Abstract: An optical module inspection circuit on an optical platform includes an optical module carrier for precisely aligning optical devices with optical interfaces of inspection equipment located at fixed positions in the optical module inspection circuit. The module-includes an apparatus for conveyance along a top surface of the optical platform. The module may be conveyed automatically to predetermined positions on the optical platform to automate alignment and positioning of optical devices with respect to optical inspection stations in the optical test circuit.

Abstract: A gas pressure regulator capable of minimizing vibration and improving overall fluid flow efficiency. The gas pressure regulator achieves these benefits using varying techniques including providing a nozzle having a primary passage, a secondary passage, and a flow channel groove to smooth the fluid flow, reduce turbulence, and improve overall flowrate, without adversely effecting the necessary backpressure required for reliable operation. Additionally, the gas pressure regulator may use angled walls in the low-pressure cavity to enhance deflection and distribution. Still further, the gas pressure regulator may use additional flow channels to permit smooth fluid flow while eliminating fluid impact.

Abstract: A gas pressure regulator has an inlet for connection to an upstream gas line for flow of gas into the regulator under pressure and an outlet for connection to a downstream gas line for flow of gas out of the regulator at a reduced pressure. A pilot mechanism delivers a desired pilot gas pressure through a pilot passage. A main valve mechanism regulates the flow of gas through a main flow passage connecting the inlet and outlet of the regulator. The regulator has a piston chamber, and a piston operatively connected to the main valve mechanism and movable in the piston chamber. The main valve mechanism has a passageway between the piston chamber and the pilot passage whereby the pilot gas pressure is adapted to move the piston and thereby position the main valve mechanism to regulate the gas pressure at the outlet of the regulator.

Abstract: A switchover valve for switching over from one supply of pressure fluid to another supply thereof in response to failing or failure of the one supply. The valve has a valve body having two inlets for connection thereto of the respective pressure fluid supplies and an outlet. A valve member is movable in the valve body between a position establishing communication for delivery of fluid from one inlet to the outlet and blocking flow from the other inlet to the outlet and a position establishing communication for delivery of fluid from the other inlet to the outlet and blocking flow from the one inlet to the outlet. The valve member is subject to pressure of fluid supplied to the one inlet for moving it from the first-mentioned position to the second-mentioned position and to pressure of fluid supplied to the other inlet for moving it from the second-mentioned position to the first-mentioned position.

Abstract: An optical module inspection circuit on an optical platform includes an optical module carrier for precisely aligning optical devices with optical interfaces of inspection equipment located at fixed positions in the optical module inspection circuit. The module includes an apparatus for conveyance along a top surface of the optical platform. The module may be conveyed automatically to predetermined positions on the optical platform to automate alignment and positioning of optical devices with respect to optical inspection stations in the optical test circuit.

Abstract: A cardiac valve comprises a ring, one or more flaps, the pivoting axis of the latter including two balls partly extending into a ring cavity and a conical flap cavity. This arrangement improves the life of the valve by reducing wear, stresses, friction and facilitates the assembly thereof if the ring is constituted by two concentric members and if the ring cavity extends on either side of the inner member. The invention more particularly applies to artificial valves installed in the heart in place of defective natural valves.

Abstract: An apparatus for securely mounting a compact, commercially available radar detector unit on either the handlebars or fairing of a motorcycle. The apparatus provides a sealed chamber, including a shock absorbing manner, for removably receiving the detector unit. When the apparatus is mounted on the motorcycle handlebars, a mounting assembly is provided which permits the unit to be positioned in various angular orientations. This enables the apparatus to be used on motorcycles with handlbars having widely varying rake angles.

Abstract: The device allows microsamples to be introduced into the ionization source of the spectrometer. It includes a reactor with means for introducing the microsample, means for heating the microsample, means for connection with a vacuum source and means for feeding an adjustable flow of reagent for transforming the microsample into gaseous compounds; a restricted and calibrated passage for flow of the gases from the reactor; and a sublimation tube connected on the one hand to the passage and, on the other, to the ion source of the spectrometer through a valve having means for bringing it to an adjustable cryogenic temperature.

Abstract: In connection with a pair of binoculars hung over a hunter's neck, a device for keeping the binoculars secured to the user's body, including a length of surgical tubing with a gripping piece installed within the tubing on both ends. Each gripping piece has a hole in it for the attachment of a metal ring to be connected to the binoculars and to a quick release mechanism to aid in the installation of the invention around the torso of the hunter.

Abstract: A digital processing circuit for aligning the d.c. component of an analog television signal. The analog signal is connected to one input of a differential amplifier. The output of the amplifier is connected to an analog to digital converter. The output of this converter forms the output of the entire circuit. A correction loop including an error detection circuit and a digital to analog converter is connected from this output to the second input of the differential amplifier. The error detection circuit includes an averaging circuit, a comparator, an adder and a memory register.

Abstract: The invention relates to an ion current measuring device.This device comprises a vacuum chamber, a diaphragm for introducing an ion beam into the chamber, means for collecting the ions from the diaphragm and located at the end of the chamber opposite to the diaphragm, and means for measuring a periodic voltage between the collecting means and the reference earth. It is characterized in that it also comprises means located between the diaphragm and the collecting means, for bringing about a periodic modulation of the intensity of the ion current circulating between the collecting means and a reference earth, the measuring means being current or frequency measuring means.Application to the measurement of ion currents, particularly in mass spectrometry.

Abstract: The invention relates to an ion source.This source comprises a gas ionization chamber, an electron source and means for oscillating the electrons in the chamber, so as to produce an ionization zone of the gas. The means for oscillating the electrons comprise two identical electron lenses, whose axes coincide with the oscillation direction, two spherical concave mirrors turned towards one another and positioned respectively on either side of the two lenses and whose centers respectively coincide with the foci of the lenses, the electron source being positioned at the focus of one of the two lenses.Application to the analysis of gases by mass spectrometry.