Abstract: A magnetron includes an anode having an anode cylinder and anode vanes; a cathode having a filament; a condenser, a choke coil, and a plurality of leads for providing power to the filament; a plurality of magnets, pole pieces, and a yoke for forming a magnetic circuit; an antenna feeder and an antenna cap for transmitting a generated microwave outside of the magnetron; and a plurality of joints formed of a joining material between a metal component and a ceramic component of the magnetron. The joining material is diffused between the metal component and the ceramic component, to infiltrate into an inner part of the ceramic component directly, thereby joining the metal and ceramic components, and thereby also improving a reliability of a magnetron, facilitating a simple component assembly process and a simple magnetron fabrication process, permitting simplification of the fabrication process and reduction of a fabrication cost, and saving equipment cost as a high temperature furnace can be dispensed with.

Abstract: A magnetron includes an anode cylinder and anode vanes; a cathode having a filament; a condenser, a choke coil, and a plurality of leads for providing power to the filament; a plurality of magnets, pole pieces, and a yoke for forming a magnetic circuit; an antenna feeder and an antenna cap for transmitting a generated microwave outside of the magnetron; and a plurality of joints formed of a joining material between a metal component and a ceramic component of the magnetron. The joining material is diffused between the metal component and the ceramic component, to infiltrate into an inner part of the ceramic component directly, thereby joining the metal and ceramic components, and thereby also improving a reliability of a magnetron, facilitating a simple component assembly process and a simple magnetron fabrication process, permitting simplification of the fabrication process and reduction of a fabrication cost, and saving equipment cost as a high temperature furnace can be dispensed with.

Abstract: Magnetron including a cylindrical anode having a resonant space formed therein and a cathode fitted therein, magnets fitted to upper and lower sides of the anode, a yoke fitted on outsides of the anode and the magnets to for a closed circuit, and cooling devices including a main cooling device to form a heat discharge path from the anode, and a supplementary cooling device to form a heat discharge path from the magnet direct or indirectly, wherein the main cooling device is an anode heat conductor having one end closely fitted to an outside surface of the anode, and the other end passed to the yoke and exposed to an external air, and the supplementary cooling device includes a magnet heat conductor closely fitted to an outside surface of the magnet, the magnet heat conductor having one side in contact with the outside case of the magnetron, or a yoke heat conductor closely fitted to an outside surface of a yoke plate, the yoke heat conductor having one side in contact with the outside case of the magnetron.

Abstract: Magnetron including a plurality of anode vanes each having notches of shapes different from each other in a top and a bottom, ring formed outer straps of copper each in contact to every other one of the anode vanes in top and bottom notches thereof to connect the anode vanes for forming an electrostatic field to the anode vanes, and ring formed inner straps of a material having a heat resistance higher than the anode vanes of copper and a thermal expansion coefficient similar to the anode vanes each in contact to every other one of the anode vanes in top and bottom notches thereof other than the anode vanes the outer straps are not in contact in concentric with the outer straps on an inner side thereof, thereby preventing deformation and breakage of the straps in advance to allow application to a higher powered magnetron.

Abstract: The present invention provides a method for fabricating an optical fiber block capable of preventing degradations due to an outgassing effect provided from an epoxy material.

Abstract: An evaporator of a capillary pumped loop (CPL) cooling apparatus having a fine wick structure is provided. The evaporator having a flat board shape, of a capillary pumped loop (CPL) cooling apparatus includes a coolant storing part for storing in-flowing coolant from the condenser and collecting a uncondensed gas contained in the in-flowing coolant in an upper space, a cooling part for cooling the heating body through vaporization of the coolant, and superstructure and substructure combined with each other, for defining a channel region in which the coolant flows from the coolant storing part to the cooling part by a capillary action. In this case, the substructure includes a first substructure used as a substrate and a second substructure formed along a border of the substrate, or includes first through third segments equal to the first and second substructures.

Abstract: An ink refilling apparatus for a cartridge of an ink jet printer comprises an injector and a refill holder. The injector includes a cylinder containing ink and a piston inserted into the cylinder. An ejecting protrusion having an ejection hole is formed at the cylinder. An enclosing protrusion surrounding the ejecting protrusion is formed at the cylinder, and is formed with a female screw around the inner periphery. The refill holder includes a base onto which a cartridge is seated. First and second supporting walls are bent vertically from both ends of the base to support the cartridge. An inserting protrusion having a male screw around the outer periphery to be teeth-engaged with the female screw of the injector is bonded to the first wall of the refill holder. An ink injection passage is formed through the inserting protrusion to communicate with an injection hole of the cartridge.

