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7462991 |
Fluorescent lamp cathode and method of making cathodes
A method of making cathodes includes forming a first intermediate assembly having a current wire in juxtaposition with an outer mandrel wire and a basket wire wound around the first two wires. The...
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7456558 |
Electric incandescent lamp provided with different pitch factors for each end of a filament component
The invention relates to an electric incandescent lamp, in particular a vehicle headlight, having at least one incandescent filament which is arranged within a light-permeable lamp vessel, the at...
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7352846 |
Filament for X-ray tube and X-ray tube having the same
A coiled filament for an X-ray tube has a varied coil pitch to obtain a good uniformity of the longitudinal temperature distribution. The filament has a central region including plural turns having...
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7190117 |
Incandescent lamp having a carbide-containing luminous element
The incandescent lamp is equipped with a luminous element which is hermetically inserted in a bulb together with a filling, the luminous element having a metal carbide whose melting point is above...
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6984928 |
Coil filament
A coiled filament has a light emitter with a reduced volume as best possible to serve in downsizing a light bulb and elevate an illumination with high efficiency in an illuminated field. A flat...
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6922017 |
Infrared lamp, method of manufacturing the same, and heating apparatus using the infrared lamp
A material including a carbon-based substance and resins are mixed, and the mixture is extruded and dried, and the extrusion is sintered in an inert atmosphere, thereby obtaining a heating element...
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6853119 |
Double layer electrode coil for a HID lamp and method of making the electrode coil
A double-layer electrode coil for a high intensity discharge (HID) lamp and a method of making the electrode coil are provided. A more stable layer of coils is made by front winding, instead of...
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6809477 |
Fluorescent lamp electrode for instant start circuits
A fluorescent lamp ( 10 ) with improved life is formed by winding a coil ( 30 ) using first, second, and third mandrels ( 45, 46, 50 ), the third mandrel having a diameter of at least 1.0 mm. The...
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6784605 |
Halogen incandescent lamp and a lighting apparatus using the lamp
A halogen incandescent lamp comprises a light-transmitting envelope filled with a gas including a halogen gas and an inert gas. A pair of inner conductive wires is arranged in the envelope. A...
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6777860 |
Luminous element for lamp
A luminous element ( 10 ) for a lamp is double helix-shaped, with two connection parts ( 18, 20 ) situated at one end of said double helix. The diameter (D 1 , D 2 ) of the double helix increases...
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6690103 |
Incandescent light bulb with variable pitch coiled filament
An incandescent light bulb includes a lamp envelope, a coiled filament with a predetermined amperage rating disposed inside the lamp envelope, and current supply wires that electrically connect a...
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6426587 |
Thermionic emitter with balancing thermal conduction legs
A thermionic emitter has a flat emission surface that is subdivided by slits into generally spiral or serpentine conductor sections, the surface having legs extending therefrom that form part of...
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6191527 |
Stress relieved filament support assembly
The structure is an improvement to prevent thermal cycle damage to a braze joint in a magnetron filament assembly. The filament is welded to a molybdenum filament weld ring which, in turn, is...
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5962972 |
Electric incandescent lamp
The electric incandescent lamp has a lamp vessel (1) in which a filament (3) is disposed substantially concentric with the longitudinal axis (2) of the lamp vessel (1). Current conductors (4)...
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5959398 |
Cathode ray tube with improved cathode structure
A cathode ray tube is provided with an electron gun which comprises a cathode structure which contains an electron-emitting material at an end portion and in which a heating element of bifilarly...
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5936350 |
Metal halide headlamp
A metal halide headlamp comprising an electrode and a coil wrapping around said electrode to prevent the occurrence of cracks in a sealing portion, in which the diameter d 0 of said electrode, the...
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5923122 |
Electrodeless bulb with means for receiving an external starting electrode
An electrodeless lamp comprises an envelope containing a fill and a substance for facilitating the starting of the lamp. An outer tube is secured to an outside portion of the envelope in proximity...
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5864209 |
Cathode filament for an ultra-violet discharge lamp
A unique cathode (30) for an ultraviolet discharge lamp (10) is described. The cathode includes a triple-coil wire, i.e., the wire has a primary coil (43), a secondary coil (41) wound around the...
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5861716 |
Magnetron having a cathode mount with a grooved recess for securely receiving a cathode filament
A magnetron includes a cathode mount having a directly heated helical cathode filament for emitting thermoelectrons, an upper end shield and a lower end shield disposed so as to support the...
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5811934 |
Electric incandescent halogen lamp with barrel-shaped bulb
An electric incandescent lamp (4), in particular an incandescent halogen p, has a bulb or envelope (5), which is shaped as an ellipsoid or optionally ellipsoidlike (barrel-shaped body) and provided...
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5793161 |
High-pressure discharge lamp electrode
The high pressure discharge lamp has electrodes which each have a wrapping of tungsten wire near the tip of the electrode rod. The electrode rod has unround cross-sections, formed by indentations...
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5729082 |
Cathode structure comprising a heating element
A cathode structure comprises at an end portion (1) an electron-emitting material (4) and a heating element (5) of wire (7), said cathode structure having a plurality of primary helical turns (8)....
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5729081 |
Electrode coil for discharge lamps and method for producing such an electrode coil
The invention relates to electrode coils for discharge lamps having a coiled wire (1) which is wound around by a braiding wire (2). The coiled wire (1) has both turns (II) with an essentially...
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5680003 |
Coiled-coil filament design for an incandescent lamp
An improved coiled-coil filament for use in an incandescent lamp has a primary coil winding with a substantially uniform spacing between successive coil turns. The primary coil winding is wound...
