baber/WOPTO huggingface dataset:
Patent KR-20010054680-A (KR)
Inventor: LIM SEONG MUK
IPC: B08B3/12
Filed: 1999-12-07
Abstract: PURPOSE: An attaching method for the vibrator of a ultrasonic washing machine is provided to enhance washing efficiency and to broaden the lift time of the washing machine by solidly attaching the vibrator to the supersonic washing machine. CONSTITUTION: To attach the vibrator of a supersonic washing machine(10), solder(20) mixed with lead powder and flux solvent is coated on the bottom of the metal washing machine and a vibrator(30) is put on the solder. Then, the solder is thermally bonded to the vibrator by applying heat to the vibrator and an epoxy resin adhesive(40) is coated around the vibrator. Finally, washing liquid such as saline solution and a washed material(60) such as a contact lens are input into the metal washing machine and washed by strong wavelengths from supersonic waves.
Patent KR-20010054736-A (KR)
Inventor: KIM GI SEON
IPC: H04B7/26
Filed: 1999-12-08
Abstract: PURPOSE: A method for controlling traffic in wireless mobile communication is provided to achieve the maximization of resource utilization by using a reserved access channel and a traffic channel separately and suppressing inter-user interference through the transmission control of a reserved packet based on an access channel permission probability. CONSTITUTION: Each frame has 20 slots, and a reservation access channel has 60 sub slots. Considering that voice and data terminals coexist, five sub slots, the twelfth sub slots, only are provided for voice traffic, and the other 55 sub slots are provided for data traffic. As a traffic channel used in transmitting an information packet is controlled by a base station, the collision of packets is not generated. However, the collision of reserved packets can be anticipated sufficiently because access to a reserved access channel transmitting a reserved packet complies with an ALOHA system. Accordingly the base station calculates an access channel permission function in order to minimize packet collision and transmits the calculated function to each terminal in a broadcasting method.
Patent KR-20010055544-A (KR)
Inventor: LIM GWANG U
IPC: H03L7/08
Filed: 1999-12-10
Abstract: PURPOSE: A device of lock detection of frequency lock loop for a digital demodulator is provided to stabilize the entire system and to speed up convergence by having the modes of FLL and PLL changing automatically through analysis of amplitude of remaining errors. CONSTITUTION: In the device of lock detection of frequency lock loop for a digital demodulator, an FLL loop filter(71) receives a frequency error and filters the error through FLL loop. A PLL loop filter(72) receives a phase error and filters the error through PLL loop. A lock detector(73) detects whether the FLL loop filter(71) is locked. A delaying unit(74) receives and delays the output of the FLL loop filter(71) responding to the lock detector(73). A multiplexer(75) mutiplexes the output of the PLL loop filter(72) responding to the lock detector(73). A signal coupler(76) combines the outputs of the delaying unit(74) and the multiplexer(75).
Patent KR-20000048167-A (KR)
Inventor: KONO HIROYUKI
IPC: C09K23/52
Filed: 1999-12-16
Abstract: PURPOSE: Provided is a cationic polymer-modified silica dispersion which comprises silica fine particles having an average particle diameter of less than 200 nm and a cationic polymer and which does not bring about coagulation of the silica particles. CONSTITUTION: A dispersion which is diluted to a solid concentration of 1.5 % by weight is characterized by having a light scattering index (n value) of 2.0 or more. The dispersion is produced by oppositely-colliding a mixed solution obtained by mixing silica with a cationic polymer in a polar solvent at a treating pressure of 300 kgf/cm¬2 or more or passing it through an orifice under a condition that a pressure difference between the inlet side and the outlet side of the orifice is 300 kgf/cm¬2 or more.
Patent KR-20010063111-A (KR)
Inventor: HAM HEON JU
IPC: H01L21/311
Filed: 1999-12-21
Abstract: PURPOSE: A method for manufacturing a fine circuit is provided to greatly reduce manufacturing cost, by using an inexpensive exposure apparatus and an ion beam generating unit to form the fine circuit. CONSTITUTION: A substrate(5) is prepared which has a metal layer(6), an insulating layer(8) formed on the metal layer and a photoresist layer(10) formed on the insulating layer. After an opening region(7) is formed on the photoresist layer, an ion beam is irradiated at a predetermined angle regarding a vertical direction of the substrate to etch the insulating layer. The metal layer is etched to form a circuit by using etchant.
