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...Daniel Webster invented a "bull plow" to pull out tree stumps. It didn't catch on because it was huge and required four oxen to pull it!
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| Number | Title | Issue Date |
| 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 |
| 7274559 | Cover for reducing contamination in a plasma display device and plasma display device employing the cover A cover for reducing contamination in a plasma display apparatus including a frame with a printed circuit board, signal transmission cables and buffer substrates arranged on one side thereof and including a guiding portion for guiding the cables is provided. The cov... | 09/25/2007 |
| 7265485 | Electron gun assembly for cathode ray tube An electron gun assembly for a cathode ray tube includes a cathode for emitting an electron beam, and a plurality of electrodes mounted in a row with predetermined gaps therebetween. The electrodes include a focus electrode for receiving a focus voltage, and an anod... | 09/04/2007 |
| 7176613 | Electron tube having linear members A fluorescent display tube is disclosed. In the fluorescent display tube, linear members, such as, for example, wire grids and filament are sustained in a predetermined height, while both ends of each linear member are welded on a metal layer by ultrasonic. The fluo... | 02/13/2007 |
| 7088034 | Cathode-ray tube employing a separate grid structure to stabilize cathode current An electron gun assembly that emits three electron beams, which are arranged in line, toward a phosphor screen includes three cathodes arranged in line, three first grids arranged to face the associated cathodes, and a second grid with an integral structure that is ... | 08/08/2006 |
| 7075221 | Projection tube having different neck diameters The present invention aims at maintaining the high focusing performance at a low deflection power in a single-beam projection tube which is used as a projection type TV receiver or a projector and is operated at a high voltage and with a high current. The neck outer... | 07/11/2006 |
| 7042146 | Electron gun structure for a cathode-ray tube The disclosure describes an electron gun having cathode support structure which comprises an eyelet that surrounds a cathode and is welded to the cathode, and a metal plate 150 substantially parallel to the longitudinal axis of the gun. The metal plate has a ... | 05/09/2006 |
| 7002288 | Electron tube and method for producing the same An electron tube includes at least one metal film formed on a base, at least one linear member provided above the base, and at least one additional member for connecting said at least one linear member to said at least one metal film. The at least one linear member ... | 02/21/2006 |
| 6998767 | Projection tube having different neck diameters A projection tube having a high focusing performance at a low deflection power includes a funnel, a neck portion and a stem portion which seals the neck portion. The neck portion of the projection tube includes a first neck portion which is connected to the funnel a... | 02/14/2006 |
| 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 |
| 6952077 | Electron gun for cathode ray tube An electron gun for a cathode ray tube includes a cathode for radiating electron beams, a scanning velocity modulation coil for synchronizing the electron beams with an image signal, a focus electrode having first and second sub-electrodes disposed with a gap throug... | 10/04/2005 |
| 6946781 | Cathode with optimized thermal efficiency A cathode structure for an electron gun of a cathode-ray tube having a reduced size and providing a fast cathode start-up time and excellent thermal efficiency. The cathode comprises a closed chamber consisting of a cap supporting an emitting part of the cathode and... | 09/20/2005 |
| 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 |
| 6911770 | Apparatus with a cap and cover assembly, an electron gun with a cap assembly, and a method of using a tube A cap can comprise an aperture, and an attenuator may block the aperture during at least one point in time. In one embodiment, the attenuator can include a cover that may be displaced by a spring. In another embodiment, such as an electron gun, may comprise a suppor... | 06/28/2005 |
| 6841924 | Low-voltage high-resolution einzel gun A low voltage Einzel gun design maximizes the size of the second main lens to reduce spherical aberrations thereby reducing spot-size and improving focus quality. The gun's final accelerator electrode is formed as an internal conductive coating on the neck, which is... | 01/11/2005 |
| 6809467 | Method of assembling electron gun electrodes for a cathode-ray tube The method of assembling an electron gun for a cathode-ray tube comprises the steps loading of at least two electrodes (20, 70) one above the other, adjusting the distance between the electrodes along the longitudinal axis of the gun, and loading the electrod... | 10/26/2004 |
| 6771015 | Electron gun for cathode ray tube Disclosed is an electron gun for a cathode ray tube capable of improving substantial resolution by improving the alignment of a triode portion. The electron gun includes a triode portion composed of at least one cathode for emitting electron beams, and a first elect... | 08/03/2004 |
| 6768251 | Deflection yoke The present invention relates to a deflection yoke. According to the invention, in particular, anti-release means is provided in upper hook pieces formed in sides of a rear cover thereby preventing a printed circuit board from easy separation from the rear cover in ... | 07/27/2004 |
| 6614158 | Electron gun arrangements having closely spaced cathode and electrode and a vacuum seal An electron gun arrangement includes a cathode having a front surface and control grid located in front of it. The control grid is mounted via a cylindrical support on a Kovar mount. The cathode is supported by a cylindrical support mounted on a Kovar sup... | 09/02/2003 |
| 6580210 | Method of manufacturing an electron gun, electron gun, display device with such an electron gun, and sub-assembly for use in such an electron gun A method of manufacturing an electron gun having a sub-assembly to interconnect the beaded unit and the base of the electron gun. This sub-assembly is manufactured by making a pattern of apertures in a planar element, thereby forming a number of securing ... | 06/17/2003 |
