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...During the Civil War, the Confederacy established its own Patent Office which issued 266 patents, a third of which concerned implements of war.
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| Number | Title | Issue Date |
| 7466070 | Electron gun for cathode ray tube An electron gun includes a cathode adapted to emit thermal electrons, a first electrode and a second electrode adapted to form a triode portion together with the cathode, a plurality of focusing electrodes, each of said plurality of focusing electrodes being perfora... | 12/16/2008 |
| 7439664 | Low consumption cathode structure for cathode ray tubes Cathode structure for cathode ray tube comprising an eyelet in two separate parts positioned such that one of the parts covers, in the longitudinal direction and at least partially, the second part. The two parts are linked to each other at the shouldered ends. ... | 10/21/2008 |
| 7362044 | Electron gun for cathode ray tube and cathode ray tube with the same A CRT includes an electron gun that includes a cathode adapted to emit thermal electrons, a first electrode and a second electrode adapted to form a triode portion together with the cathode, a plurality of focusing electrodes, an anode electrode and a subsidiary ele... | 04/22/2008 |
| 7315113 | Color cathode-ray tube and method for producing the same A conductive film isolated from an inner conductive film is formed on an inner wall of a neck. Assuming that, among a plurality of focusing electrodes constituting an electron gun, a position in a tube axis direction of an end on an anode side of an anode-side focus... | 01/01/2008 |
| 7312564 | Cathode ray tube having an electron gun A cathode ray tube has an electron gun oriented along an axis (Z), comprising a quadrupolar device which comprises three electrodes (5, 6, 7). Each electrode possesses a central aperture, a right lateral aperture and a left lateral aperture all three substant... | 12/25/2007 |
| 7309953 | Electron beam pumped laser light source for projection television An electron beam pumped laser including a surface-emitting laser faceplate oriented at a non-perpendicular angle. Embodiments are described in which a bending coil bends the electron beam, or in which the faceplate is situated in the direct path of the e-beam emissi... | 12/18/2007 |
| 7276847 | Cathode assembly for indirectly heated cathode ion source A cathode in an indirectly heated cathode ion source is supported by at least one rod or pin. The cathode is preferably in the form of a disk, and the support rod is smaller in diameter than the disk to limit thermal conduction and radiation. In one embodiment, the ... | 10/02/2007 |
| 7242127 | Brush device and motor with brush A brush device having the longitudinal direction of a coil shaped coil spring aligned with the face of a brush holder, in which one end of a support post at the surface of a brush base is formed as a hollow cylinder and a projection at the other end is insert molded... | 07/10/2007 |
| 7227301 | Cathode-ray tube device capable of reducing misconvergence A cathode-ray tube device including a deflection yoke for deflecting an electron beam emitted from an electron gun in horizontal and vertical directions. The deflection yoke has a vertical deflection coil that deflects the electron beam vertically. The vertical defl... | 06/05/2007 |
| 7183703 | Cathode ray tube and manufacturing method of deflection coil A cathode ray tube comprises a panel having a fluorescent screen on an inner surface; a funnel connected to the panel, an electron gun housed in the funnel; emitting electron beams; and a shadow mask for selecting colors of the electron beams emitted from the electr... | 02/27/2007 |
| 7138768 | Indirectly heated cathode ion source An indirectly heated cathode ion source includes an arc chamber housing that defines an arc chamber, an indirectly heated cathode and a filament for heating the cathode. The cathode may include an emitting portion having a front surface, a rear surface and a periphe... | 11/21/2006 |
| 7061170 | Deflection yoke having magnets for correcting raster distortion and cathode-ray tube apparatus having the deflection yoke A permanent magnet is selectively picked for a deflection yoke and provided on the periphery of the cathode ray tube for controlling the direction of an electron beam emitted towards a screen from an electron gun. The permanent magnet can adjust an irradiating point... | 06/13/2006 |
| 7045943 | Electron gun for cathode ray tube having third to fifth electrodes with different sized electron beam through holes An electron gun for a cathode ray tube is disclosed, which has a simple structure and can prevent the spot on a screen from being degraded. In the electron gun for a cathode ray tube including a cathode that emits electron beams, a first electrode that controls the ... | 05/16/2006 |