Patent KR-20010063294-A (KR)
Inventor: AHN CHI UK
IPC: H01J1/30
Filed: 1999-12-22
Abstract: PURPOSE: A method of producing a field emission display panel is provided to increase a quantity of discharge current and to reduce power consumption. CONSTITUTION: The field emission display panel comprises an emitter tip(11a) for operating a fluorescent material by emitting an electron, the emitter tip(11a) being formed on a silicon substrate(11) and a gate electrode(15) for enclosing the emitter tip(11a). The emitter tip(11a) includes a plurality of tip main bodies which run parallel with each other and a plurality of tip branches extending from the tip main bodies at a direction perpendicular to the longitudinal direction of the tip main bodies. The tip branches are disposed at a same interval. One tip branch is positioned between the other two tip branches passing through the adjacent tip main body. The gate electrode(15) is disposed between the tip main body and the tip branch at the shape of prominence and depression.
Patent KR-20010064060-A (KR)
Inventor: LEE JEONG HO
IPC: H01L21/31
Filed: 1999-12-24
Abstract: PURPOSE: A method for manufacturing a low-k interlayer dielectric of a semiconductor device is provided to remarkably reduce permittivity of a conventional silicon oxide layer, and to guarantee thermal stability in a subsequent thermal process by using a silicon oxide layer. CONSTITUTION: The first plasma treatment using CF4 gas is performed regarding the entire structure of a substrate(10) which includes a conductive layer and has a predetermined lower layer. A silicon oxide layer-based interlayer dielectric is formed on the entire structure. The second plasma treatment using CF4 gas is performed regarding the interlayer dielectric.
Patent KR-20010060835-A (KR)
Inventor: JUNG YEON HAK
IPC: G02F1/1333
Filed: 1999-12-28
Abstract: PURPOSE: A fringe field switching liquid crystal display(LCD) is to decrease impedance and RC time delay and thus decrease a residual direct current, thereby removing a residual image. CONSTITUTION: A lower substrate(21) faces an upper substrate(35) spaced apart by a predetermined distance. A liquid crystal layer(39) is interposed between the lower substrate and the upper substrate. A counter electrode(22) made of a transparent material is formed on the lower substrate. A pixel electrode(30) is formed on the lower substrate in an interdigital structure. The pixel electrode is made of a transparent material and is overlapped with the counter electrode to form a fringe field together with the counter electrode. An insulating layer(23,25) is interposed between the counter electrode and the pixel electrode. A lower alignment film(31) is interposed between the liquid crystal layer and the resultant lower substrate on which the counter electrode and the pixel electrode are formed. An upper alignment film(37) is interposed between the upper substrate and the liquid crystal layer. The liquid crystal layer, the lower alignment film and the insulating layer have a product of dielectric constant and resistivity within the same range.
Patent KR-20010061154-A (KR)
Inventor: KANG DAE JIN
IPC: G01L23/24
Filed: 1999-12-28
Abstract: PURPOSE: An output correcting apparatus of a manifold absolute pressure sensor is provided to secure a more accurate engine control by correcting an output voltage of the sensor and sensing a manifold absolute pressure using the corrected output voltage. CONSTITUTION: An output correcting apparatus comprises a manifold absolute pressure sensor(10) and a correction unit(30). The manifold absolute pressure sensor(10) is operated by driving voltage(VCC) from an engine control unit(20) and senses a manifold pressure. The correction unit(30) corrects a manifold absolute pressure sense output signal to the engine control unit(20), which controls an engine based on an output signal from the manifold absolute pressure sensor(10).
Patent KR-20010064329-A (KR)
Inventor: KIM HYEONG NAM
IPC: G11B20/10
Filed: 1999-12-29
Abstract: PURPOSE: A digital signal regeneration apparatus and method is provided to improve data restoring performance by adjusting level of expected value to be used for branch matric calculation using maximum mean and minimum mean of regeneration signal and center value of 3T regeneration signal. CONSTITUTION: An optical pickup(12) reads information recorded at an optical disk(10). A signal processing part(14) detects high frequency regeneration signal and servo signal combining signal which is output from the optical pickup(12). An analog to digital converter(16) converts high frequency regeneration signal of the signal processing part(14) into digital signal. An equalizer(18) equalizes digital signal of A/D converter(16) to be proper to frequency characteristic of PR(partial response) target. A level measuring part(20) measures maximum mean, minimum mean, central value of 3T from the equalized digital signal. An expected value level adjustment part(22) adjusts expected value adjustment based on measuring value of the level measuring part(20). A viterbi decoder(24) restores digital signal of the equalizer(18) to original data using expected value of the expected value level adjustment part(22). A digital signal processing part(26) processes data restored from the viterbi decoder(24) to the desired purpose.