| 6548953 | Electron gun for a cathode ray tube with electrical conductors welded to bracket base, and cathode ray tube provided with such a gun An electron gun (1) for use in a cathode ray tube has brackets (20) connecting grids (2, 3, 4, 5, 6) to insulator rods (10). Electric conductors (11) extending to contact pins (12) embedded in a glass flange (13) are welded to a base (21) of the brackets ... | 04/15/2003 |
| 6515424 | Color cathode ray tube having an internal voltage-dividing resistor A color cathode ray tube has an electron gun in its neck portion. The electron gun includes plural focus electrodes and an anode fixed in axially spaced relationship by two support rods. The electron gun also includes a voltage-dividing resistor for produ... | 02/04/2003 |
| 6509682 | Cathode ray tube having an improved electron gun A cathode ray tube has an electron gun supported on a stem of a vacuum envelope having stem pins. The electron gun includes electrodes fixed on two bead glasses, and mount supports are embedded in end portions of the bead glasses for supporting the electr... | 01/21/2003 |
| 6380682 | Voltage divider, electron gun provided with the voltage divider, and cathode ray tube provided with the electron gun The voltage-dividing resistor (1) for an electron gun (20) for use in a cathode ray tube (30) has a carrier (2) having contact elements (7) secured in bores (3) in the carrier, in contact with a resistance layer (6) on a surface (5) of the carrier (2). Th... | 04/30/2002 |
| 6344709 | Microwave electron gun An electron gun with a simple structure, wherein electrodes are extracted along the axis of the gun. The electron gun comprises first stepped metal cylinder 201 which is joined with cathode 200, second metal cylinder 202 which is joined with first stepped... | 02/05/2002 |
| 6285121 | Flat image display A plurality of fixing stands (32) are attached to the inner face of a rear case (10), and a back electrode substrate (33) that functions as a back electrode and an electrode unit (11) formed by superposing a plurality of electrode plates via insulators ar... | 09/04/2001 |
| 6259195 | Cathode ray tube provided with an electron gun, and electrostatic lens system A cathode ray tube includes an electron gun having a beam-shaping portion (20) for generating electron beams (7-9), a prefocusing system (30) of electrodes (31, 32) across which a prefocusing voltage is supplied during operation so as to form an electron-... | 07/10/2001 |
| 6239546 | Color cathode ray-tube with electron gun having a reinforcing electrode A reinforcing electrode plate having at least one electron-beam through-hole that passes an electron beam is connected to at least one of a focusing electrode and a final accelerating electrode at its opening portion. Supporting portions of the reinforcin... | 05/29/2001 |
| 6211611 | Color cathode-ray tube with resistive spring contact A cathode-ray tube comprises a bulb formed by connecting a panel having a phosphor provided on the inner surface and a funnel having a conductive coating film provided on the inner wall, an electron gun housed in the neck portion of the funnel, and spring... | 04/03/2001 |
| 6194822 | Alignment of asymmetric apertured grids for electron gun assembly To prevent rotation of a generally flat, or planar, grid having three inline beam passing apertures, where the two outer apertures are asymmetric in shape, during assembly of a multi-beam electron gun for use in a color cathode ray tube (CRT), an electron... | 02/27/2001 |
| 6166485 | Electron gun with heat dissipation elements Picture display device comprising an electron gun with cathodes having an enhanced dissipation of heat by virtue of an enlarged surface or an increase of the emissivity of the surface.... | 12/26/2000 |
| 6133685 | Cathode-ray tube In a cathode-ray tube, a nonmetallic material such as ceramic or the like is used for an electrode 1a part of an electron gun. Consequently, the deterioration of the efficiency of modulation of electron beam trajectories by an eddy current generated at th... | 10/17/2000 |
| 6013977 | Glass supporting member for an electron gun and method for its production A supporting member for an electron gun, which is molded and processed from a composition comprising a glass component and an additive, wherein the additive is a material which does not decompose in a temperature range for the molding and processing and w... | 01/11/2000 |
| 5942847 | Cathode ray tube A grid arrangement with a plurality of control grids with a layered design with ceramic spacers for a cathode ray tube. The grid arrangement can be manufactured in a simple manner and reliably with high precision even in the case of very small dimensions.... | 08/24/1999 |
| 5903102 | Electro-optical display device and flexible support for such devices used for the supply of such devices The electro-optical display device includes at least one electro-optical assembly, in particular an electro-optical cell (4), electrically connected to a supply unit (12) by means of elongated flexible supports (6, 8). Metallized tracks are arranged on th... | 05/11/1999 |
| 5894190 | Color cathode ray tube having a large-diameter lens A cathode ray tube is provided with an electron gun having an electron lens including a large-diameter cylinder electrode and a small-diameter cylinder electrode composed of a large-diameter cylinder portion and a small-diameter cylinder portion, and at l... | 04/13/1999 |
| 5866976 | Electron gun with reduced capacitance between electrodes and cathode-ray tube using the gun An electron gun is provided, in which a capacitance between a cathode and other electrodes, especially a control electrode is reduced largely without substantially changing a structure for supporting the cathode with an insulator. The cathode of this elec... | 02/02/1999 |
| 5818161 | Electron gun cathode holder with manufacturing holes The present invention provides an electron gun cathode for CRTs including a sleeve, on which a cap having an electromagnetic radiation matter applied on its upper face, is fixed. A sleeve supporter that supports and is merged with this sleeve is inserted ... | 10/06/1998 |
| 5767615 | Electron gun for a cathode ray tube A deformation produced by heat when a G1 grid is welded can be suppressed. A U-shaped slit (34) is formed on an outer peripheral wall (31) of a G1 grid (12). A spot-welding portion (X) is set to an end edge of a joint portion of the U-shaped slit (34) and... | 06/16/1998 |
| 5767616 | Electron gun system for a color cathode-ray tube Disclosed is an electron gun which includes at least one pair of plate electrodes for focusing and accelerating thermal electrons, and at least one pair of cup-shaped focusing electrodes for focusing an electron beam coming out of plate electrodes, wherei... | 06/16/1998 |
