Abstract: An ice detector probe senses an ice deposition from an air mass flowing relative to the probe. The probe includes a support for installation of the probe to receive the airflow and an element formed on a substrate having a sensing surface which directly receives the airflow. The element heats the sensing surface to melt an ice deposition formed thereon. The resistance element also senses the sensing surface temperature during heating and provides an output representative of such temperature.

Abstract: There is disclosed an apparatus for displaying a current location of a running body in which a constantly changing location of the running body on a two-dimensional coordinates is successively computed, while detecting a running distance of the running body and a running direction of the same, and the current location of said running body is displayed renewally, in accordance with the data thus computed, on a display screen having a map previously displayed thereon.

Abstract: An optical heterodyne or homodyne receiver includes a single constructively integrated optical component which combines a local oscillator beam with a signal beam to derive oppositely phased combined beams and further splits each of the combined beams into orthogonally polarized sub-beams. The integrated optical component has a polarization-sensitive beam-splitting layer in a first plane and a polarization-insensitive beam-splitting layer in a second plane, the two planes being perpendicular or parallel to each other.

Abstract: A low frequency pilot signal having predetermined positive and negative excursions is applied to an electrical modulation signal input (26) of a Mach-Zehnder electrooptic modulator (18) together with an electrical input signal. A bias voltage VB selected to bias the modulator (18) at a linear point (V.pi./2) is also applied to the signal input (26). The optical output signal of the modulator (18) is sensed, and the magnitudes of the positive and negative excursions of the output signal which correspond to the positive and negative excursions of the pilot signal are compared with each other. If the modulator (18) is linearly biased as desired, the excursions will have the same relative relationship as the excursions of the pilot signal. If the modulator (18) has drifted away from the linear bias point (V.pi./2), one excursion will have a larger magnitude relative to the other than in the pilot signal, indicating the direction of deviation.

Abstract: An infusion alarm includes an infusion bag formed between an infusion bottle and a needle or cannula insertable in a patient body, and an exhausting sensor having two leaves pivotally connected with each other for resiliently clamping the infusion bag having two contactors respectively connected to two poles of a power source connected to an alarm, whereby when the infusion liquid is being dripped to be almost exhausted as injected to a patient's body, the two leaves of the sensor originally separated by the clamped infusion bag may be restored to close the two contactors for sounding the alarm and alerting a nurse for renewing the infusion liquid.

Abstract: An auxiliary U-turn signal indicating light attachment having a generally U-shaped housing designed to be mounted on the lower left corner of the rear window of a vehicle, wherein an indicating light compartment encloses a U-turn signal indicating lamp. A manually operated switching apparatus for energizing the U-turn signal lamp is adapted for mounting on and interconnection with a conventional turn signal lever. A mounting bracket is pivotally secured to a rod slidably received within an apertured mounting tab within the housing, wherein a set screw associated with the mounting tab is utilized to secure the rod in a selected adjusted position. By virtue of this arrangement, the elevation and inclination of the housing on the intended mounting surface can be varied to enable usage with a wide variety of differently configured vehicles.

Abstract: A flight path angle symbol is positioned on an aircraft attitude display indicator as a function of either a measured flight path angle or a flight path angle commanded by the pilot. When the aircraft is operating within a selected airspeed, angle of attack, pitch attitude or load factor range, or the difference between measured flight path angle and commanded flight path angle is within a selected range, the symbol is positioned on the display as a function of commanded flight path angle. However when the aircraft is operating outside any of these ranges, the symbols is positioned on the display as a function of the measured flight path angle. To avoid a rapid jump in symbol position when transitioning between measured and commanded flight path angle displays, a phase lag filter is used to attenuate and lag the symbol positioning signal.

Abstract: An alarm system for an automotive vehicle including direct coupled input connections which provide a voltage proportional to the amount of current interchanged between the battery and the electrical system of the vehicle. An arming circuit is responsive to the voltage and arms the burglar alarm only when less than a predetermined current is interchanged between the battery and the electrical system. An alarm circuit produces an alarm when the alarm system is armed and more than a predetermined amount of current is drawn from the battery.

Abstract: An earthquake detector is provided, which can sound an alarm several seconds before the arrival of the major shock of an earthquake, and which can be easily adjusted for sensitivity. For detecting local earth shaking of at least a predetermined dangerous acceleration level that constitutes a significant danger, a detector is provided that responds to shaking motion of an acceleration level between one-half and one-eighth the predetermined dangerous acceleration level to detect P-waves that arrive before the destructive S-waves, and which generates an audible alarm upon such detection. In one detector, two mercury-type switches are mounted with their directions of sensitivity both horizontal but perpendicular, the switches being mounted on a circuit board that can be tilted to alter their sensitivities.

