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| Patent # | Description |
|---|---|
| US-4,123,751 |
Electronic display apparatus including a DC-responsive
electro-luminescent phosphor screen Drive circuits for a flat panel display using a matrix of DC responsive phosphor dots are disclosed. Enabled row conductors receive a pulse of DC potential equal... |
| US-4,123,750 |
Signal processor for position encoder A signal processor for an incremental encoder to provide output signals representing absolute position in any of a plurality of selectable scales and formats. In... |
| US-4,123,749 |
Method and system for determining the presence of objects within a
particular surveillance area, in particular... A surveillance system for preventing shoplifting comprises marking elements made of material of high magnetic permeability attached to the goods in a store, and... |
| US-4,123,748 |
Burglar alarms utilizing ultrasonic waves Burglar alarms utilizing ultrasonic waves in which ultrasonic waves transmitted from a wave transmitting oscillator are reflected by such objects as doors,... |
| US-4,123,747 |
Identity verification method and apparatus An improved method for verifying the identity of a prospective terminal user presenting an identification card or a credit card and a memorized personal... |
| US-4,123,746 |
Thermal relay and automobile cornering lamp control utilizing the same A thermal relay having main contacts and normally closed auxiliary contacts, a thermally responsive actuator for sequentially operating the main and normally... |
| US-4,123,745 |
Vehicle theft prevention system An automatic theft prevention system for use in a vehicle powered by an engine that includes an ignition system operative from an ignition switch which is closed... |
| US-4,123,744 |
Method and apparatus for dynamically investigating a borehole An apparatus and method for investigating a borehole with energy transmissions whose directivity is varied in real time during the investigation is described. A... |
| US-4,123,743 |
Termination for an electrical resistance element A simple, low-cost U-shaped hook termination for enclosed resistance elements useful in household appliances. The termination is particularly useful with a... |
| US-4,123,742 |
Variable resistor A variable resistor has an insulating substrate plate, a resistance body formed on the substrate plate and a slider adapted to slide along the resistance body.... |
| US-4,123,741 |
Resistance element for variable resistors A resistance element for obtaining a continuous and linear output characteristic is obtained by the combination of a zig-zag resistance element and a resistance... |
| US-4,123,740 |
Adjustable potentiometer in an accelerator control An apparatus having an accelerator element has a potentiometer including an inner portion movable relative to an outer portion thereof in response to movement of... |
| US-4,123,739 |
Thermostat control A thermostat control to change the setting of a thermostat to a preselected point and automatically to return the thermostat to the original setting after elapse... |
| US-4,123,738 |
High voltage current limiting fuse An improvement in a high voltage, full-range, current limiting fuse of the type which includes a perforated ribbon main fusible element wound about a gas... |
| US-4,123,737 |
Bimetallic circuit breaker A bimetallic circuit breaker with an electrical insulating slide interposed between the contacts thereof in the contacts open position in which the terminals,... |
| US-4,123,736 |
Leakage reactance transformer This specification discloses a leakage reactance transformer for supplying electric arc welding current and comprising a core formed from a stack of laminations... |
| US-4,123,735 |
Induction-type meter for measuring mechanical quantities An induction-type meter for measuring mechanical quantities, comprising a first converter to convert the controlled parameter into a displacement and having... |
| US-4,123,734 |
Circuit breaker with improved latch mechanism A three pole molded case circuit breaker including a push-to-trip button, a flux transfer shunt trip mechanism, an undervoltage trip mechanism, and an improved... |
| US-4,123,733 |
Method of filtering analogue signals by transferring electrical charges
in a semiconductor medium A transversal filter utilizing a double tapped delay line, is provided. Input samples of analogue signals are successively introduced into a charge transfer... |
| US-4,123,732 |
Method of making tuned resonance passive electronic filters A method for making tuned resonance passive electronic filters. The method consists of computing the values of the filter components and then using standard... |
| US-4,123,731 |
Glass for use in ultrasonic delay lines A glass suitable for use in ultrasonic delay lines which comprises the components by weight, SiO.sub.2 42 to 27%, PbO 71 to 52% and preferably contains K.sub.2 O... |
| US-4,123,730 |
Slot transmission line coupling technique using a capacitor A novel technique for coupling microwave signals to a slot transmission line and for effecting a simultaneous impedance transformation. One lead of a microwave... |
| US-4,123,729 |
Displacement transducer The movable core member magnetically coupled to the inductance coil of a variable inductor element is adapted for operation by a monitored displaceable member.... |
| US-4,123,728 |
Electrogenerated chemiluminescent (ECL) laser A laser using electrogenerated chemiluminescence wherein an organic dye lasing solution is made to flow through or over alternately charged electrodes to charge... |
| US-4,123,727 |
Atomic standard with reduced size and weight An improvement in an atomic or molecular frequency standard, more particularly, the atomic hydrogen maser, by the use of electrode structures circumferentially... |
| US-4,123,726 |
Circuit for synchronizing the oscillation of an oscillator keyed by a
