PURPOSE: A transformer lifetime evaluation method is provided to decide the replacement time by evaluating lifetime loss of an insulating paper in driving condition in which transformer is not consecutively used as the rated load. CONSTITUTION: An insulating paper lifetime loss calculation unit calculates lifetime loss of an insulating paper in driving condition in which transformer is not consecu...

PURPOSE: A pillow top attachable/detachable with 4 side zipper is provided to offer effects of being used simply and stored conveniently after use by being installed attachably/detachably to a spring mattress. CONSTITUTION: The pillow top attachable/detachable with 4 side zipper includes a double cushioning portion; a mattress; a pillow top; an extension cover and a zipper portion. The mattress of...

PURPOSE: An indication lamp for a road is provided to minimize electricity consumption by lighting multiple LEDs depending on the brightness of sunlight. CONSTITUTION: An indication lamp for a road comprises a condensing lens(19), a solar cell(17), an electricity condensing unit, a circuit board(15), optical sensors(50), LEDs, and upper and lower bodies(11,13). The solar cell collects sunlight usi...

PURPOSE: A short distance camera for iris recognition is provided to optimize a necessary visual angle. CONSTITUTION: A light source(20) is separated from a lens center line of a lens(10) as much as a constant distance. In an object plane of the lens, iris is placed. An image plane of the lens is an image sensor plane. An incident plane(210) of a prism(200) is formed as an inclined plane. An oval ...

PURPOSE: A method of controlling the accelerated cooling of a thick plate is provided to perform uniform cooling regardless of the position of a thick plate since when the thick plate is cooled, a lot of cooling water is sprayed by a certain amount from when spraying is started. CONSTITUTION: A device for cooling a thick plate is prepared. A cooling-water supply valve(130) is opened. A pressure re...

PURPOSE: A roller assembly of a door for furniture is provided to reduce production costs by using the roller assembly for various types of furniture in common. CONSTITUTION: A roller assembly of a door for furniture comprises a roller assembly body(11), a hanging link(12), and an adapter(13). The roller assembly body has a roller(10). The hanging link is hung/un-hung on/from an automatic closing ...

PURPOSE: A water stop apparatus of an underground inlet is provided to prevent a safety accident by preventing rainwater from flowing into an underground inlet. CONSTITUTION: A water stop apparatus of an underground inlet comprises a storage box(104), a water stop support(105), a water stop support groove, a groove cover, a water stop holding unit(110), and a water stop plate(111). The storage box...

PURPOSE: Correcting device and method of a vehicle frame are provided to correct the size distortion by imposing reverse distortion after measuring the size distortion due to the welding of front and rear frames. CONSTITUTION: A fixing unit fixes a target. Coordinate acquiring units(120) measure the coordinate of one side of the target. Based on the signals of the coordinate acquiring units, a cal...

PURPOSE: A method and a system for monitoring intrusion by a software are provided to prevent an erroneous operation or an erroneous alarm by improving a monitoring system. CONSTITUTION: A first virtual region(330) is set at an outside of a security region(320) by using a first virtual fence(301). A second virtual region(340) is set within the first virtual region by using a second virtual fence(3...

PURPOSE: A push plate locking device of a cassette is provided to release a locking state of a push plate by pressing one end of a rotary link toward a top direction thereof. CONSTITUTION: A belt part(32) is coupled with a push plate to move vertically the push plate. A pulley drives and circulates the belt part. A saw-toothed wheel(30) is coupled with the pulley. A protrusion(22) is formed at a d...

PURPOSE: A liquid cell smearing method is provided to prevent contamination and to maintain an accurate smearing state of a test sample. CONSTITUTION: A liquid cell smearing method comprises: a step of putting a solution and cell in a container and centrifuging to collect cells inside a lower cap; a step of separating the upper container and the lower cap; a step of moving the solution containing ...

PURPOSE: An apparatus and a method for measuring a respond speed for a high capacity current sensor are provided to measure a response speed for a current sensor with respect to a high capacity current sensor. CONSTITUTION: A first resistance(105) for protecting a power source is serially connected to a power source. A first condenser(107) is connected between a high voltage side and a low voltage...

PURPOSE: A benthos farming device is provided to conveniently raise or drop heavy weight nets and to prevent benthos from emitting from nets even in case of height changes of the sea surface based on the difference between tides. CONSTITUTION: The benthos farming device includes a farming mesh; a mesh clamping unit(200); a top floater and a body. The farming mesh(100) includes a side mesh, which i...

PURPOSE: An excavation work monitoring system and a method thereof are provided to output a frequency to a gas pipe by installing a frequency generation device at a remote monitoring system. CONSTITUTION: A wireless communications unit(201) receives a remote control signal from the from outside. A signal conversion unit(202) converts the signal received from a wireless communication unit to a digi...

PURPOSE: A plastic bag fixing device is provided to enable a user to easily put matters including liquid into a plastic bag without help. CONSTITUTION: A plastic bag fixing device comprises a body frame(11) in which a plastic bag is inserted, a coupling frame(12), and a hinge(13). The body frame comprises a handle(21) and a coupling hole(25). The handle includes a string storage housing(23) with a...

PURPOSE: An oil decomposing apparatus using hydroxide radical is provided to rapidly decompose wasted animal and vegetable oil stored in an aeration tank by supplying hydroxide radical or anion-mixed hydroxide radical to the aeration tank. CONSTITUTION: An oil decomposing apparatus using hydroxide radical includes a net body(150), a hydroxide radical aerating unit, a bubble generating unit, and a ...

PURPOSE: An apparatus for manufacturing a selective of a solar cell using laser is provided to form selective emitters having various shapes by coping with changes of processing conditions via a galvanometer scanner. CONSTITUTION: A laser part(110) outputs the laser beam. A laser beam transmitting unit(120) transmits the laser beam outputted from the laser part. A collimating lens(130) collimates ...

PURPOSE: A manufacturing method of a flame resistant board and a flame resistant board manufactured thereby are provided to improve abrasion-resistance, scratch-resistance, chemical-resistance, light-resistance, and solvent-resistance. CONSTITUTION: A manufacturing method of a flame resistant board is as follows. A magnesium board or a vermiculite board is prepared(S1). Top and bottom patterned wo...

PURPOSE: An internal command generation circuit is provided to generate a mode register write command, an auto refresh command, and a read command by synchronizing a chip selection signal with an internal command. CONSTITUTION: A first synchronization signal generating unit(110) synchronizes the external command in the internal clock. A first synchronization signal generating unit outputs a synchr...

PURPOSE: A semiconductor memory device is provided to prevent data skew by allowing a first half bank and a third half bank to have same data transmission distance from an input/output pad. CONSTITUTION: A byte control signal generator(BC1~BC4) outputs first to fourth byte control signals. The byte control signal controls the number of a data input/output. A first data driving part(100) controls d...