| 7038368 | Color picture tube apparatus having a pair of bar shaped magnets for correcting misconvergence due to the rotational shift of the electron beams On an outer circumferential surface of a neck portion of a funnel, a CPU having a pair of quadrupole magnets and a pair of bar-shaped magnets each having magnetic poles on both sides in a major axis direction are provided. The pair of bar-shaped magnets sandwich the... | 05/02/2006 |
| 7038367 | Electron gun for cathode ray tube including electrodes with different dimensions An electron gun for a cathode ray tube includes a triode portion including cathodes, a first electrode, and a second electrode arranged with predetermined gaps therebetween. A plurality of electrodes arranged in sequence starting from a position adjacent to the seco... | 05/02/2006 |
| 6965192 | Color picture tube apparatus A color picture tube apparatus having an inline electron gun that allows technology for applying a dynamic voltage to an OLF lens to be implemented, while avoiding design difficulties. Eave-shaped electrode plates are attached, parallel with each other in a horizont... | 11/15/2005 |
| 6946784 | Electron gun of monochromic CRT The present invention is to provide an electron gun of a monochromic CRT comprising at least two electron emission sources (e.g., cathodes) for emitting beams having a small beam spot size and being adapted to impinge on the same spot of a screen of the monochromic ... | 09/20/2005 |
| 6943490 | Deflection yoke with improved deflection sensitivity A deflection yoke mounted on a rear portion of a cathode ray tube (CRT) to deflect an electron beam emitted from an electron gun of the CRT includes a coil separator mounted on the CRT, a horizontal deflection coil mounted on an inside of the coil separator, having ... | 09/13/2005 |
| 6943489 | High resolution CRT device comprising a cold cathode electron gun The CRT device comprises a cold cathode electron gun that includes cathodes, a peripheral focusing electrode, and an accelerating electrode. The cathode has a structure in which an emitter electrode and a gate electrode are joined together with an insulating layer i... | 09/13/2005 |
| 6927532 | Resistor for electron gun assembly with the resistor, and cathode-ray tube apparatus with the resistor A resistor for an electron gun assembly includes an insulating substrate, a plurality of electrode elements provided on the insulating substrate, a resistor element provided on the insulating substrate and having a pattern for obtaining a predetermined resistance va... | 08/09/2005 |
| 6924590 | Color picture tube device with distortion correction coils A color picture tube device has a funnel glass, a pair of horizontal deflection coils, an insulating frame, and a pair of vertical deflection coils. The pair of horizontal deflection coils are opposed to each other in a vertical direction around the outer surface of... | 08/02/2005 |
| 6924158 | Electrode structures A method of forming vertical knife-edge cold-cathode field emission electron sources with self-aligned gate electrodes and sub-micron electrode separations. The method exploits the enhancement of ion-beam erosion rates obtained in metals at oblique ion incidence, wh... | 08/02/2005 |
| 6917151 | Resistor for electron gun assembly, electron gun assembly, and cathode-ray tube A resistor for an electron gun assembly is configured to apply a voltage, which is divided with a predetermined resistance division ratio, to an electrode provided in the electron gun assembly. The resistor includes an insulating substrate, an electrode element prov... | 07/12/2005 |
| 6917148 | Oxide cathode for an electron gun, having a denser and thinner emissive zone Cathode comprising a substrate (2) supporting a cathode emissive coating, comprising what is called an emissive central zone (12) and what is called a nonemissive peripheral zone (11); according to the invention: | 07/12/2005 |
| 6891321 | Oil-free electron source having cathode and anode members adjustable with five degrees of freedom An electron source includes a vacuum chamber within which a vacuum is maintained by a vacuum pump. An insulated receptacle is mounted within the vacuum chamber and has a receptacle mounting flange. The receptacle mounting flange is used to establish a coordinate sys... | 05/10/2005 |
| 6888300 | Cathode ray tube A cathode ray tube includes a display for presenting an image, a deflection device, and an electron gun including electron-generating cathodes for generating electron beams. The CRT includes an electron beams controller for varying the trajectory of at least a first... | 05/03/2005 |
