Abstract: A clevis, particularly for a turbomachine includes a body that is attachable to a casing and at least one aperture for fitting a hinge pin. The body is formed in one piece and includes, about the at least one aperture, a honeycomb-type annular portion. The annular portion acts as a vibration filter and has a compressive and/or flexural strain capacity greater than that of the rest of the body.

Abstract: A clevis, particularly for a turbomachine includes a body that is attachable to a casing and at least one aperture for fitting a hinge pin. The body is formed in one piece and includes, about the at least one aperture, a honeycomb-type annular portion. The annular portion acts as a vibration filter and has a compressive and/or flexural strain capacity greater than that of the rest of the body.

Abstract: A connecting rod, in particular for a turbine engine, includes an intermediate body with a general elongated shape. Connecting heads may be located at the longitudinal ends of the elongated shape, which may include holes having axes that are, for example, substantially parallel. The connecting rod is characterized in that the heads are assembled or formed as a single piece with at least one part of the body. At least one of the heads includes an alveolar annular part, about the axis of the hole, forming a vibrating filter and having a flexural and/or compressive deformation capacity greater than that of the rest of the connecting rod and, in particular, that of the body.

Abstract: Disclosed is a control circuit for control of a semiconductor switching device, such as an IGBT. The control circuit comprising a first feedback path between a first electrode and a control electrode of said semiconductor switching device which has a capacitance. The circuit is operable such that the capacitance in the first feedback path is dependent on the voltage level at said first electrode. In another embodiment the control circuit is operable such that a feedback signal begins to flow in the first feedback path immediately as the semiconductor switching device begins switching off, thereby causing a control action on the semiconductor switching device.

Abstract: Disclosed is a control circuit for control of a semiconductor switching device, such as an IGBT. The control circuit comprising a first feedback path between a first electrode and a control electrode of said semiconductor switching device which has a capacitance. The circuit is operable such that the capacitance in the first feedback path is dependent on the voltage level at said first electrode. In another embodiment the control circuit is operable such that a feedback signal begins to flow in the first feedback path immediately as the semiconductor switching device begins switching off, thereby causing a control action on the semiconductor switching device.

Abstract: A man portable device for detecting the presence of hazardous material includes a pulsed or time-modulated light source and an objective scannable across the surface of a sample for projecting light from the light source onto a succession of spots on the surface of the sample. A spectrometer performs a spectral analysis of the induced fluorescence to create a first dataset defining a first vector as a function of wavelength. A time domain detector for measuring the time decay of the induced fluorescence collected simultaneously creates a second dataset defining a second vector as a function of time. A computer identifies hazardous material by performing independent multivariate analysis on the first and second vectors as the objective is scanned across the sample surface based on fluorescent signal models for hazardous materials in the spectral and time domains.

Abstract: A method and system for objectively scoring intra-operative pain during general anaesthesia based on the patient's mean arterial pressure and heart rate. The index is used for closed-loop control of the intra-operative analgesia through adjustment of the drug infusion level according to fuzzy logic. It is further displayed along with other components of anaesthesia and important patient data on a monitoring display for presentation to medical staff.

Abstract: An apparatus to obtain images of a target by an underwater video camera in a waterproof container wherein the target is illuminated by a laser beam. The shutter of the video camera is kept closed until a laser pulse has covered the distance to the target and nearly back to reduce the effect of reflection of the laser pulse by particles in the water. A holographic beam shaper in the path of the laser beam before a diverging lens is used to provide a 4 by 3 aspect ratio the same as the camera to illuminate the target.

Abstract: An apparatus to obtain images of a target by an underwater video camera in a waterproof container wherein the target is illuminated by a laser beam. The shutter of the video camera is kept closed until a laser pulse has covered the distance to the target and nearly back to reduce the effect of reflection of the laser pulse by particles in the water. A holographic beam shaper in the path of the laser beam before a diverging lens is used to provide a 4 by 3 aspect ratio the same as the camera to illuminate the target.

Abstract: A neuromuscular monitoring system comprises at least one neurostimulator to apply muscle-activating stimulation signals to a patient's body via at least one electrode, and at least one pressure waveform sensor to detect pressure waveform signals produced by a patient's muscle in response to the applied stimulation signals. The detected pressure waveform signals are processed and data related to these detected pressure waveform signals are displayed. A method for neuromuscular monitoring using pressure waveform sensors is also described.