Patent KR-20000068283-A (KR)
Title: 동(銅) 추진기 상의 해양생물에 의한 부착오염 방지방법
IPC: C23F15/00
Filed: 1997-08-21
Abstract: 본 발명은 주석청동, 알루미늄청동, 실리콘-알루미늄청동, 니켈-알루미늄 청동, 망간청동 등을 모두 포함한 동(銅) 재질 추진기 상의 해양생물에 의한 부착오염 방지를 위한 방법에 관한 것이다.  본 발명에 의하여 제공되는 동(銅) 표면, 특히 추진기 상의 부착오염을 방지하기 위한 방법은, 주조 추진기를 추진기 생산 기준에 따라 연마하는 단계, 전체 연마된 추진기의 표면 상의 모든 오염과 그리스(grease)를 제거하기 위해  세척하는 단계, 세척된 추진기를 최소 0.005" 또는 0.15mm 두께로 구리 전기도금하는 단계, 전기도금된 추진기를 적당한 컨테이너에 넣어 차아염소산 나트륨 표준 용액을 분무하는 단계, 및 적어도 24시간 동안 컨테이너를 밀봉하고, 바람직하게는 출항 직전까지 밀봉상태를 유지하는 단계를 포함한다.  본 발명의 동(銅) 표면, 특히 추진기 상의 부착오염을 방지하기 위한 방법을 사용하면, 이후, 선박이 정기적으로 정박할 때 단지 최소한의 유지만이 요구되므로, 유지비용의 감소 목적으로 유용하게 이용될 수 있다.
Patent KR-20000068310-A (KR)
IPC: C03B27/012
Filed: 1998-07-01
Abstract: A roller furnace for heating windows to their softening temperature. The furnace is provided above a roller transportation track. Vanes forming blowing nozzles are arranged transversely to the direction of movement of the windows in order to blow hot gas onto the top surface of the window. A radiative heater is provided below the roller transportation track to heat the bottom of the window.
Patent KR-20000048864-A (KR)
Title: Method of manufacturing battery electrode substrate and battery electrode substrate
Inventor: SUGIKAWA HIROFUMI
IPC: H01M4/74
Filed: 1997-10-03
Abstract: PURPOSE: A method of manufacturing battery electrode substrate and battery electrode substrate is provided to have more retention power to the radiation material and to increase ointment quantity to the thickness direction. CONSTITUTION: Pressing with an embossing process to a thin metal sheet, concave portion is prepared to the entire sheet. In this concave portion process, a hole is made at each apex of a concave portion simultaneously, and generate a burr protruded from the distribution of this hole to the outside. Piling this metal sheet prepared with uneven part, integrate adjacent burr of concave apex of a lower layer with the burr of waist apex of an upper layer twisted each other, and charge radiation material through each hole of concave portion apex to the space between adjacent metal sheets.
Patent KR-20000069457-A (KR)
Title: 유기 전계 발광 장치의 제조 방법
IPC: H01L51/56
Filed: 1997-10-15
Abstract: 본 발명은 기판상에 형성된 제1 전극, 적어도 유기 화합물로 이루어지는 발광층을 포함하는 상기 제1 전극상에 형성된 박막층, 및 상기 박막층상에 형성된 복수의 제2 전극을 포함하고, 상기 기판상에 복수의 발광 영역을 갖는 유기 전계 발광 장치의 제조 방법으로서, 적어도 일부분이 상기 박막층의 두께를 상회하는 높이를 갖는 스페이서를 상기 기판상에 형성하는 공정과, 개구부를 가로지르도록 형성된 보강선을 갖는 섀도우 마스크를 상기 스페이서층에 밀착시킨 상태에서 증착물을 증착시킴으로써 패터닝하는 공정을 포함하는 것을 특징으로 하는 유기 전계 발광 장치의 제조 방법에 관한 것이다. 
     또한, 본 발명은 유기 전계 발광 소자의 특성을 열화시키지 않고 폭 넓은 증착 조건하에서 고정밀도의 미세 패터닝이 가능하며, 나아가 발광 장치의 구조를 한정하지 않고 비교적 간략한 공정으로 높은 안정성을 실현하는 것이 가능하다.
