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| Patent # | Description |
|---|---|
| US-4,004,193 |
Voltage surge arrester with capacitive grading and improved sparkover
for fast impulses The arrester includes a plurality of gap units and nonlinear resistance valve units connected in series between the line voltage and ground. A series line of... |
| US-4,004,192 |
Protector module for telephone systems An improved telephone line protection device including means for grounding excessive currents and voltages. The disclosed embodiment includes ... |
| US-4,004,191 |
Method of reducing current unbalance in a three-phase power transmission
line operating with one faulty phase A method for reducing current unbalance in the electric system of a three-phase A.C. power transmission line operating in an incomplete phase regime using the... |
| US-4,004,190 |
Electrical amplifiers An amplifier circuit for amplifying a repetitive alternating signal, the amplifier circuit having a voltage feedback loop which includes a sampling circuit. The... |
| US-4,004,189 |
Three-electrode short duration flash tube A flash tube having an elongated tubular envelope containing a pair of anode electrodes disposed at opposite ends and a centrally located cathode electrode which... |
| US-4,004,188 |
Starting circuit for inverter operated gaseous discharge lamps A circuit arrangement for starting a linear metal halide arc discharge lamp while in a transistor switching bridge inverter circuit in the running inverter mode.... |
| US-4,004,187 |
Push-pull inverter ballast for arc discharge lamps A push-pull ballast for an arc discharge lamp has a high power portion comprising a semiconductor switching inverter and transformer means for step-up or... |
| US-4,004,186 |
Vacuum fluorescent display having a grid plate coplanar with the anode A vacuum fluorescent display is disclosed having a grid plate substantially coplanar with the anode and which is controllable with conventional metal oxide... |
| US-4,004,185 |
Electric lighting systems A method and apparatus of lighting a cold cathode electric gas discharge lamp in which the lamp is connected across the secondary winding of a voltage step-up... |
| US-4,004,184 |
Apparatus for operating gaseous discharge lamps on direct current from a
source of alternating current A system providing flickerless operation of a gaseous discharge lamp utilizes a DC voltage applied across the lamp electrodes. Low starting voltage and power... |
| US-4,004,183 |
Resistor built-in spark plug A resistor built-in spark plug comprising an insulator formed therein with an axially extending bore, a terminal nut fitted in an upper end portion of the bore,... |
| US-4,004,182 |
Operation of storage tubes having secondary electron emissive targets A method of operating a storage tube having a secondary electron emissive storage target includes applying selected bias voltages to the target during the... |
| US-4,004,181 |
Hyperfrequency resonant system for accelerating a charged particle beam
and a microton equipped with such a system The present invention relates to an hyperfrequency resonant system designed to accelerate a beam of charged particles, and comprising at least a first resonant... |
| US-4,004,180 |
Traveling wave tube with rectangular coupling waveguides A broad-band, low-reflection energy coupling or decoupling with a coupled cavity line in a traveling wave tube, particularly high-efficiency traveling field... |
| US-4,004,179 |
Slow wave circuit having serially connected contrawound two-turn helices As part of a microwave frequency device, such as a traveling wave tube, a novel slow wave structure is presented which comprises an electrically conductive wire... |
| US-4,004,178 |
White light source A white light source is described in which a trivalent metallic ultraphosphate is irradiated with a low voltage electron beam. The metallic ions are generally... |
| US-4,004,177 |
Television camera tube target support A television camera tube in which the electrode which is positioned in front of the photosensitive layer is connected to the envelope by means of lug-shaped... |
| US-4,004,176 |
Stripe-shaped color separation filter for image pickup tube and method
for manufacturing the same A stripe-shaped color separation filter for use with an image pickup tube is disclosed which is covered at its one surface with a layer of transparent material... |
| US-4,004,175 |
High voltage particle accelerator utilizing polycrystalline
ferroelectric ceramic material An apparatus is disclosed which utilizes the high voltage generated by the mpingement of illumination upon a polarized polycrystalline ferroelectric ceramic... |
| US-4,004,174 |
Rotary anode structure for an X-ray tube An X-ray tube includes a rotary anode structure having a rotary target. The target includes an electron receiving layer made of a tungsten based alloy and a... |
| US-4,004,173 |
Niobium alumina sealing and product produced thereby A closure member of refractory metal comprising essentially niobium is sealed over an aperture in an envelope of high alumina content refractory oxide material... |
| US-4,004,172 |
Gas discharge electron gun for generating an electron beam by means of a
glow discharge A gas discharge electron gun for generating an electron beam by secondary emission from an active surface of a cathode which is surrounded by a cathode sleeve... |
| US-4,004,171 |
Gas-and/or vapor discharge lamp The invention relates to a gas and/or vapor discharge lamp which is provided with a discharge tube and an outer bulb which envelops this tube, whilst the heat... |
| US-4,004,170 |
MOSFET latching driver An MOSFET latching driver circuit is disclosed which employs a depletion mode FET load bistable latch whose first node drives a depletion mode FET device and... |
| US-4,004,169 |
