Abstract: The fuel injector comprises an injector body (10) containing a needle (12) terminated by a shutter element co-operating with a fuel-passing seat (28) that is extended by a diffusion hole, the needle also being displaceable between a first axial position in which the shutter element bears against the seat and a second position in which the shutter element is spaced apart from the seat, the injector also comprising a swirling chamber for putting the fuel into rotation about the axis of the shutter element and situated upstream from the seat. The chamber is defined by the upstream face of the seat (28), by a disk (42) pressed against the seat and having slots (48) opening out tangentially into a central opening (46) surrounding the shutter element, and by a needle guide (40) constituted in such a manner as to feed the outer ends of the slots.

Abstract: For the connection, a transition plate (11), for rotating the polarization of the waves leaving one (2) of the guides into an intermediate transition polarization, which is not parallel to the polarizations of the two guides, is inserted between the two waveguides (1, 2), the plate (11) is fixed to one (2) of the two waveguides and one end of the other waveguide (1) is introduced into a recess (12) for housing the transition plate (11).

Abstract: The system for monitoring the pressure of a tyre of a vehicle wheel comprises a pressure sensor (1), a transmitter (3) for transmitting pressure data and a power-supply battery (10), and a temperature sensor (4) and a processor (2) are also provided, the processor (2) being arranged to control the transmission of the pressure data according to the temperature.

Abstract: The safeguarded system for monitoring the pressure of a tire (8) of a vehicle wheel comprises a pressure sensor (1), a transmitter (3) of series of identical bursts of pressure data and a processor (2) for controlling the transmission of the bursts of data, arranged in order that, at least at wheel rotation speeds higher than a threshold, at least one burst of a series is transmitted in its entirety upon one wheel rotation.

Abstract: An electronic package has a plate of aluminum or aluminum alloy supporting electronic microcomponents. Trenches, and possibly cavities, are formed on a major surface of the plate. An insulating oxide layer covers the major surface, including the trenches and cavities. A network of equipotential electrically conductive connection tracks are formed on the major surfaces and receive contacts of the electronic microcomponents. Some tracks are above the trenches and thicker than the others.

Abstract: The apparatus includes a sensor capable of delivering a voltage representative of the ratio between a reference oxygen pressure and the oxygen pressure in a volume of the sensor and provided with electrodes (12, 14) via which it is possible to pass a pumping current that controls said oxygen pressure in the volume, and monitoring and control means including a digital controller (26) receiving said representative voltage on an input and suitable for delivering the pumping current. The monitoring and control means deliver the pumping current in the form of a current that varies continuously and progressively, without interruptions, governed by the digital controller in such a manner as to servo-control the input voltage to a determined value.

Abstract: An injection pump comprises several modules in a housing. Each module has a chamber supplying an injection circuit, separated by a deformable diaphragm from a compartment defined by a bore of the housing and by a reciprocating piston. The chamber is connected to a fuel supply and is connected to the injection circuit by a non-return valve. The pressures of the liquid in each compartment are adjusted independently. All pistons are driven by a same cam.

Abstract: To enable the localizing of a mobile telephone in a network of base transceiver stations, it is planned that the mobile telephone will undertake an exchange with a base transceiver station. In this exchange, this station will send it an absolute time so that the mobile telephone can temporarily locate itself with respect to this absolute time. During this exchange, the first base transceiver station furthermore sends the mobile telephone a piece of information .tau.1 on the distance between them. Then, at least two other base stations send different absolute times which are exploited by the mobile telephone to compute its position in the network by triangulation.

Abstract: The fingerprint sensor device comprises a thin flat transparent support (10) having an outside face for receiving the end of a finger and carrying on an inside face a two-dimensional matrix of photosensitive elements separated by strip-shaped gaps, and a substrate (14) carrying on an inside face light sources for directing light through the support via the strip-shaped gaps and substantially orthogonally to said outside face. The photosensitive elements are protected from the light coming from the sources so as to deliver an output signal only in response to light that has been back-scattered towards the outside face of the support.

Abstract: The device has a stabilization mirror that is angularly steerable about two mutually orthogonal axes, and an optical system for splitting an incoming light beam into at least two channels corresponding to different wavelengths. The stabilization mirror is steerable about a first axis (L) on internal equipment that is itself steerable about a second axis (I) orthogonal to the first and intersecting in an assembly that is steerable on a support about a third axis (C). A servo-control system has a gyroscopic sensor tied to the mirror and controlling steering motors. The system further includes, upstream from the stabilization mirror, and on the path of an incoming beam, a purely catoptric optical system that is stabilized, giving the inlet beam a size on the mirror that is smaller than the size of the inlet pupil of the system.

Abstract: For guiding an airplane to a docking station in an airport, a two-dimensional thermal IR image of a station approach zone is formed from a determined point close to said docking station, Entrance of an airplane into the approach zone and locations of IR features of the landing gear of the airplane are detected on arrival of an airplane. The distance between the airplane and the station is computed from stored characteristics of the landing gear of the airplane expected at the station and from the locations as well as any difference between a current path followed by the airplane and a set path for the airplane to arrive at the docking station in a determined orientation. A system for implementing the method and displaying instructions for the aircraft pilot is also disclosed.