Patent KR-20000062322-A (KR)
Title: 회전 및 이동가능한 스프레이 노즐
IPC: B05B1/00
Filed: 1997-12-19
Abstract: 기판(1,12)을 처리하기 위해 노즐의 세로 길이를 따라 일련의 오리피스(40)를 갖고 회전 및 조절가능한 노즐(18)에 있어서, 본 발명의 상기 노즐 설계에 의하면, 액체는 에어로졸 스프레이의 각도와 상관없이 상기 노즐의 세로 길이를 따라 알맞게 분사된다. 이것은 스프레이 각도와 상관없는 균일 에어로졸 흐름의 생성을 허용한다. 본 발명의 상기 노즐 설계는 상기 노즐(18)내에 액체의 균일 분포를 향상시키고, 그 밖에 더 균일한 액체 웅덩이를 제공하고, 또한 상기 노즐 길이를 가로질러 일시적 불균일성을 제거한다. 더우기, 본 발명은 처리될 기판(1,12)을 향하거나 기판으로부터 떨어진 방향(B)으로 또는 기판 표면에 평행한 방향(B)으로 이동 가능한 노즐(18)에 관한 것이다. 상기 노즐(18)은 적어도 노즐의 한부분을 따라 세로 방향에 제공된 일련의 충돌 오리피스(40)를 포함하고, 여기서 상기 노즐은 세로 방향으로 제 1, 제 2 공동(104,106)으로 나뉜 내부를 가지며 상기 제 1, 제 2 공동 사이에는 다수의 개구(108)가 위치하며, 상기 제 1, 제 2 공동 사이의 개구(108)는 상기 오리피스(40)의 방사각 보다 세로축으로 다른 방사각에 설정된다. 바람직하게는, 상기 노즐(18)은 서로에 대해서 작동되게 지지되거나 연결된 내부관(100)과 외부관(90)을 포함한다. 본 발명은 또한 서로로부터 독립적으로 회전(A) 및 이동(B) 가능한 노즐(18)의 결합에 관한 것이다.
Patent KR-20000070559-A (KR)
Title: 배기 가스 재순환 장치
IPC: F02D13/04
Filed: 1998-01-09
Abstract: 본 발명은 흡기용 로커 아암(10)에 의해 배기 가스 재순환용 마스터 피스톤(12)을 작동하여, 이것에 종동하는 슬레이브 피스톤(14)에 의해 동일한 실린더(1)의 배기 밸브(4)를 흡기 행정에서 개방하여, 압력차로 인해 배기 가스를 배기 포트(5)로부터 연소실(2) 안으로 재순환하고, 다음의 폭발 행정에 있어서의 연소실(2) 내에서의 연소 온도를 낮춰서 NO X 의 감소를 꾀하도록 한 배기 가스 재순환 장치이다.
Patent KR-20000070787-A (KR)
Title: 섬유기계에서 자카드선택을 위한 방법과 장치
IPC: D04B15/82
Filed: 1998-01-30
Abstract: 본 발명은 잭이 실린더내로 캠에 의해서 안내되는 사전선택위상 다음에 스프링의 압력하에서 이동되어 경로나 기능을 변경하거나 이들을 방지하도록 전면상에 설치된 다른 부재 및/또는 셀렉터에 의해서 실린더내에 포함 및/또는 유지되어 잔류함으로써 스프링(M1)으로 형성된 선택잭(1)을 특징으로 하는 섬유기계에서 자카드선택에 대한 것이다.   경우에 따라서, 고정되어 있어도 셀렉터는 유입버트 및/또는 잭상에 측면충격없이 최소공간과 시간에 의해 수평, 수직, 방사형으로 이동할 수 있다.  결국, 액추에이터는 잭 및/또는 니들의 캠과 함께 규격지지부에 합체되어 선택의 형 및/또는 자카드형이외의 직물동작을 변경한다.
Patent KR-20000075916-A (KR)
IPC: B42D15/10
Filed: 1998-02-06
Abstract: A smart card module includes a semiconductor chip that is electrically conductively connected to a metallic lead frame in which contact areas are formed. The semiconductor chip and the contact areas are electrically conductively contacted through connection areas disposed on a surface of an electrically insulating protective layer applied to the semiconductor chip. That surface faces away from the semiconductor chip. Contact can be established between the connection areas and the contact areas through the use of soldered joints or electrically conductive adhesive bonds. A smart card including the smart card module is also provided.
