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8080941 |
Cold cathode lamp, and illumination device for display device and display device provided therewith
The cold cathode lamp includes a light-transmissive insulating tube; the first and second internal electrodes disposed inside the insulating tube; the first and second external electrodes disposed...
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8072346 |
LED light bar for optical traffic control systems
Various approaches for activating a traffic control preemption system. A light bar includes a support structure and a plurality of LED modules individually mounted on the support structure. Each...
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6972808 |
CRT assembly of projection television
A cathode-ray tube (CRT) assembly of a projection television includes a CRT for creating an image, a lens for magnifying the image created in the CRT and projecting the image onto a screen, and a...
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5325024 |
Light source including parallel driven low pressure RF fluorescent lamps
A fluorescent light source includes multiple fluorescent lamp tubes driven in parallel by a single RF source. The fluorescent lamp tubes can be twin tube fluorescent lamps or straight fluorescent...
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4503318 |
Apparatus for the spark perforation of sheet materials
Apparatus for spark perforation of sheet material comprising spaced apart first and second electrodes which define between them a sparking zone through which sheet material to be perforated can be...
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4465954 |
Discharge lamp starting and operating circuit
Apparatus for starting and operating a discharge lamp includes a starting device having bimetals and a rigid conductive member forming a switch, a ballast coupling the switch to an AC source and a...
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4358701 |
Discharge lamps having internal starting aid capacitively coupled to one of the electrodes
A fluorescent lamp assembly is comprised of a lamp and a ballast therefor. The lamp includes an internal, solid wire starting aid connected to third lead-in wire sealed in an end of the lamp. A...
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4287454 |
High pressure discharge lamps with fast restart
A light source including two high intensity discharge devices, such as metal vapor discharge tubes, electrically coupled in parallel to provide fast restart and immediate illumination after a...
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4117370 |
Discharge lamp having a glow discharge starter within the outer envelope
A high-pressure sodium vapor discharge lamp which is provided with a discharge tube and an outer envelope which envelopes this tube.In accordance with the improvement there are disposed in the...
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4065692 |
Spark gap assembly for voltage surge arresters
A spark gap assembly of a stack of insulating plates which have on one surface thereof a pair of electrodes preassembled and affixed thereto with a defined spark gap therebetween and a piece of...
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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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3979646 |
Surge voltage arrester
A surge voltage arrester having a gas-tight housing includes a pair of electrodes arranged at a distance opposite one another and with their active surfaces facing one another. The electrodes are...
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3968393 |
Spark gap device for a lightning arrestor
Within an arc extinguishing chamber are disposed a pair of main electrodes so as to cause a spark starting gap to be defined therebetween. A single auxiliary electrode is also disposed so as to...
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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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3828219 |
VOLTAGE SURGE DISSIPATOR
A transient voltage surge dissipating assembly for dissipating surges of high voltage electrical energy occuring at the terminal pins of an electron tube. The apparatus has a precisely formed air...
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3818166 |
CONTACTS FOR VACUUM INTERRUPTER OF SMALL OUTSIDE DIAMETER
A vacuum type circuit interrupter is provided having separable mating contacts. Multiple arc rails are attached to each contact, the arc rails extend from the contact to which they are attached...
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3801854 |
MODULATOR CIRCUIT FOR HIGH POWER LINEAR BEAM TUBE
A high power linear beam tube; to be modulated, such as a high-power klystron, has its cathode directly connected with the depressed collector electrode of a modulator tetrode tube and its anode...
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3760223 |
SINGLE CONDUCTOR MULTI-COIL MULTI-BEAM MICROWAVE DEVICE
A traveling wave tube is provided with a low-wave, electron beam interact means in the form of a single wire conductor coiled into at least two parallel series of aligned turns; in each series, the...
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3758803 |
ELECTRIC DISCHARGE DEVICES
An electric discharge device has a cold cathode of solid, easily vaporizable material, and a triggering arrangement comprising a dielectric member, disposed near the cathode and anode, and having...
