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4547831 |
Surge arrester
A surge arrester includes an elongated insulating housing comprising one or more stacks of electrically series-connected metal oxide varistor blocks arranged between a top terminal and a bottom...
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4484247 |
Nonfragmenting station arrester
A lightning arrester of the station class is equipped with a ceramic housing protective heat shield liner formed of an ablative material capable of giving off a gas when subjected to a fault...
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4476513 |
Surge arrester
A surge arrester comprises two or more surge arrester units which are electrically series-connected between a top terminal and a bottom terminal. Each surge arrester unit comprises a stack of metal...
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4471402 |
Disconnector for surge arrester
A disconnector for a surge arrester explosively separates an electrical lead wire, normally a ground lead wire, from the arrester to prevent a permanent fault and to provide an indication of a...
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4463405 |
Fail safe surge arrester
A surge arrester including an outer porcelain housing and an ablative heat shield liner is disclosed herein along with a number of techniques for making the surge arrester break resistant. In...
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4463404 |
Surge voltage arrester with shielding bodies enclosing a column of arrester elements
A surge voltage arrester, with a column of arrester elements arranged in a housing and several shielding bodies enclosing the column, includes voltage controlling elements arranged between the...
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4424547 |
Surge suppressor construction
This surge suppressor comprises a tubular insulating housing having a metal end cap at one end and an integral end wall at its opposite end. A metal terminal extends through the end wall and has a...
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4396865 |
Therminoic fault current limiter and method of current limiting
A thermionic fault current limiter utilizes either a vacuum or plasma environment for a plurality of spaced conduction electrodes. The electrode can be supported by insulative spacers with the...
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4385338 |
Power connector with overvoltage protection
A power connector for providing overload protection for an electrical operating station connected to a power mains, composed of at least one overvoltage arrester of a first type which is capable of...
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4367431 |
Multistage spark gap with delay cables
The spark gap device disclosed herein comprises at least two sets of electrodes enclosed within a common chamber. A delay line is connected between successive sets of electrodes. An arc which...
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4363069 |
Overvoltage arrester with arrester elements in a frame comprising columns
Disclosed are overvoltage arresters comprising a columnar arrangement of arrester elements, insulating elements and conducting elements. The elements are arranged to provide a current flow in at...
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4356527 |
Valve arrester
A valve arrester comprises a serial arrangement which includes at least one nonlinear resistor and spark gaps implemented as arcing horns which are housed in slit-type arc extinction chambers whose...
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4340924 |
Grading means for high voltage metal enclosed gas insulated surge arresters
Capacitance grading is provided within gas insulated lightning arresters containing stacked zinc oxide varistors by means of a grading ring electrically connected to the line terminal or, for...
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4326232 |
Lightning arrester
A lightning arrestor comprising at least two stacks of resistor disks juxtaposed within a housing and electrically connected in parallel. The stacks include the same number of disks, at least 35,...
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4306267 |
Arrester
An arrester comprises a plurality of blocks connected in parallel between first and second connecting metal plates and each comprised of a plurality of stacked nonlinear resistor elements, at least...
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4240124 |
Surge arrester having coaxial shunt gap
A surge arrester of compact construction includes a housing formed preferably of elastomeric material through which a pair of spaced terminals protrude and between which a stack of metal oxide...
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4234902 |
Enclosed lightning arrester
A lightning arrester enclosed in a grounded metal enclosure filled with SF 6 includes six nonlinear resistors of sintered ZnO serially interconnected in superposed relationship between a high...
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4232351 |
High-voltage crowbar circuit with cascade-triggered series ignitrons
A series string of ignitrons for switching a large current at high voltage to ground. Switching is initiated by means of a negative trigger pulse applied to the cathode of the lowest voltage level...
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4228478 |
Overvoltage arrester
An overvoltage arrester wherein the arrester comprises an insulating housing which encloses a body of cast resin in which is embedded a voltage dependent resistor and a first connecting device, a...
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4223366 |
Gapless surge arrester
A gapless surge arrester is disclosed herein and includes a porcelain outer casing and a stack of zinc oxide discs located within the casing for passing surge currents therethrough. Silicon...
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4188561 |
Station protector spark gap applique
An applique or attachment for a station protector spark gap device includes an insulated enclosure housing a gas tube spark gap device together with fail safe shorting means located...
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4174530 |
Voltage surge arrester device
Voltage surge arrester devices having predetermined shunt gap sparkover voltages are provided by the series combination of high- and low-exponent varistors. In one embodiment the high-exponent...
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4159510 |
High-intensity lamp having high pulse repetition rate and narrow pulse-width
A high intensity light source having high repetition rate and narrow pulse-width. The light source comprises a metal casing having coaxially mounted arcing electrodes therein which utilize the...
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4158872 |
Surge diverter
A surge diverter connected between a conductor and ground comprising several spark-quenching gaps, voltage-controlled shunting resistors connected in series with these gaps and voltage controlled...
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4136299 |
Lightning arrester device
A grounded cylindrical metallic housing is hermetically closed at one end and an electric insulation hermetically extends through the other closed end of the housing to form in the housing a space...
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4134146 |
Surge arrester gap assembly
Surge arrester spark gap assemblies for use within surge voltage arrester devices employ the gap electrode structure to direct the arc current flow.
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4132915 |
Spark gap protector
A spark gap protector includes a gas tube spark gap device received in a supporting base. A failsafe device for permanently shorting the spark gap protector to ground after an extended discharge...
