Patent application number | Description | Published |
20090260582 | Boiler Furnace To Avoid Thermal NOx - A boiler furnace avoids NOx and increases thermal efficiency with a small boiler. The boiler furnace has an outer water wall and an inner water wall with flared top and bottom portions. | 10-22-2009 |
20100071634 | FURNACE OF BOILER FOR POWER STATION - A furnace of a boiler for a power plant includes an outer water tube section adapted to receive water from the outside and heat the water into hot water (including steam); and an inner water tube section adapted to receive water from the outside and heat the water into hot water (including steam) while allowing the water to be moved upwardly. The outer water tube section is formed in a shape gradually increasing or substantially uniform in diameter from the bottom toward the middle portion M, and gradually decreasing, increasing and decreasing again in diameter from the middle portion M toward the top, and the inner water tube section is formed in a shape gradually decreasing and increasing in diameter from the bottom toward the middle portion M, and gradually decreasing, increasing and decreasing again in diameter from the middle portion M toward the top. | 03-25-2010 |
20100200177 | MODEL CURTAIN DRIVING APPARATUS - Provided is a contour curtain driving apparatus which independently ascends and descends a contour curtain which is divided into a number of sub-curtains using a motor, respectively. The contour curtain driving apparatus includes a selector having a selection switch for selecting a driving mode of the contour curtain, an automatic controller controlling the location of the entire contour curtain according to the input of mode switches, a manual controller controlling the location of the contour curtain according to the input of a jog switch, and limit switches which are installed to mechanically change the position set by the automatic controller. Accordingly, the contour curtain is set up in various shapes. The contour curtain driving apparatus can be run immediately after recovery of the circuit out of order due to a momentary power failure or an overload trip. Maintenance and repair can be economically performed since the manipulation limit switches stand close together. | 08-12-2010 |
20120037728 | DUAL NOZZLE CAP FOR THERMAL SPRAY COATING - Disclosed is a dual nozzle cap for thermal spray coating to which both a thermal spray coating method and a kinetic spray coating method are applied. The dual nozzle cap includes a nozzle unit including inner and outer nozzles, a gun insertion hole, into which the front end of a spray gun is inserted, and a gas connection hole, into which a gas connector to supply the gas is inserted, formed through one surface of the nozzle unit. In a space between the inner and outer nozzles, a gas collection part to uniformly distribute the high-pressure subsidiary gas injected through the connection hole, a neck part to apply pressure to the high-pressure subsidiary gas to accelerate the subsidiary gas, and a gas spray hole to spray the subsidiary gas supplied from the neck part together with a material sprayed from the spray gun are sequentially formed. | 02-16-2012 |
Patent application number | Description | Published |
20100039929 | INDOOR WIRELESS POSITIONING SYSTEM AND METHOD - Provided is an indoor wireless positioning system and method including: a signal receiving unit receiving first signals from wireless communication access points and measuring strengths of the received first signals and a position estimating unit estimating a current position by comparing the strengths of the first signals measured by the signal receiving unit with a table recording strengths of second signals predicted by a simulation for indoor space the system is currently positioned. Accordingly, it is possible to rapidly and accurately create a fingerprint database and calculate position information on the terminal in the terminal or the server on the basis of the database information. | 02-18-2010 |
20100040115 | APPARATUS FOR ACQUIRING REFINE CARRIER FREQUENCY BY OPTIMIZING SEARCH AREAS AND METHOD USING THE SAME - A method and apparatus for acquiring a refined carrier frequency by optimizing search areas are provided. The apparatus for acquiring a refined carrier frequency by optimizing search areas includes: a refined signal generation unit using a coarse carrier frequency and a coarse code phase extracted from a digitized signal and obtaining a refined carrier frequency approximated to the carrier frequency of an original signal from which the digitized signal is obtained by conversion; and a refined carrier frequency searching unit setting and providing a search area in which the refined signal acquisition unit can obtain the refined carrier frequency based on the coarse carrier frequency. According to the method and apparatus, as a result of the searching method reducing a search time, acquisition of a refined carrier frequency as well as fast acquisition of a signal is enabled, thereby allowing a precise initial value to be provided to a signal tracking unit. | 02-18-2010 |
20100103026 | RADAR TRACKING DEVICE AND METHOD THEREOF - A radar tracking apparatus and method are provided. The radar tracking apparatus includes an α-β tracking filter, wherein the α-β tracking filter includes: a tracking index unit calculating a tracking index for obtaining α and β filter gains of an α-β tracking filter, based on changes in the measurement error covariance of a radar-measured value that occur when the measured value of target is converted from a polar coordinate system to a rectangular coordinate system; and a filter gain update unit calculating the variations of α and β filter gains, based on the partial differential coefficient of the changing rate of the α and β filter gains with respect to the changing rate of the tracking index and the variations of the tracking index, and updating the α and β filter gains. | 04-29-2010 |