pulse, with a reference oscillation A circuit for synchronizing an oscillator keyed by a pulse is provided with a low amplitude reference oscillation. A phase shift regulating loop has a phase... |
| US-4,123,725 |
Phase locked loop system A phase locked loop system is described which controls and locks the frequency of a UHF transmitter to a desired frequency without the need for complex... |
| US-4,123,724 |
Communication equipment A television receiver is provided comprising a variable frequency local oscillator and frequency synthesizer control means for controlling the frequency of the... |
| US-4,123,723 |
Transistor amplifier circuit An amplifier circuit is provided with a first transistor receiving at the base an input signal and a second transistor related to its first transistor in... |
| US-4,123,722 |
Operational amplifier decoupling circuit A sample and hold circuit is disclosed which employs a matched pair of operational amplifiers as a decoupling circuit to isolate the output of the sample and... |
| US-4,123,721 |
Bias current compensated operational amplifier circuit Operational amplifier circuitry is provided which comprises an operational amplifier having a first input port and a second input port, and a compensating... |
| US-4,123,720 |
Method and apparatus for compensaton of effects of misalignment between
deflecting magnetic fields and a linear... A method for compensating the effects of misalignment between deflecting magnetic fields and a linear accelerator in a race track microtron where properly... |
| US-4,123,719 |
Chirp phase distortion detector in a wideband linearization feedback
control loop A phase distortion detector is used in a wideband feedback control loop to detect phase distortion on a wideband pulsed linearly frequency modulated waveform... |
| US-4,123,718 |
SSMA receiver with synchronous demodulation and variable gain control A receiver for electric oscillations modulated in SSMA technique with which, in an intermediate frequency position, a multiplier is provided for multiplying the... |
| US-4,123,717 |
Scanning receiver having priority channel indication in memory To program a scanning receiver for selected priority, a counter in the scanning control circuit is manually stepped to the channel to be selected for priority... |
| US-4,123,716 |
Automatic frequency control for digital tuning systems Apparatus is provided for automatically compensating for frequency drift in a digitally tuned varactor tuner. An Automatic Frequency Control signal for tuning... |
| US-4,123,715 |
Program apparatus for radio receiver using frequency synthesizer There is disclosed a signal-seeking superheterodyne radio receiver for use on the public service radio frequencies capable of scanning among a plurality of... |
| US-4,123,714 |
FM Receiver with liquid crystal signal indicator An FM receiver having a gate circuit extracting a pilot signal contained in a stereo composite signal and a circuit driving a liquid crystal display device with... |
| US-4,123,713 |
Memory type tuning system with provisions to facilitate setup In a memory type tuning system having memory locations for storing information corresponding to a limited number of preferred tuning positions, a display unit... |
| US-4,123,712 |
Symmetrical polyphase network A symmetrical polyphase R-C network, in which each section has a resistor serially connected between its input and output and a capacitor connected between the... |
| US-4,123,711 |
Synchronized compressor and expander voice processing system for radio
telephone The voice processing system for radio telephone consists of a compressor in the transmitter and an expander in the receiver. The compressor divides the input... |
| US-4,123,710 |
Partial response QAM modem A partial response QAM Modem is provided wherein a transmit signal is generated by modulating band limited, multilevel, partial response precoded data with... |
| US-4,123,709 |
Adaptive digital delta modulation for voice transmission An adaptive delta modulation system wherein the input analog signal is periodically sampled and a binary bit is generated for each period, the logic level of the... |
| US-4,123,708 |
Method and apparatus for eddy current inspection of hot test pieces with
means to cool the detector and to... An eddy current flaw detection apparatus which is particularly adapted for inspecting articles at elevated temperatures. A plurality of detectors are supported... |
| US-4,123,707 |
Magnetic field sensor housed in a cooling device for sensing the charge
in a shaft furnace or the like A magnetic field sensor housed in a cooling device has an inner core body for measuring the behavior of a charge put in a shaft furnace, an inner casing for... |
| US-4,123,706 |
Probe construction A probe for testing an electrical circuit includes a dielectric support body and a pair of spring arms each having an inner end fixed to the support body and an... |
| US-4,123,705 |
Oscillographic apparatus for measuring the magnitude and duration and
for separately viewing an input signal An oscilloscope includes means for intermittently or periodically adding electrical values to the horizontal and vertical deflection signals thereby producing a... |
| US-4,123,704 |
Frequency deviation digital display circuit A circuit is provided for monitoring a signal generated by an oscillator and producing a digital display of the sign and magnitude of the deviation of the actual... |
| US-4,123,703 |
Microwave method of and apparatus for flaw detection A microwave flaw detector system and method are disclosed which include the use of a pair of parallel strip transmission lines which are located a parallel... |
| US-4,123,702 |
Method for classifying and measuring of timbers Lumber is classified in terms of knots. The method used employs high frequency radio energy and a detector responsive to phase to detect the energy passing... |
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