Patent KR-20010005973-A (KR)
Title: 보안용지용 보안요소
IPC: D21H21/42
Filed: 1998-03-31
Abstract: 본 발명은 미관 특성 및 위조방지 특성을 모두 가지는 은행권등 보안용지에 사용하는 보안요소에 관한다.   본 발명은 가늘고 긴 투과성 중합체 기판을 포함하는, 보안용지에 전체적으로 또는 부분적으로 내장하기 위한 보안요소를 포함한다.   상기 기판의 최소한 한면에는 디자인이 된 반사 금속층이 있다.   상기 디자인은 하나 이상의 비선형 바운더리를 가지고 요소의 길이를 따라 순간 진폭 및/또는 최대 진폭이 달라지는 한번 이상 반복되는 하나 이상의 반복적인 기하학적 문양을 포함한다.
Patent KR-20010073341-A (KR)
Title: Casting panel for reinforced underwater concreate structure
Inventor: LEE SANG GEUN
IPC: E02D37/00
Filed: 2000-01-14
Abstract: PURPOSE: A repair/reinforcing method for a concrete structure in the water and a member thereof are provided to carry out the establishment of the concrete structure in a short time and conveniently by integrally curing damaged parts of the structure with the repair/reinforcing member via aquatic adhesive epoxy mortar, thereby maintaining the structure semi-permanently. CONSTITUTION: A repair/reinforcing method for a concrete structure in the water includes the steps of establishing a mortar filling space by a repair/reinforcing member formed of angle elements(100a), curved plate elements(100b) and flat plate elements forming wall elements mounted in parallel with damaged parts of the concrete structure in the water and formed of GRC(Glassfiber Reinforced Concrete) properties, filling selective stones and rubbles, and aquatic adhesive epoxy mortar(230) between the wall surfaces of the member and the damaged parts, and curing the filled mortar integrally with the wall member and the damaged parts.
Patent KR-20010073767-A (KR)
Title: Evaporator in refrigerator
Inventor: KIM SEOK RO
IPC: F25B39/00
Filed: 2000-01-20
Abstract: PURPOSE: A refrigerator evaporator is provided to achieve an improved dehumidification effect and heat exchange efficiency by allowing the air to smoothly flow through the evaporator. CONSTITUTION: A refrigerator evaporator(10) comprises a refrigerant pipe(13) which is bent forming several turns, in such a manner that a predetermined spacing is formed in a vertical direction and a predetermined pitch is formed in a horizontal direction; and heat exchange fins(17) inserted into the refrigerant pipe so as to perform heat exchange between the refrigerant flowing through the refrigerant pipe and the air flowing around the refrigerant pipe. The refrigerant pipe has the pitch formed at the air inlet side(A) relatively larger than the pitch formed at the air outlet side(B). Heat exchange fins are arranged to be closer with each other as it goes toward the upper portion of the refrigerant pipe, and the pipe having relatively larger pitch is not equipped with heat exchange fins, thus allowing for a smooth air flow at the portion having relatively larger pitch.
Patent KR-20010075910-A (KR)
Title: Anti-tumor agent containing extract of Corydalis Tuber
Inventor: HAN HUI YONG
IPC: A61K36/505
Filed: 2000-01-21
Abstract: PURPOSE: An anti-tumor agent containing a Corydalis tuber extract and pharmaceutically acceptable salts thereof as an effective ingredient is provided, which has no toxicity to a human body. CONSTITUTION: The object anti-tumor agent contains a Corydalis tuber extract and pharmaceutically acceptable salts thereof as an effective ingredient, wherein the Corydalis tuber extract is obtained by extracting Corydalis tuber with a polar solvent, reextracting the extract with a nonpolar solvent and adding n-butanol to the remaining filtrate.
Patent KR-20010076454-A (KR)
Title: Field Emission Array and method for fabricating same
Inventor: KIM TAE YEONG
IPC: H01J9/02
Filed: 2000-01-26
Abstract: PURPOSE: An emitter structure of a field emission device and a method of manufacturing the same are provided to have long lifetime and the high efficiency of electron emission property while allowing to use a low price substrate such as a glass. CONSTITUTION: In an emitter structure of a field emission device, an electrode layer is formed on a substrate(21). A metal film(23) is formed on the electrode layer(22). nanosphere(24) are formed on the peak of the metal film as to emit electrons. An insulation film is coated on the electrode layer and the whole surface of the metal film on which the nanosphere are formed. A gate electrode and an insulation layer(25) are formed on the electrode layer as to surround the metal film. The nanosphere are formed with metal substances including Mo, Cr, Ta, Cu, etc.