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3749962 |
TRAVELING WAVE TUBE WITH HEAT PIPE COOLING
A method and apparatus for efficiently removing heat from a traveling wave ube. A copper barrel heat sink casing is concentrically disposed about an inner glass or quartz tube with an annular space...
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3663856 |
CURRENT LIMITING SPARKGAP WITH MEANS FOR REGULATING GAP VOLTAGE
A surge voltage arrester, such as a lightning arrester, is provided with a sparkgap assembly having a plurality of matched pairs of arc-confining chambers that are operable to regulate movement of...
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3662215 |
A TRIGGERING CIRCUIT FOR TRIGGERING SERIES-CONNECTED SPARK GAPS
A chain of series-connected spark gap piles have two grading chains in parallel therewith with connections therebetween. An arrangement is provided for triggering one of the spark gap piles. When...
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3626237 |
LINE ELECTRICAL SURGE ARRESTOR
An electrical surge arrestor in which a line electrode is serially connected in the line and a second electrode of predetermined diameter spaced from the line electrode forms a discharge gap.
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3586903 |
SPARK GAP DEVICES
Electrical devices and methods and apparatus for making the same, involving the support of conductive portions in an insulating member. Spark gap devices are constructed by moving heated rigid...
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3571952 |
ELECTRODE HOLDER FOR USE WITH AN INTERMITTENTLY OPERATED SPARK GAP
An electrode holder arrangement with two spaced electrodes defining a spark gap therebetween and provided with an insulator means within the spark gap for defining a spark waveline path. The...
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3569786 |
HIGH VOLTAGE ARRESTER
A safety device for safeguarding communications equipment and other electrical machines and instruments when an abnormal voltage is impressed on a system of lines lightening or other phenomena. The...
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3551821 |
ARC TRIGGER SQUELCH FOR A TELEVISION RECEIVER
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3534221 |
LIGHTNING ARRESTER CONFIGURATION
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3510726 |
GRADING AND CASCADING CIRCUIT FOR LIGHTNING ARRESTERS HAVING A PLURALITY OF SPARK GAPS
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3501667 |
SURGE PROTECTOR FOR SECONDARY VOLTAGE CIRCUITS
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3497771 |
SERIES CAPACITOR PROTECTOR USING DAMPING RESISTOR COIL COMBINATION
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3588576 |
SPARK-GAP DEVICE HAVING A THIN CONDUCTIVE LAYER FOR STABILIZING OPERATION
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3564682 |
METHOD OF MAKING A SPARK GAP
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3484842 |
METHOD OF MAKING CAPACITORS
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3480832 |
ELECTRICAL SURGE ARRESTOR
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3467877 |
LIGHTNING ARRESTER WITH THE FRUSTOCONICAL SURFACE OF THE PARALLEL ELECTRODES BEING EXPOSED TOWARD EACH OTHER AT THE NARROW END OF A DIVERGING SPARK SLOT
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3450929 |
SPARK GAP DEVICE HAVING INSULATORS IN THE FORM OF PLASTERS
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3447032 |
HIGH-VOLTAGE PULSING APPARATUS FOR A SPARK CHAMBER
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3431452 |
HIGH-POWER SURGE ARRESTER
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3419752 |
Multiple spark printer
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3413524 |
Apparatus for providing a protective spark gap for a d.c. powerline
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3400297 |
Traveling-wave type electron tube utilizing interaction between beam and te20 waveguide mode
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3350496 |
Lightning rod with great ionizing power
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3343366 |
Spark discharge monitoring device
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3322995 |
Electronic component and method of manufacture thereof
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3312868 |
Electrical surge arrester
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3292049 |
Spark gap
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3271642 |
Electrical capacitors
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3267324 |
Ignition device for reducing the corona effect on high tension cables
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3266121 |
Method of making a capacitorresistor construction
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