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4107567 |
Surge protector
A surge protector or arrester for providing surge protection for relatively low voltage or secondary equipment, circuits and systems includes a vertically stacked, parallel arrangement of two,...
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4100588 |
Electrical overvoltage surge arrester with varistor heat transfer and sinking means
The arrester comprises an insulating housing with end terminals and a plurality of varistors inside the housing electrically connected between the terminals. The varistors are provided individually...
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4092694 |
Overvoltage surge arrester having laterally biased internal components
Flat internal components of an arrester are stacked longitudinally inside the insulating housing cylinder with a perimeter portion contacting the inside wall of the housing. Each component has a...
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4072996 |
Method and arrangement for arc quenching in arresters
An electrical arrester includes one or more pairs of electrodes disposed within quenching chambers which form current-limiting quenched spark gaps connected in series with an associated blow-out...
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4052639 |
Spark gap for achieving arc elongation and compression without the use of supplementary magnetic means
A current limiting spark gap for use in a valve type lightning or surge arrester includes a plurality of identical, mirror-image insulating gap plates assembled together to define arc elongation...
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4029997 |
Surge voltage arrester arrangement
An improved surge voltage arrester made up of a plurality of series arrays of magnetically blasted spark gaps arranged between two potentials with the gaps surrounded by a gas which increases their...
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4017767 |
Laser lightning rod system
A system utilizing ionization produced by beams from laser and laser-like devices to pre-determine the course of stepped leader and lightning channel development, thereby affording protection of...
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3967160 |
Electrical overvoltage surge arrester with a long time constant valve section and series gap section
The arrester includes a valve section made up of high current-voltage characteristic exponent metal oxide varistor valve blocks having a relatively high capacitance and a series gap section made up...
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3963965 |
Surge arrester construction
An arrester is provided in a staggered stack of two columns of elements alternately disposed at substantially 90° with respect to each other in successive levels of the columns. Plates of...
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3912965 |
Spark gap device for lightning arrester
A spark gap device for a lightning arrester comprising a first spark gap having a uniform electric field characteristic and a second spark gap connected in parallel with the first spark gap and...
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3889148 |
TRANSIT TIME AMPLIFIER TUBE HAVING AN ATTENUATED DELAY LINE
A transit time tube, in particular a traveling wave amplifier tube has a delay line consisting of a hollow tube of circular inner cross-section which is divided by successive transverse elements...
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3883774 |
Lightning arrester spark gap
A lightning arrester spark gap comprising an arc interrupting chamber with at least two electrodes the working surfaces whereof extend in the direction of stretching the arc. The gap also comprises...
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3863105 |
COAXIAL MARX-BANK DRIVER CIRCUIT FOR PULSE LASERS
A flashlamp pumped laser system having a laser medium requiring optical ping pulses of short duration, fast risetime, and high peak power which uniquely incorporates a low inductance, coaxially...
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3859569 |
OVERVOLTAGE SURGE ARRESTER WITH IMPROVED VOLTAGE GRADING CIRCUIT
An overvoltage surge arrester for relatively high voltage applications is provided with a voltage grading circuit comprising a relatively low exponent resistor in parallel with a relatively high...
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3852635 |
TRANSIT-TIME AMPLIFIER TUBE WITH STABILIZED DELAY
A transit-time amplifier tube with a delay line arranged between an input wave guide and an output wave guide and with adjustable wave reflectors for adjusting the frequency-dependent gain employs...
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3848174 |
HIGH VOLTAGE SOLID-STATE RECTIFIER SYSTEM
A high voltage solid-state rectifier includes multiple series connected ac-compensated diodes and series buffer resistors in a stepped spiral stack. The stack is encased in a sectionalized faraday...
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3848156 |
SURGE ARRESTOR FOR HIGH VOLTAGE ELECTRIC POWER APPLICATIONS
A surge arrestor for high voltage electric power applications comprises series-coupled uncontrolled discharge devices each of which is shunted through resistors by a string of avalanche diodes...
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3845345 |
FREQUENCY SENSITIVE PREIONIZER
This frequency sensitive preionizer uses integrated circuitry in providing a resistance, a capacitance, and a preionizing spark gap deposited on an insulating base. The capacitance is connected in...
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3842318 |
SHIELDED METAL ENCLOSED ELECTRICAL EQUIPMENT
A high voltage electrical device, such as a lightning arrester, enclosed in a grounded metal enclosure filled with a pressurized dielectric gas. The device is provided with an asymmetrical shield...
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3819987 |
SPARKOVER STABILIZING MEANS FOR AN UNGRADED SURGE VOLTAGE ARRESTER
An ungraded surge voltage arrester having a plurality of series connected sparkgaps is provided with sparkover stabilizing means that are effective to raise the minimum power frequency sparkover...
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3811070 |
LASER INITIATED THREE ELECTRODE TYPE TRIGGERED VACUUM GAP DEVICE
A three electrode triggered vacuum gap device with the triggering mechanism being laser initiated. The triggering mechanism comprises a gas-saturated portion, which when heated by a triggering...
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3811064 |
SPARK-GAP DEVICE
A miniature three-element spark-gap device comprises a ceramic enclosure supporting aligned end electrodes extending therewithin, and a solid disc center electrode establishing first and second...
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3798505 |
LOW VOLTAGE SURGE ARRESTER
A secondary surge voltage arrester having a high impact resistant molded housing that is provided with supporting struts for mounting a sparkgap assembly in a desired, predetermined spaced...
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