Abstract: Magnetron including a cylindrical anode having a resonant space formed therein and a cathode fitted therein, magnets fitted to upper and lower sides of the anode, a yoke fitted on outsides of the anode and the magnets to form a closed circuit, and cooling devices including a main cooling device to form a heat discharge path from the anode, and a supplementary cooling device to form a heat discharge path from the magnet direct or indirectly, wherein the main cooling device is an anode heat conductor having one end closely fitted to an outside surface of the anode, and the other end passed to the yoke and exposed to an external air, and the supplementary cooling device includes a magnet heat conductor closely fitted to an outside surface of the magnet, the magnet heat conductor having one side in contact with the outside case of the magnetron, or a yoke heat conductor closely fitted to an outside surface of a yoke plate, the yoke heat conductor having one side in contact with the outside case of the magnetron.

Abstract: The invention is disclosed to variably control the amount of compressed air flowing per unit hour depending on the change in the level position of the wheel axles in a moving vehicle when the compressed air flows into air springs from the leveling valve or when the compressed air flows out of the air springs through the leveling valve, so as to make it possible to variably control the time to restore the status of the vehicle body depending on the level of rollings caused when the vehicle turns a corner, thereby achieving turning stability, higher response speed and steering.

Abstract: A roll decreasing structure of a suspension for the front and dead axles of a commercial vehicle, wherein an axle is inserted into the body of a mounting member mounted at a frame, a base arm mounted with wheels is attached to an external side of the axle via a key and the axle is mounted at the other end of the axle with a torsion bar case to which an end of a torsion bar of a straight spring steel is mounted by way of serration method.

Abstract: An ink refilling apparatus for a cartridge of an ink jet printer comprises an injector and a refill holder. The injector includes a cylinder containing ink and a piston inserted into the cylinder. An ejecting protrusion having an ejection hole is formed at the cylinder. An enclosing protrusion surrounding the ejecting protrusion is formed at the cylinder, and is formed with a female screw around the inner periphery. The refill holder includes a base onto which a cartridge is seated. First and second supporting walls are bent vertically from both ends of the base to support the cartridge. An inserting protrusion having a male screw around the outer periphery to be teeth-engaged with the female screw of the injector is bonded to the first wall of the refill holder. An ink injection passage is formed through the inserting protrusion to communicate with an injection hole of the cartridge.

Abstract: A high power magnetron is disclosed. The magnetron includes an anode. The anode has a cylinder positioned around a cathode, a plurality of vanes radially fixed to an inner wall of the cylinder, and straps mounted through the vanes. The inside diameter of the cylinder is 40-43 mm and the thickness of the cylinder is 2.8 mm or less. The magnetron is capable of not only reducing the thickness of its cylinder but also improving the thermal performance of the cylinder, thereby improving thermal stability of the cylinder, lengthening the life span of the cylinder and reducing the fabrication costs of the cylinder.

Abstract: An evaporator of a capillary pumped loop (CPL) cooling apparatus having a fine wick structure is provided. The evaporator having a flat board shape, of a capillary pumped loop (CPL) cooling apparatus includes a coolant storing part for storing in-flowing coolant from the condenser and collecting a uncondensed gas contained in the in-flowing coolant in an upper space, a cooling part for cooling the heating body through vaporization of the coolant, and superstructure and substructure combined with each other, for defining a channel region in which the coolant flows from the coolant storing part to the cooling part by a capillary action. In this case, the substructure includes a first substructure used as a substrate and a second substructure formed along a border of the substrate, or includes first through third segments equal to the first and second substructures.

Abstract: A video repeat reproduction method and apparatus for use with a video recording and reproducing apparatus such as a video tape recorder, which employs predetermined signals to repeatedly reproduce a specific interval of a video signal. The method includes the steps of recording distinctive index signals respectively at the starting point and ending point of a desired repeat reproduction interval while displaying a reproduced picture, detecting the index signals which are recorded on the recording medium, displaying the detected index signals on a screen, and repeatedly reproducing the interval of the video signal on which the index signals have been recorded by a desired number of times if a repeat reproduction command is applied.