Abstract: A process for producing a coil of wire formed at least partially of substantially frustoconical plies of wires laid against one another in a continuous fashion. Wire is first wound onto a core in a first direction over a first length L which is less than the length of the core. Winding continues in the opposite direction over a second length L-d.sub.1 which is less than length L by an amount d.sub.1, and winding then continues in the first direction over a third length (L-d.sub.1)+d.sub.2 which is greater than said second length L-d.sub.1 by an amount d.sub.2. Winding then continues in the same manner until the desired number of plies is obtained.

Abstract: The mobile cellular telephony terminal includes a radio transmitter/receiver (1) for communicating with base stations of a cellular network, measuring the Doppler velocity of the transmissions originating from the stations and accordingly operating circuits (2) for estimating the velocity of the terminal, by composition of the Doppler velocities, and updating circuits (4, 5) are provided for updating an inertial unit (10) supplying the radio circuit (1) with the position of the terminal, by comparison between a terminal velocity supplied by the unit (10) and the estimated velocity.

Abstract: To measure, in a reference frame, angular displacements of a privileged axis tied to a carrier, angular velocities or angular increments of the carrier are measured about two axes tied to the carrier, which axes are orthogonal to each other and at an angle of about 90.degree. the privileged axis. Said mutually orthogonal axes are caused to rotate at high speed about said privileged axis. The angular positions of said mutually orthogonal axes about the privileged axis are determined continuously relate to a reference position. Their angular displacements are calculated by integrating their angular velocities while taking account of said angular positions of the orthogonal axes about the privileged axis.

Abstract: The present invention relates to a process for charging a battery from an alternating current voltage which provides voltage to the battery in each direction. The charging current is regulated alternatively in a boost and buck mode as a function of an error (AI) between the instant value of the current and an instant value of a supply current following a pre-determined pattern. The activation of the modes of operation is controlled according to the sign of the error of the current (AI). The present invention also relates to a battery charger for implementing the above charging process. The battery charger has two sub-assemblies for current regulation operating respectively in boost and buck modes, a subtractor for determining the error of current, and a common loop for feeding the sub-assemblies and controlling amplifiers for the activation, depending on the sign of the error.

Abstract: The system for a printer in its reservoir for consumables for office equipment includes essential command unit for a printer, an electric chip having a balance of consumables and memory and a device to control the reservoir of consumables. The device includes a chip/central unit interfaced in a computer intended to determine the content of the reservoir of consumables, by calculating the flow, in cooperation with the central unit, by estimating the quantity of consumables used according to the estimated quantity of printed copies, and the balance of consumables left. This system has applications to photocopiers as well.

Abstract: In a method for modifying the resolution of an image obtained by digitising a real image, the digitised image includes a plurality of pixels of a particular intensity. The outlines in the digitised image are studied and isolated and additional pixels are created by interpolation of the intensities of original pixels located on one side of an outline to form an image with a modified resolution. The studying of outlines is achieved by locating, for close pixels, the intensity transitions representative of a gradient exceeding a particular threshold. The method is utilized for modifying the image resolution of facsimile machines.

Abstract: The device for imaging finger prints has a transparent electrically insulating substrate, a thin transparent electrode on the substrate and a sensitive layer on the electrode comprising electroluminescent dielectric material, arranged to receive hand tissues whose print is to be imaged. A source means connected to said electrode applies a voltage between the electrode and tissues. A camera provides a picture taken through the substrate.

Abstract: An electromagnetically actuatable disc-type valve includes a pre-assembled hydraulic sub-assembly with a core member and a separately pre-assembled electrical sub-assembly with a body. The exterior surface of the core member is configured to facilitate insertion into the electrical sub-assembly and orientation relative thereto by use of a bushing. The outside diameter of the body of the valve is no more than 13.5 millimeters in the vicinity of the delivery end of the hydraulic sub-assembly. A fluid filter is disposed between a tensioning spring and a calibration slide to facilitate more accurate flow checking and leakage checking of the valve during manufacture.

Abstract: An item of office equipment, such as a facsimile machines, is provided having image analysis and laser printing capabilities with a shared mechanical image scanning apparatus. Embodiments include a single assembly with an analysis head and a laser emitting source disposed facing each other, a revolving mirror interposed between them, and first and second returning mirrors disposed symmetrically with respect to a line along which the analyzing head and the laser emitting source are disposed, such that the revolving mirror is located substantially at a point constituting an operational centre of symmetry of the single assembly. This symmetrical design allows the single analysis/printing assembly to be structurally simple and compact, enables the number of photosensors and LEDs necessary for image analysis to be reduced to as few as one of each, and eliminates the need for analog shift registers, thus decreasing the cost, size and complexity of the device.