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5629586 |
Compact fluorescent lamp unit having first and second sealed end portions separated by a support member
A compact fluorescent lamp unit has a phosphor coated bulb of which first and second sealed end portions. A pair of filaments is disposed in the bulb. The filament contains an emitter for enhancing...
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5510675 |
Flicker-suppressed, low-power, high-pressure discharge lamp
To reduce flicker in low-power, high-pressure discharge lamps, the electrs, in the region in which they face each other, have wrap windings, of about 2 to 4 turns wrapped thereabout and the...
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5453657 |
Indirectly-heated cathode heater structure for a cathode ray tube
This invention relates to an indirectly-heated cathode heater structure comprising a heat generation section disposed inwardly of an upper portion of a sleeve for generating heat to emit thermions...
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5426351 |
Heater coil for electron tube
A heater coil for an electron tube includes a spiral wire which is double wound to be cylindrical, and a connection wire which is formed on an upper face of the spiral wire in a horizontal plane....
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5357167 |
High pressure discharge lamp with a thermally improved anode
A high pressure discharge lamp with a thermally improved anode, as well as a method of making such a lamp, are disclosed. The lamp includes a refractory arc tube with a hermetically sealed arc...
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5343112 |
Cathode arrangement
A cathode arrangement for emitting electrons includes an electrode-conductive emission body that defines an emission surface from which the electrons propagate. A slit pattern is cut into the...
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5258687 |
Mercury vapor discharge device
In a mercury vapor arc discharge tube having a pair of electrodes, an emissive material disposed on the electrodes consists essentially of a single phase compound of Ba x Sr 1 -x Y 2 O 4 where x...
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5198720 |
Direct heating cathode structure for cathode ray tubes
A direct heating cathode structure for a miniature cathode ray tube is disclosed wherein angular rod-shaped supports where the coiled heater is welded are bent so that one edge thereof is directed...
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5172027 |
Wire shaped electron source
A wire shaped electron source includes a heating core wire, an insulator partially provided on the heating core wire, and an electron emission material provided on the heating core between the...
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5138221 |
Inorganically insulated heater, and cathode ray tube and air flow sensor using the same
The present invention relates to an inorganically insulated heater having a long life for use in air flow sensors, cathode ray tube cathode heaters etc., wherein the distribution of inorganic...
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5001397 |
High-pressure gas discharge lamp having electrodes with coil layers having interlocking turns
The high-pressure gas discharge lamp according to the invention has electrodes which comprise an electrode rod 24 and a helical winding 26 near its tip 25 projecting into the lamp vessel, both of...
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4973878 |
Filament structure and method of making such structure
A method of making an axial filament structure for a lamp in which the filament is concentric with the axis of the envelope, wherein a hook-like shape (131) is formed in a support member (117)...
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4939411 |
Composite vacuum evaporation coil
A composite vacuum evaporation coil including a base coil and an overwind coil is characterized by the overwind coil being independent of the power source and being confined to the area of the...
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4918354 |
Compact coiled coil incandescent filament with supports and pitch control
This invention provides an improved compact fine wire incandescent lamp coiled-coil filament and method for making the same. The filament has a secondary mandrel ratio in the range of about 3.0 and...
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4893057 |
High intensity discharge lamp and electodes for such a lamp
An HID lamp incorporates all-metal electrodes providing rapid transition of the arc to the electrode tip. The electrode comprises a length of thoriated tungsten wire having a close wrapped coil...
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4886995 |
Heater for indirectly-heated cathode
The improved structure of a heater for an indirectly-heated cathode which is used for CRTs or the like is disclosed. A core wire for a heater is wound around a mandrel into a primary winding so...
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4847534 |
High-pressure discharge lamp with torsionally wound electrode structure
The high-pressure gas discharge lamp according to the invention has electrodes comprising a rod of mainly tungsten and a helical winding of mainly tungsten near the tip of the rod. The winding has...
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4825119 |
Low consumption electron gun for cathode ray tubes
A low consumption electron gun is provided for cathode ray tubes. The heating filament of the cathode includes a resistant wire and lugs for connection to an electric energy supply. The resistant...
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4760306 |
Electron emitting filaments for electron discharge devices
Electrons are copiously emitted by a device comprising a loop-shaped filament made of lanthanum hexaboride. The filament is directly heated by an electrical current produced along the filament by a...
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4745325 |
Heater for indirect-heated cathode
Disclosed is a heater for indirect-heated cathode having a heating element composed of a wire with a high specific resistance, such as titanium or titanium-based alloy, around which another wire...
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4733124 |
Cathode structure for magnetron
A cathode structure for a magnetron representative of a self-oscillation type microwave electron tube comprises a pair of opposite end shields for supporting both ends of a filament helically wound...
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4728850 |
Mounting means for mounting spiral wire cathodes
In a mounting device for electrically heated, spirally wound wire cathodes in electron guns, two mounting posts joined together by an insulator are configured as sector-shaped sections of a hollow...
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4686412 |
Reflector-type lamp having reduced focus loss
This invention provides for an improved reflector-type lamp having reduced focus loss and exhibiting an increase in reflector collection efficiency. Stray light from the lamp's light source is...
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4683397 |
Compact incandescent coiled coil filament
This invention provides an improved compact fine wire incandescent lamp filament and method for making such having a primary mandrel ratio in the range of about 1.40 to about 4.00 and a secondary...
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4636749 |
Pulsed magnetron tube having improved electron emitter assembly
A tuning assembly (42) is disclosed for selectively oscillating the frequency of an electromagnetic field within a hermetically sealed pulsed magnetron (12), comprising a rigid, hermetically sealed...
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4611146 |
Indirectly heated cathode
An indirectly heated cathode including a conductive cup having a closed end provided with an exterior surface coating of electron emissive material and an electrically insulated heater element...
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