Abstract:
PROBLEM TO BE SOLVED: To facilitate assembly of a green-state discharge vessel. SOLUTION: A ceramic discharge vessel in a green state includes a first discharge vessel 40 in a green state, and a second discharge vessel 42 in a green state. The first and second discharge vessels form a discharge vessel when joined together. A first removable handle 44 is temporarily and removably attached to the first discharge vessel part 40. The removable handle is installed and matched to operate the first discharge vessel part. A second removable handle 46 is temporarily and removably attached to the second discharge vessel part 42. The removable handle is installed and matched to operate the second discharge vessel part. COPYRIGHT: (C)2007,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide an HID lamp reigniting quickly without using extremely high voltage. SOLUTION: A first starting electrode includes a thermal machine member. In case the thermal machine member is in a low-temperature state, an inner side terminal part of the first starting electrode is located at a first position, and in case it is in a high-temperature state, the inner side terminal part of the first starting electrode is located at a second position. In the low-temperature state, an impedance which goes from an outer side terminal part of the first starting electrode to an inner side terminal part of a second starting electrode through the inner side terminal part of the first starting electrode, is lower than an impedance which goes from an outer side terminal part of a first main electrode to an inner side terminal part of a second main electrode through an inner side terminal part of the first main electrode. In the high-temperature state, an impedance which goes from the outer side terminal part of the first starting electrode to the inner side terminal part of the second starting electrode through the inner side terminal part of the first starting electrode, is higher than an impedance which goes from the outer side terminal part of the first main electrode to the inner side terminal part of the second main electrode through the inner side terminal part of the first main electrode. COPYRIGHT: (C)2009,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a method for reducing the loss of magnesium during the sintering of aluminum oxide articles, such as ceramic discharge vessels for lighting applications. SOLUTION: One or more aluminum oxide articles that are enriched in magnesium oxide are added to a sintering furnace to stem the loss of magnesium oxide in the remaining article. The enriched aluminum oxide article is made by soaking a porous aluminum oxide article in an aqueous solution of magnesium nitrate and heating the porous article to convert the magnesium nitrate to magnesium oxide. The enriched articles may then be added in one or several locations to the sintering furnace, where the magnesium from the enriched articles is released to suppress the magnesium loss. COPYRIGHT: (C)2007,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a robust ceramic discharge tube for a metal halide lamp. SOLUTION: The discharge tube 10 for a lamp has: a hollow ceramic body 12; and two ceramic capillary tubes 14 extended from the same side of a body. The two capillary tubes are respectively placed and adapted so as to accept each electrodes 16 extended into the body. A web 20 is provided for connecting two capillary tubes each other along the lengthwise direction of the two capillary tubes. COPYRIGHT: (C)2007,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a ceramic discharge case for a lamp with electrodes expanded from each other. SOLUTION: The ceramic electric discharge case for a high-intensity discharge lamp is provided with a hollow body and two capillary tubes fixed on the body. The capillary tube has each electrode and electrode parts inside the body are placed separated from each other with a gap and furthermore, have a longitudinal axis line not positioned on the same plane. Namely, in contrast to a conventional arrangement where the longitudinal axis line is placed on the same plane, the capillary tube is moved (actually rotated) to a predetermined position, and at this position, a first plane specified by a longitudinal axis line of one of the capillary tubes and a first point on the body where the second capillary tube is fixed is crossed only at the first point by the longitudinal axis line of the second capillary tube. COPYRIGHT: (C)2007,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a novel method for forming one piece hollow ceramic container and to provide a casting mold core and apparatus for forming a container and a method of molding to remove the core from the container which had the core formed. SOLUTION: The method of forming the ceramic container includes a step of compressing water-soluble powder, a step of hanging the compressed powder object in the casing mold, a step of injecting a ceramic molding mixture 28 to the casting mold, and a step of dissolving the compressed powder by distributing water into the container. The core for forming an arc discharge container has an electric discharge container and two fine tubes. The core includes a casting mold core 24 of the water-soluble powder having the shape of an electrical discharge chamber, and two fine tube formation pins 30 advantageously elongated from this casting mold core. The device for removing the casting core contains a water tank, advantageously circulates the water into the container and dissolves the casting mold core. COPYRIGHT: (C)2007,JPO&INPIT
Abstract:
Ein Verfahren zum Herstellen einer frittefreien Abdichtung in einem keramischen Bogenröhren-Körper weist auf die Schritte des: (a) Einfügens einer Durchführung in eine Öffnung in einem keramischen Bogenröhren-Körper, die Durchführung aufweisend Niob oder eine Niob-Legierung; (b) Erwärmens des Bogenröhren-Körpers auf eine erste Temperatur in einem Edelgas zum mindestens teilweise Sintern des Bogenröhren-Körpers, wobei das Edelgas ausgewählt ist aus der Gruppe aus Argon, Neon, Krypton, Xenon und Mischungen davon; und (c) weiter Sinterns des Bogenröhren-Körpers durch Erwärmen auf eine zweite Temperatur in einer Wasserstoff-Atmosphäre zum Bilden einer hermetischen Abdichtung zwischen der Durchführung und dem keramischen Bogenröhren-Körper, wobei die zweite Temperatur höher ist als die erste Temperatur.
Abstract:
A method of molding a ceramic vessel includes compressing a water-soluble powder, suspending the compressed powder shape in a mold, injecting a ceramic molding mixture into the mold, and dissolving the compressed powder by flushing the vessel with water. A core for making an arc discharge vessel that has a discharge chamber and two capillaries includes a molded core of the water-soluble powder having a shape of the discharge chamber, and preferably two capillary-forming pins extending from the molded core. An apparatus for removing the molded core that includes a water reservoir that preferably flushes water through the vessel and dissolves molded core.
Abstract:
The restrike time for re-light up of an arc discharge lamp may be decreased by including at least one refractory bimetallic start up electrode that provides a shorter arc path intermediate the main arc path in a cool state, but when heated withdraws to have a relatively longer arc path. The longer arc path in the hot state results in a relatively higher path impedance that can be used by itself or in combination with a supplemental impedance device to extinguish the starting arc in favor of the main arc. The withdrawn bimetallic starting electrode then does not interfere with the main arc function.
Abstract:
A ceramic discharge vessel for a lamp includes a hollow body, two capillarie s that extend from a same side of the body, and a strengthening web between and joining th e two capillaries to each other.