Patent KR-20010076568-A (KR)
Title: Safety injection system for PWR
Inventor: CHO SEONG JE
IPC: G21C15/18
Filed: 2000-01-26
Abstract: PURPOSE: A safety injection system of a reactor is provided to prevent a problem that most water is lost through a broken pipe since water is discharged to a reactor too much at an initial stage. CONSTITUTION: If a pressure of a reactor is below a predetermined pressure, a safety injection water is supplied to the reactor by an inside pressure of a safety injection tank. Water of an IRWST is supplied to the reactor by a safety injection pump. A direct injection nozzle is installed to directly inject the safety injection water to the reactor. A fluid flow limiting unit(100) is installed on an inside of the safety injection tank(10) to discharge the safety injection water at a high speed to the direct injection nozzle until a water level in the safety injection tank reaches a predetermined water level, and discharge the safety injection water to the direct injection nozzle at a low speed by limiting a fluid flow after the water level becomes lower than the predetermined level. A discharge pipe(140) is downwardly formed on a center of a bottom surface of a cylindrical body(110). A stand pipe(120) has a predetermined length upwardly from a side surface of the body(110) and opened on an upper part thereof to receive water. A control pipe(130) is connected on other side of the body(110) to receive water at the same height as the body(110).
Patent KR-20010077605-A (KR)
Title: A personal ornaments
Inventor: YOO CHUNG YOUL
IPC: A44C25/00
Filed: 2000-02-03
Abstract: PURPOSE: A decorative accessory is provided to allow a user to easily change the shape and the color of the existing accessory, and to improve the beautiful appearance and the reliability of the accessory. CONSTITUTION: The decorative accessory is adopted to various personal ornaments including a hair band, a hair pin, a necklace, a bracelet, and a brooch. The decorative accessory consists of an inner groove(11) formed with a fastening hole(12) on the both ends thereof, a decoration piece(30) to be received in the inner groove, and a transparent cover(20). The transparent cover is coupled to the inner groove by a fastener(23) so that a hole(22) of the transparent cover is in accord with the fastening hole of the inner groove. The outer peripheral portion of the transparent cover is rounded to allow the decoration piece received in the inner groove to be shown in expanded condition larger than the original scale thereof. The inner side surface of the transparent cover is recessed for receiving the decoration piece.
Patent KR-20010006622-A (KR)
Title: Starter
Inventor: KAMEI KOICHIRO
IPC: F02N11/00
Filed: 2000-02-09
Abstract: PURPOSE: To reduce abrasion of a pinion and a ring gear, smoothly mesh the pinion and the ring gear, and achieve miniaturization. CONSTITUTION: A coil spring 6 and a plate 5b to be brought into contact with the rear end 3f of a thrust spline 3A of an overrunning clutch and for transmitting resiliency of the coil spring to the thrust spline 3A are arranged between the inner periphery of a plunger 4 and an output shaft 1, and a plate 5a for meshing a pinion with a ring gear by resiliency of the coil spring is fixed on the inner periphery of the rear end side of the plunger when the tops and the bottoms of the teeth of the pinion 3P coincide with those of the ring gear 50.
Patent KR-20010080844-A (KR)
Title: Holography of using light cross-point
Inventor: LEE HYUN SANG
IPC: G03H1/04
Filed: 2000-02-10
Abstract: PURPOSE: A holography using beam intersection is provided to make a hologram at the sky by making a plurality of beam intersection out of a plurality of beam emitted to the sky. CONSTITUTION: The first process emits a plurality of laser beam which has no spread effect to make a plurality of beam intersection at the sky. The second process performs a hologram at the sky by linking the plurality of beam intersection made in the first process.
Patent KR-20010083456-A (KR)
Title: Band cap for road sign
Inventor: CHO O HYEON
IPC: E01F9/00
Filed: 2000-02-15
Abstract: PURPOSE: A band cap of a road sign plate is provided to protect the road sign plate from external impact by tightening the road sign plate into a post with a separation preventer and a tightener. CONSTITUTION: A band cap comprises: an upper cover(2) covering the upper end of a post(1) for a road sign plate; a separation preventer(3) fixing the upper cover; a binding groove(11) of a front binding unit(10) for fixing the separation preventer; and fixing and combining grooves(4,12) formed on the separation preventer to prevent the binding units from sliding on the separation preventer. Then, the binding units are combined each other through screw holes(13) with bolts(16) and nuts(17).