Abstract: A system for warning the pilot of a tactical aircraft in a tactical maneuver such as a dive of the point at which recovery must be immediately initiated to prevent the aircraft from descending below a minimum desired altitude monitors the altitude, descent rate and pitch angle of the aircraft, and issues a voice warning when recovery must be initiated. The system also provides warnings of dangerous flight conditions during non-tactical or common route segments of a flight such as the take-off, landing and cruise segments of a flight. Circuitry responsive to the arming of the weapons of the aircraft enables the tactical warning portion of the system and disables certain functions of the non-tactical portion of the system that may cause false warnings to be generated during tactical maneuvers.

Abstract: An allergen detector and allergen detection method for sampling the environment where the detector is located and providing an alarm indication when allergen particulates exceed a predetermined level. The invention comprises a housing having a passageway formed therethrough with a fan disposed in the passageway that is responsive to a flow control signal for creating air flow in a first direction through the passageway. At least one filter is disposed in the passageway for removing particulates larger than allergen particulates in air flowing through the passageway in the first direction. An allergen particulate detector is disposed in the passageway downstream of the filter, with respect to air flow in the first direction, for detecting allergen particulates in the air flowing through the passageway and for providing a corresponding detection signal.

Abstract: A method and an arrangement of automatic remote identification of separate objects or separate objects in a set of objects, each object being provided with identifier means comprising identifiers made by material with high magnetomechanical coupling, the identifiers preferably comprising a plurality of strips of said material, the resonant frequency thereof being tuned to correspond to the desired information specific to the object, said objects being disposed in an interrogation zone when identification is requested.

Abstract: A fluid mass flow sensor uses the effect of aerodynamic drag on a vibrating object. The drag damps the resonance oscillations of the vibrator in an amount proportional to the mass flow. An electronic feedback circuit associated with the mass flow sensor has the effect of allowing for fast response time despite the use of a high Q vibrator and allows for electronic calibration of the device.

Abstract: A portable ground-supported automobile traffic control device including an upright, double-sided human-shaped figure which is so constructed and configured as to simulate a traffic control officer, and having one arm and hand in a raised position and carrying thereon, back-to-back electrical stop-and-go traffic light signal units. The traffic light signal units face in opposite directions, and are powered by storage batteries in a base that is provided for the figure. An automatic controller is connected to the signal units and to the batteries, to effect synchronized stop, stop-and-go, or other displays on the traffic light signal units, thereby to provide visual directions to motorists for the orderly control of two-way traffic in the vicinity of the figure.

Abstract: A portable water-resistant device for signaling vehicles such as a taxi is formed of a lightweight, transparent plastic and is battery powered. The signaling device is provided with a first housing, a second housing movable relative to the first housing, the first housing containing a light source and a power source and reflective symbols affixed to the outer face of the first housing. The light source is selectively electrically connectable to a power source, such as a battery, which is activated when the second housing moves relative to the first housing and contact points extending from battery terminals and protruding through the first housing meet with contact points of the second housing. Additionally, in another embodiment the signaling device may be provided with an outer movable housing having a switch, an inner housing containing a light source and a power source electrically connected to the switch, and reflective symbols on the outer face of the inner housing.

Abstract: Timing and warning system for use on a track involving a plurality of vehicles (12,13,14) including a series of stationary transceivers (15) located at selected locations along the track (11) and a mobile transmitter (18) located in each vehicle.

Abstract: A multifunctional basketball game monitoring unit that allows automatic scoring taking into account foul shots, and position sensitive shots and also allows scoring of shots missed with a programmable control processing unit allowing for a great variety of differing output statistics both to visual display and to a printer and also allowing a variety of audio choices as programmed or as entered on a keyboard to the controller.

Abstract: Temperature data of each picture element output from a infrared camera looking at a scene to be watched is compared with the same data of a previous frame. Temperature data which has changed from the previous frame is input to a histogram operator having a region defined by the temperature change and quantity of the picture elements. When the quantity of picture elements in the defined region exceeds a threshold level, it is recognized that a certain object having considerable temperature change and size has been detected. Thus, a signal is output to trigger an alarm system, or to sustain circulating frame memories which have recorded the previous scenes so that the scenes of visible light as well as the temperatue patterns for frames before, on, and after the trigger signal can be reproduced as visual images of a display screen.

Abstract: Disclosed is an improved interlocked zooming apparatus used in a two-barrel type stereo scopic camera. The improved interlocked zooming apparatus includes an adjusting apparatus for adjusting the range of movement of one of the zoom lenses and an automatic image magnification adjusting apparatus for matching the rates of the change in size of images formed by two cameras. Since the sizes of the images in each of the wide-angle end and the telephoto end are first made uniform by the adjusting apparatus before sensing an image, the sizes of the images formed by both the cameras are uniform over the entire zoom region.

Abstract: An ultrasonic sound producing apparatus for mounting on a vehicle to warn animals of the approach of the vehicle includes (a) a housing, (b) an electrically actuated member for generating an electric tone, and (c) a base for supporting the housing and for mounting the apparatus to a vehicle. In a preferred embodiment, the tone generating member includes a piezoelectric crystal.