of a housing with a revolving brush mounted rotatably therein and having pinions which are provided at its two ends and which are themselves each connected operatively by engagement to a pair of running drive wheels, the two running drive wheels belonging to a particular pinion being mounted rotatably in a wheel case and the wheel cases being mounted in appropriate housing receptacles so as to be vertically displaceable for adjusting the height of the revolving brush mounted fixedly in the housing, wherein, for a permanent adjustment of the height of the revolving brush without impairing the drive of the revolving brush by the running wheels, each wheel case (26) is retained by means of a wheel-case holder (38) to swing on one leg (44) of a U-shaped adjusting shackle (45), and the U-shaped adjusting shackle (45) is mounted pivotably in appropriate bearings (55) of the housing (11) by means of angled portions (54), shaped on the free ends of the legs (44), and an adjustable we

Abstract: A radiation detecting arrangement for measuring or counting an ionizing radiation contains a compensating filter arrangement which safequards a measurement of the radiation dose which is either independent of the energy, or independent of both the energy and the direction thereof. The compensating filter arrangement contains a supporting tube made from a slightly absorbing metal having an ordinal number not higher than about 35, which surrounds a tubular radiation detector and which, on its surface, carries several ring-shaped filter parts. These filter parts are made from one or more metal sleeves of a heavy metal or of a heavy metal alloy slipped onto the supporting tube and soldered or cemented thereto. These filter parts, as regards position and shape, are manufactured by a metal-removing process with only the supporting tube being clamped by the metal-removing machine.

Abstract: An electronically tunable narrow band tuned cavity filter includes a housing which bounds a tuned cavity, a plurality of resonator bars secured to the housing, extending across the tuned cavity and having respective extensions that pass through respective openings of the housing to the exterior of the tuned cavity, and a set of tuning capacitor plates for each of the resonator bars. The tuning capacitor plates associated with the respective resonator bar are arranged outside the tuned cavity around the extension in a compartment surrounding the opening, together with respective switching networks driven by an electronic drive and operative for including the capacitor plates in or excluding the same from electric circuit with the respective resonator bar. The capacitor plates may be directly juxtaposed with associated facets of the extension to form respective tuning capacitors therewith.

Abstract: Electrical resistance heating element including a number of metal strips arranged in a meander-like pattern. In the resistance metal strips, which are made from a non-expensive base sheet material like lead, there is incorporated at least one fuse which will operate if the heat transfer from a randomly placed area of critical size (a critical area) is substantially blocked. The fuse or fuses are preferably constituted by a lead/tin alloy rolled into intimate contact with the lead base material.

Abstract: In the manufacture of optical fiber having a core of a core material and a cladding of a cladding material by drawing the fiber from an optical glass preform, the preform is manufactured by reacting a first plurality of initial reactants in their vapor state to obtan core material particles, by producing a coherent core body from the core material particles, by reacting a second plurality of initial reactants in their vapor state to obtain cladding material particles, by providing a coherent porous cladding on the core body from the cladding material particles, and by sintering the resulting composite body to convert the same into the preform. The core body can either be sintered before combining the same with the porous cladding material, or it may remain in its initial porous state until the sintering of the composite body.

Abstract: A laundry handling machine for performing both a washing operation and a drying operation includes a blower which directs air over the motor during both the washing and drying operations to cool the motor and additionally directs air over a heating element during the drying operation to provide heated air through the vat. A rotational speed reduction arrangement is provided for controlling the timing of both of the operations. A drying operation timing device is driven by the washing operation timing device. A rinsing device is coupled with a supply conduct for a rinsing liquid and also with a siphon drain tube which has a larger cross-section than the supply conduct.