Holder for anchoring leads to dynamoelectric machines An insulating holder with channels to receive and secure splice connectors joining conductors, each channel having a continuous band of material at its opening... |
| US-4,004,168 |
Electric rotating machine A self-starting unidirectional electric motor in which a pair of auxiliary stator pole members are angularly spaced from the main stator poles and are provided... |
| US-4,004,167 |
Permanent magnet stators Annular magnets, primarily for motor stators, are centrifugally cast from particulate materials and synthetic plastic materials. Iron particles and ferrite... |
| US-4,004,166 |
Method for stabilizing the vibration frequency of a tuning fork-type
quartz crystal oscillator A method for stabilizing the vibration frequency of an oscillator which contains a tuning fork-type quartz crystal element comprising a pair of arms each having... |
| US-4,004,165 |
Ultrasonic signal generators A piezo electric signal generator and receiver assembly for a flaw detector has a generator adjacent to the crystal transducer and a cable connection to a... |
| US-4,004,164 |
Compensating current source The disclosed circuit is to provide a current source for use on a semiconductor chip having field effect transistors (FET) deposited therein to compensate for... |
| US-4,004,163 |
Time delay, charge, transfer circuit A time delay circuit comprising an improved charge transfer scheme for use in a microelectronic circuit, such as, but not limited to, a calculator, and the like.... |
| US-4,004,162 |
Clock signal reproducing network for PCM signal reception A clock signal reproducing network for PCM signal reception is capable of reproducing a clock signal even if the clock component is absent in the input digital... |
| US-4,004,161 |
Rectifying circuits A rectifying circuit comprises a high gain A.C. amplifier having first and second rectifying means connected in respective negative feedback paths between its... |
| US-4,004,160 |
Switching system to short-circuit a load with minimum residual voltage A controlled main switch, typically a semiconductor switch, is connected in parallel to the load. In accordance with the invention, an auxiliary switch,... |
| US-4,004,159 |
Electrically reprogrammable nonvolatile floating gate semi-conductor
memory device and method of operation A semiconductor memory device comprising a composite structure of semiconductor-insulation layer-floating gate-insulation layer-control gate, in which a... |
| US-4,004,158 |
Keyed comparator In the "on" condition of the circuit, a current mirror supplies a bias current to a comparator, a voltage divider circuit supplies a reference voltage to one... |
| US-4,004,157 |
Output circuit for charge transfer transversal filter The output circuit includes a high gain differential amplifier having an inverting input terminal, a non-inverting input terminal and an output terminal with a... |
| US-4,004,156 |
Single bus DC control circuit A DC control circuit supplies direct current of either polarity at a high or a low level to a crane hoist or the like via a single bus bar to control up, down,... |
| US-4,004,155 |
Bipolar regulated high voltage power supply Two sources of current are applied to a load. One source supplies a constant current which is at least equal to the maximum current to be supplied to the load in... |
| US-4,004,154 |
Fissionable mass storage device An apparatus for the safe storage of a plurality of fissionable masses including an array of discrete neutron absorbing shields which utilizes the principle of... |
| US-4,004,153 |
Apparatus for monitoring a web of material Apparatus for monitoring a web of material for faults which affect the remission and/or reflection of light incident on the material. Light from two light... |
| US-4,004,152 |
Apparatus for monitoring a moving web of material for faults Apparatus for inspecting a web of material for faults or aberrations which affect the remission and reflection of light incident on the material. A first... |
| US-4,004,151 |
Detector for deep well logging A substantial improvement in the useful life and efficiency of a deep-well scintillation detector is achieved by a unique construction wherein the steel cylinder... |
| US-4,004,150 |
Analytical multiple component readout system The present invention contemplates an arrangement for analyzing a plurality of components in a single specimen which comprises placing a diluted specimen into a... |
| US-4,004,149 |
Apparatus for displaying image produced by electrically charged particle
beam A beam of electrically charged particles for illuminating a specimen is deflected by a deflection means so that the specimen is scanned with the beam... |
| US-4,004,148 |
Accumulation mode charge injection infrared sensor The present invention relates to an accumulation mode charge injection device utilizing the extrinsic photoconductivity of a doped semiconductor material to... |
| US-4,004,147 |
Logging subsurface formations for porosity A borehole logging tool includes a source of fast neutrons and two thermal neutron detectors. A count rate meter is connected to each thermal neutron detector. A... |
| US-4,004,146 |
Infrared gas analyzing photometer with chopper designed to avoid
radiation waste An infrared gas analyzer is provided with a first path for reference radiation and a second path for measuring radiation. A source emits infrared radiation into... |
| US-4,004,145 |
Nil-luminance lighting panel A transparent prismatic low luminance lighting panel having on the outer or light-emissive surface thereof a plurality of refracting prismatic elements in the... |
| US-4,004,144 |
Fluorescent light unit A fluorescent light unit which is adapted for use in a conventional table lamp, hanging fixture, or wall fixture, and which includes a centerpost structure with... |
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