Abstract: A liquid-cooled eddy-current coupling device is disclosed, having a field coil and rotatable inductor and rotor members within a housing, with the rotor member having a tubular extension with an exterior circumferential groove disposed to direct liquid coolant away from the field coil.

Abstract: A cylindrical lens-prism light-line generating apparatus utilizing a slit-type aperture provides for origination, collimation and projection of a light-line which cooperates with a light localizer beam in aid of aligning an X-ray beam path preparatory to radiography.

Abstract: An X-ray collimator is disclosed having longitudinal and cross shutter assemblies disposed between an input port and an output port. Image area boundaries are defined by two pairs of inner edge portions. Mating inner edge portions of each pair move in an essentially rectilinear path.

Abstract: A sensor for transcutaneous measurement of physiological phenomena of living tissues is provided with a thermostatically-controlled electric heater. The purpose of the heater is to induce local hyperemia to enable operation of the sensor. The heater is thermostatically controlled. An independent temperature sensor is provided to disable the heater in the event of catastrophic failure of the thermostat circuit.

Abstract: A nonplanar ring laser for use as a laser gyro includes an even number of at least six reflecting surfaces which are preferably all made from the same coating batch or coating run so that they have substantially the same anisotropy characteristics. The mirrors are divided into pairs of mirrors, and the mirrors in at least each pair must match in their anisotropic characteristics. Note that the matched mirrors need only be in the laser path but not necessarily adjacent.The nonplanar geometric arrangement of the reflecting surfaces is such that the reflecting plane of incidence of each mirror is at substantially a right angle to the reflecting plane of incidence of at least one of the adjacent mirrors in the laser path. Note that the reflecting plane of incidence of each mirror may optionally be at right angles to the reflecting planes of incidence of both its adjacent mirrors in the laser path.The angles of incidence of the mirrors in each matched pair must be substantially the same.

Abstract: An improved device for measuring the tightening angle on a wrench. The directionally fixed member is a liquid body which may include solid particles or a turbine wheel, the relative velocity of which is monitored to determine the relative motion of the liquid with respect to the wrench.

Abstract: A ring laser gyroscope system is provided in which four frequencies of oscillation are allowed to simultaneously propagate within the ring laser cavity, with two modes propagating in each direction. Separation of the resonant frequencies is accomplished through reciprocal, nonreciprocal, and anisotropic optical effects within the laser path, plus Zeeman effect produced by a magnetic field in a predetermined intensity range over the laser gain plasma. The magnetic field substantially parallel to the laser path over the gain medium reduces the effects of hole burning or source depletion when the amplitudes of the field is within a predetermined intensity range to allow frequencies of the four modes to be spaced closer together. The system employs cavity length control circuitry to optimize system output. Rotation of the system results in frequency changes which are detected and processed to yield inertial rotation information.

Abstract: In the method of manufacturing an electronic vacuum device of the type containing at least one component element comprising a matrix of solid or hollow glass fibers bonded together in a fused matrix, in which device at least one end of said matrix is located within or forms a boundary to a region in-vacuum, including the step of applying microwave energy radiation to said glass matrix for removing water vapor and other gas molecules from said matrix.

Abstract: Inverter-rectifier combinations of the type which include at least a pair of transistors for alternately applying DC current to a transformer to generate alternating voltage from a DC source, and a digital semiconductor type driving means for alternately providing voltage pulses of given duration and at a periodic repetition rate at each of two outputs for controlling such alternating operation of the transistors is improved in a combination containing a protective circuit located in between the driving circuit and the inputs to the inverter transistors.

Abstract: Three electrically isolated photosensitive diodes on a common substrate are located directly behind a multilayer dielectric coated mirror that is one of the reflective elements of a ring laser. A small percentage of the beams incident on the mirror is allowed to pass through and strike the photosensitive diodes. Two of the diodes are masked in such a way as to detect the heterodyne beat signal of two counterrotating beams in the ring laser and generate an output signal used to determine rate of rotation of the ring laser body. The third diode sums the intensity of the counterrotating beams and generates an output signal which goes to a feedback cavity length control circuit.

Abstract: A novel structure in a coaxial to waveguide transmission line transition includes a waveguide section having longitudinally extending ridges on two opposed walls; a metal impedance transition member extending from one wall of the waveguide having a geometry within the waveguide of three right cylinders of dissimilar size stacked upon one another to form a steplike arrangement and a central passage therethrough; a dielectric cylindrical member extends into said waveguide from an opening in a waveguide wall opposed to that of the transition member and is in abutting relationship with the end of said impedance transition member; an elongate rodlike conductor extends axially through said dielectric member and said impedance transition; further each of the longitudinally extending waveguide ridges includes an outwardly flared portion of increasing width, one of which abuts the periphery of the lower step of said transition member and the other of which is spaced a predetermined distance from said dielectric member

Abstract: A shuttle assembly for use on a computer operated crane in an automated warehouse system. The crane has an elevatable platform and is movable along an aisle with horizontal storage racks on each side of the aisle. The racks include a plurality of vertical storage compartments. A shuttle assembly is mounted on the elevatable platform and comprises pins of two different heights carried on each of two adjacent counter rotating chains positioned on the bed of the elevated platform for pulling storage pans onto or pushing off the shuttle on computer command. Angle supports are included and are positioned one above each chain for supporting and guiding the pans while on the shuttle. An improved unitary material handling pallet or pan is provided for cooperation with the shuttle.

Abstract: A programmable character display module for the lighted display of changeable indicia, where the display can have particular use in a switch assembly.

Abstract: A photoelectric sensing apparatus for a pallet carrying robot vehicle is disclosed. The sensing apparatus includes a plurality of photoelectric sensors mounted on the robot vehicle for sensing the location of stored pallets mounted on storage rails in order to signal the control logic to stop the robot vehicle at a desired position. If the robot vehicle is unloaded, one sensor functions to sense the location of a stored pallet after the robot vehicle has moved directly under the stored pallet. If the robot vehicle is loaded, another sensor functions to sense the location of a stored pallet immediately before the robot vehicle reaches the same. Each sensor comprises a light transmitter for projecting a light beam along a first axis, and a receiver sensitive along a second axis to receive a reflected light signal and generate an electrical signal in response thereto.

Abstract: The perfusion rate in animal tissue is measured percutaneously at a specific locus, and at the same time the indicator concentration is percutaneously measured at the same locus so that the perfusion efficiency factor can be determined. Apparatus for carrying out the above method is also disclosed comprising, in combination, a first and a second wall means defining a first and a second surface, each placed in contact with animal tissue to be measured and respectively cooperating with first and second sensor means so that the temperatures of said surfaces can be compared and simultaneously processed with the measurement of the indicator concentration performed by a separate measuring means also in contact with the tissue, so that the perfusion efficiency factor can be determined.