Abstract: A guidance system for a missile with a laser beam source located at a distance from the missile generating a modulated laser beam that is directed towards the missile. A group of backward looking sensors on the body of the missile detect any radiation scattered from the laser beam along with a group of forward looking sensors located on the missile. Both groups look at an angle to the missile's longitudinal axis. Signals from the sensors are applied to processing electronics in the missile that determine the phase shift in signals derived from when a backward looking sensor detects scattered radiation from a laser beam and a forward looking sensor detects scattered radiation from that beam. The processing electronics can then accurately determine the distance between the missile and the beam from the phase shift and correct the missile's trajectory to maintain its position with respect to the beam.

Abstract: A guidance system for a missile with a laser beam source located at a distance from the missile generating a modulated laser beam that is directed towards the missile. A group of backward looking sensors on the body of the missile detect any radiation scattered from the laser beam along with a group of forward looking sensors located on the missile. Both groups look at an angle to the missile's longitudinal axis. Signals from the sensors are applied to processing electronics in the missile that determine the phase shift in signals derived from when a backward looking sensor detects scattered radiation from a laser beam and a forward looking sensor detects scattered radiation from that beam. The processing electronics can then accurately determine the distance between the missile and the beam from the phase shift and correct the missile's trajectory to maintain its position with respect to the beam.

Abstract: A neuromuscular monitoring system comprises at least one neurostimulator to apply muscle-activating stimulation signals to a patient's body via at least one electrode, and at least one pressure waveform sensor to detect pressure waveform signals produced by a patient's muscle in response to the applied stimulation signals. The detected pressure waveform signals are processed and data related to these detected pressure waveform signals are displayed. A method for neuromuscular monitoring using pressure waveform sensors is also described.

Abstract: A controllable camera support including a pivoting arm adapted to be rotatably connected to a pivot point defining a first rotational axis. The pivoting arm also defines a radial axis. The camera support also includes a camera holder mounted on the pivoting arm. The camera holder is displaceable along the radial axis. The camera further includes motors coupled to the pivoting arm and to the camera holder. The motors are adapted to impart rotational and radial motions to the camera holder. The camera support also includes a control device for controlling the motors. The invention also covers a system further including a focal adjustable, rotational, tilting camera mounted on the camera holder. When a target that is focused by the camera becomes obstructed, the control device is adapted to move the camera to another position all the while focusing on the target.

Abstract: The machine includes a rotor of the flux concentration type. Six permanent magnets of the high-energy type are mounted on a shaft. Between the magnets are placed pole pieces made of ferrosilicon magnetic sheets. A stator is composed of ferrosilicon magnetic material in which are formed a plurality of half-closed slots which receive inducted windings. An air gap is formed between the rotor and the stator. The ratio r.sub.1 of the height of the section of the magnets through which the induction flux passes to the width of the air gap is between 0.281 and 0.344.

Abstract: A catalyst for recombining oxygen and carbon monoxide in a sealed CO.sub.2 laser includes a stannic oxide base and a coating of at least one metal selected from the group consisting of platinum, palladium, ruthenium, gold and rhodium. The stannic oxide base is produced by preparing a mixture of a stannous salt such as stannous chloride and stannic acid, adding a base to the mixture to produce a mixture of stannic and stannous hydroxide, and adding an oxidizing agent such as hydrogen peroxide to the hydroxide mixture to yield a precipitate of stannic oxide. The stannic oxide is mixed with a catalyst metal salt such as the chloride of one of the metals mentioned hereinbefore, and a reducing agent, e.g. formic acid is added to the oxide and salt mixture to produce the salt, whereby the catalyst metal is deposited on the stannic oxide.

Abstract: In a process for desulphurizing gases containing SO.sub.2 and SO.sub.3 by absorption of the sulphur containing compounds by means of absorbents based on alumina free of alkaline substances, activated alumina or alumina carrying salts or oxides of at least one element selected from the groups IB, IIB, IVB, VB, VIB, VIIB, VIII of the Periodic Classification, the absorption takes place at temperatures comprised between 100.degree. and 400.degree. C., and the absorbent loaded with said compounds in the form of sulphates is heated with a gas containing a reducing gas, especially H.sub.2 S, to a temperature of 250.degree. C. to 450.degree. C., while the elementary sulphur thus formed is separated from said absorbent, whereafter the latter is re-used in a subsequent absorption operation.

Abstract: The Claus process for the production of sulphur is improved by employing a deoxidation catalyst prior to the conventional Claus oxide catalyst.