Abstract: An insulated transmission medium for propagating ultrasonic vibrational waves and conducting electromagnetic energy in a multiplex type communication system, whereby said medium is a metallic strip that interconnects an ultrasonic wave transmitting transducer, a D.C. power source, an ultrasonic wave receiving transducer and the controlled loads.

Abstract: An insulated transmission medium for propagating ultrasonic vibrational waves and conducting electromagnetic energy in a multiplex type communication system, whereby said medium is a metallic strip that interconnects an ultrasonic wave transmitting transducer, a D.C. power source, an ultrasonic wave receiving transducer and the controlled loads.

Abstract: An optical scanning apparatus embodied in a gyroscopic missile seeker to provide a rosette scan pattern of the field of view. A single driving motor is employed with a traction drive assembly to produce the necessary counter-rotation of scanned elements and thereby effect the rosette scan pattern.

Abstract: A novel pseudobinary alloy of Pb.sub.1-x M.sub.x S, wherein 0<x<1 and M is selected from the group consisting of Sr and Ca, exists as a single phase at all compositions. With change in composition of Pb.sub.1-x Sr.sub.x S, the energy gap at 300K has been found to change continuously from 0.4 eV for PbS to 4.6 eV for SrS. For compositions with x.ltoreq.0.2, p-type and n-type thin films have been prepared by doping with Tl or Ag and with Bi, respectively. Similar single phase behavior and composition dependence of the energy gap is found with Pb.sub.1-x Ca.sub.x S.

Abstract: An optical scanning apparatus embodied in a gyroscopic missile seeker to provide a rosette scan pattern of the field of view. A single driving motor is employed with a traction drive assembly to produce the necessary counter-rotation of slightly canted scanning elements and thereby effect the rosette scan pattern. A canted primary focusing mirror is directly driven by the motor and is connected through a traction drive to a canted secondary mirror to effect proportional counter-rotation of the secondary mirror.

Abstract: Ultrasonically welded thermoplastic materials are nondestructively inspected by sensing the infrared radiation emitted from the weld region of the material during or immediately subsequent to the welding operation. The sensed radiation levels are compared with a predetermined value and if they exceed the predetermined value are indicative of an acceptable weld. If the sensed radiation peak does not exceed the predetermined level, the weld is deemed to be unacceptable.

Abstract: A lamp assembly for containing a plurality of light emitting lamps associated with distinct light emitting areas on a lens element and associated reflectors to direct the light towards the lens element. The light reflector element is formed of an electrically conducting sheet material subdivided into a plurality of electrically isolated areas for each defined light emitting area wherein each subdivision provides separate electrical connection between an externally supplied voltage source and its associated lamp.

Abstract: Acoustical transmission loss of sheet materials in the low frequency range is measured by utilizing a cylindrical test chamber containing a speaker directed towards the upper end to which the sheet material is mounted. Pressure gradient microphones are mounted on either side of the sheet material and are connected to electronic circuitry for responsively indicating the transmission loss measurement across said sheet material.

Abstract: A radiation sensitive detector employed with a thermal radiation scanning system to receive images that are scanned across said detector at predetermined velocities. The detector is sensitive to these scanned images and generates minority photocarriers that drift along the length of the detector in the opposite direction as a majority carrier flow caused by an applied biasing field. The cross-section of the detector is non-uniform along its length direction so that the density and velocity of the photocarrier packets may be appropriately controlled over the length of the detector.

Abstract: A system for laser scanning a relatively movable reflective surface element and inspecting that surface by monitoring the reflected energy in both light and dark channel receivers. Flaws occurring on the surface of the element, depending on the types of flaws, cause various frequency components to be present in the reflected energy and affect the amount of energy reflected to the light and dark channel receivers. Circuitry is included to detect and classify the various types of flaws as they are scanned, to compute the condition of the inspected element and to grade that inspected element as being in an acceptable state or in one of a plurality of unacceptable states. The described reflective surface element is a silicon wafer of the type used as the base substrate in fabricating integrated circuits and other electronic components.

Abstract: A thin film electroluminescent device constructed on a smooth surface substrate on which a base conductive layer is formed, followed in sequence by an impurity doped barrier layer, an electrically resistive layer and a counterelectrode layer. The impurity doped barrier layer is doped with a material which exhibits electroluminescence.The impurity doped barrier layer is produced in a controlled oxidation process of the base conductive layer which is alloyed to a minor extent with the impurity material.

Abstract: A lamp dimmer control utilizing a variable resistor and an associated adjustment mechanism having an ambient light sensor mounted integral to the control so as to receive ambient light external to the control housing via a translucent adjustment mechanism. Constant contrast illumination control is achieved by pulse width modulation techniques in accordance with the output of the variable resistance setting and the output of the ambient light sensor.

Abstract: An amplifier circuit for use with variable inductance type position sensors and others which provide modulated carrier outputs, whereby the circuit is conditioned by the cyclical modulation output from the sensor. The circuit condition sets a threshold level based upon the signal output from the sensor so that the signal from the circuit is a voltage replica of the input signal that is enhanced to have predetermined and constant high and low peak values without regard to peak value variations in the cyclical signal received from the sensor.

Abstract: A device for preventing any false disarming signal from reaching a firing circuit disarming device in an air bag inflation system. Disarming signals must coincide with the completion of a short-to-ground path through one of the crash sensors before the firing circuit is disarmed.

Abstract: A reflective type light modulator utilizing the principal of ion injection from a switching electrode into a fluid dielectric to effect turbulent forces and the resultant movement of a light reflecting object into and out of a light path. The fluid dielectric and the movable object have similar values of specific gravity.

Abstract: A liquid flow sensor produces output signals which are monitored over a known volume of flowing liquid. That monitored signal value is scaled according to a predetermined volume of liquid to provide a correction factor, whereby the output signal of the flow sensor is continually corrected to provide an expected number of flow sensor pulses per unit volume.

Abstract: A light modulator utilizing the principal of ion injection from a switching electrode into a fluid dielectric to effect turbulent forces and the resultant movement of a light interrupting object into and out of a light path. The fluid dielectric and the movable object have similar values of specific gravity.

Abstract: A method of manufacturing a hollow spark plug body having a cylindrical central portion (28), a first end portion (10) of smaller circular radial cross-section and a second end portion of non-circular radial cross-section, e.g. hexagonal, and of smaller maximum diameter than the central portion by cold extruding the both end portions. The second end portion is extruded in two stages, the first involving the formation of a recess in one end of a cylindrical blank, the second involving extrusion the blank between a die (19) and a mandrel (21) which moves with the blank during extrusion.

Abstract: A clutch assembly for use in a high speed starter motor/turbine assembly wherein the elements thereof must be extremely well balanced. Opposing clutch elements are unitary rigid structures without moving parts. The starter motor rotor and one of the clutch elements are assembled as a unitary balanced structure for high speed rotation and axial movement to engage or disengage the other clutch element and its associated balanced turbine load.

Abstract: A tape deck which incorporates a take-up reel rotation sensing switch and associated sensing circuit for enabling the capstan and take-up reel drive mechanism includes a sensing switch which only rotates with the take-up reel when it is driven in the take-up direction. If the take-up reel changes direction, due to tape windup on the capstan, the switch does not rotate and the sensing circuit disables the drive mechanism to prevent excessive tape windup on the capstan.