| 6870310 | Multibeam generating apparatus and electron beam drawing apparatus This invention provides a multielectron gun which generates a plurality of electron beams having uniform characteristics. A multielectron gun (2) is formed of a plurality of electron guns (2a-2c). The electron gun (2a... | 03/22/2005 |
| 6806635 | Fe-Ni-Cr- based alloy strip having improved press-formability and used for electrode of electron gun The Fe—Ni—Cr based alloy strip having improved press-formability is provided. The alloy strip essentially consists of from 15 to 20% of Cr, from 9 to 15% of Ni, the balance being Fe and unavoidable impurities, has 0.03% or less of cleanliness as stipulated under... | 10/19/2004 |
| 6777866 | Funnel structure of cathode ray tube A funnel structure of a CRT in which provided that a deflection angle is 110° or more, a length of an outer surface evaluation line formed by connecting a TOR outer surface end where the funnel yoke portion and the funnel body portion meet and a neck seal outer sur... | 08/17/2004 |
| 6756726 | Deflection yoke and cathode-ray tube apparatus with the same In a semi-toroidal deflection yoke, a middle point CL(M) of an entire length along a tube axis from a large-diameter portion to a small-diameter portion of a magnetic core lies on a small-diameter portion side of a horizontal deflection coil relative to a point lyin... | 06/29/2004 |
| 6750602 | Projection type cathode ray tube device employing a cathode ray tube having a neck composed of different-diameter portions A projection type cathode ray tube device includes a panel, a neck, a funnel connecting the panel to one end of the neck, and a stem closing the other end of the neck. An electron gun is housed in the neck for projecting an electron beam toward a phosphor screen on ... | 06/15/2004 |
| 6744190 | Cathode ray tube with modified in-line electron gun Cathode ray tube having an electron gun which is modified with respect to the electron gun having three equidistant cathodes lying “in line”. The cathode for generating the green (central) beam is offset with respect to its position in an in-line gun, and the gr... | 06/01/2004 |
| 6710533 | Flat cathode-ray tube, electron gun for flat cathode-ray tube and producing method thereof In a flat cathode-ray tube, there are problems that an axis of electron beam is separated before the electron beam enters a main lens due to magnetic field of a magnet disposed outside a neck, and coma aberration is generated to degrade an image quality. It is an ob... | 03/23/2004 |
| 6703776 | Cathode ray tube A cathode ray tube comprising an electron source and an electron beam guidance cavity having an input aperture and an output aperture, wherein at least a part of the wall of the electron beam guidance cavity near the output aperture comprises an insulatin... | 03/09/2004 |
| 6653771 | Electron gun assembly and cathode ray tube apparatus The electron beam generating section in an electron gun assembly includes a cathode having an electron emitting surface. The surface of the cathode is divided into at least three regions of first, second and third regions which have different electron emi... | 11/25/2003 |
| 6624561 | Color cathode ray tube having an internal voltage-dividing resistor A color cathode ray tube has an electron gun in its neck portion. Its focus electrodes and anode are fixed by two insulating support rods. A voltage-dividing resistor is disposed in the vicinity of one of the insulating support rods for producing an inter... | 09/23/2003 |
| 6621202 | Cathode ray tube apparatus including an electron gun assembly capable of dynamic astigmatism compensation A main lens is composed of a dynamic focus electrode, a first auxiliary electrode, a second auxiliary electrode and an anode, which are successively arranged in a direction of travel of electron beams. A sub-lens provided on a cathode side of the main len... | 09/16/2003 |
| 6617780 | Deflection yoke for braun tube and fabrication method thereof A deflection yoke for a Braun tube includes a primary 4-pole convergence yoke adapted to be positioned at a neck portion of a funnel of a Braun tube and a secondary 4-pole convergence yoke positioned in the vicinity of the funnel where horizontal and vert... | 09/09/2003 |
| 6600255 | Coil filament structure for an incandescent lamp In order to provide an incandescent lamp in which an unlit state of the lamp caused by a hang-out of the coil as well as a short lifetime thereof are prevented using a simple construction and its lifetime in practical application is long, a coil (21)-like... | 07/29/2003 |
| 6590329 | Deflection yoke with a low power consumption To realize an energy-efficient color cathode-ray tube, deflection power requirement is reduced for a deflection yoke that includes one or more bend-up-less saddle type coils in at least one of a horizontal deflection coil and a vertical deflection coil, w... | 07/08/2003 |
