baber/WOPTO huggingface dataset:
Patent KR-20010102190-A (KR)
Title: 멀티비트 확산 스펙트럼 신호 처리
IPC: H04J99/00
Filed: 2000-12-05
Abstract: 본 발명은 확산 스펙트럼 신호를 송신 및 수신하는 방법에 관한 것으로서, 여기서, 저 비트 레이트 신호와 제 2 PN-코드의 곱은 고 비트 레이트 신호의 비트 레이트와 같고, 제 1 PN-코드 시퀀스는 상기 곱이나 고 비트 레이트 신호를 송신되어진 사전 결정된 출력 칩 레이트 신호까지 확산하는데 사용된다. 수신기에서, 확산 스펙트럼 신호는 수신되어 복조되고, 제 1 동작에서는, 상기 복조된 신호가 제 1 PN-코드 시퀀스와 상관되며, 제 2 동작에서는 언급된 제 1 상관 단계로부터의 출력이 제 2 PN-코드 시퀀스와 상관된다. 만약 강한 상관 피크가 제 1 동작의 출력에서 검출되고, 제 2 동작의 출력에서 어떠한 상관 피크도 검출되지 않는다면, 그것은 고 비트 레이트 신호로서 처리되지만, 만약 적어도 약한 상관 피크가 제 1 동작의 출력에서 검출되고 제 2 동작의 출력에서 강한 상관 피크가 검출된다면, 그것은 저 비트 레이트 신호로서 처리된다.
Patent KR-20010102565-A (KR)
IPC: H03K17/00
Filed: 2000-12-18
Abstract: 본 발명은 바이폴라 트랜지스터(1)에 의해서 유도성 부하(an inductive load)(10)를 스위칭하는 전자 회로에 관한 것인데, 여기서 스위칭 신호가 LRC 회로(6,7,9)를 통하여 스위칭 트랜지스터(1)의 베이스(5)에 공급된다.  스위칭 오프동안 LRC 회로(6,7,9)는 스위칭 트랜지스터(1)의 베이스에서 피크 전압(a peak voltage)을 야기한다.  피크 전압의 값은 스위칭 트랜지스터의 전력 소실(the power dissipation)이 최소인 때에 최대이다.  조정기 회로(a regulator circuit)(12-17)는 스위칭된 변압기(22)의 1차 권선 내의 전류원(18)을 피크 전압(Vp)이 최대가 되는 방식으로 조정한다.
Patent KR-20020008141-A (KR)
IPC: A61B5/00
Filed: 2000-03-29
Abstract: A guidewire comprising a distal end (2), a shaft portion (4) and a proximal end (3), wherein the shaft portion comprises a single helical wound, ribon-shaped wire (7) having a pitch angle ( alpha ) in the range of 35 DEG -76 DEG , and said helical wound wire preferably has a smaller total outer diameter at said distal end than at its proximal end. <IMAGE>
Patent KR-20010109340-A (KR)
Title: 조정장치
IPC: F16D41/10
Filed: 2000-04-03
Abstract: 본 발명은 샤프트에 배치되는 조정요소를 위한 조정장치에 관한 것이고, 상기 조정요소는 드라이브에 의하여 두 회전방향으로 바라는 대로 조정되며 어떤 정해진 위치에서 제동된다. 상기 장치는 드라이브에 의하여 하우징에서 함께 이동되는 두개의 조를 구비하고, 두개의 조는 적어도 하나의 단부에서 각각 가위형 배치의 암과 제로-플레이 접촉되며, 가위형 배치의 반대측 암은 회전가능하게 지지되고 조정요소에 연결되는 출력 드라이브 요소와 제로-플레이 접촉된다.
Patent KR-20020005758-A (KR)
IPC: A61P25/20
Filed: 2000-05-24
Abstract: 본 발명은 1-(R 2 )-2-(R 3 )-3(Y-X-NH-A 또는 Z-A-)-4,5,6,7-(R 0-4 )-인돌[여기서, A는 C 1-4 알킬렌이고, X는 >CH 2 , >C=O 또는 >C=S이며 다른 부호는 정의된 각종 값이다] 및 상기 화합물이 염기성인 경우에, 이의 산부가염; 및 이들을 포함하는 약제학적 조성물, 및 피부  보호용 및 화장용 조성물에 관한 것이다.
Patent KR-20020025061-A (KR)
Title: 로터
IPC: H02K1/27
Filed: 2001-03-30
Abstract: 본 발명은 상부 부품과 하부 부품을 갖는 새로운 로터에 관한 것으로서, 상기 하부 부품에는 상부 부품과 기계적으로 연결된 웨브가 제공된다.  그렇지만, 이와 같은 형태의 연결은 허용 오차가 매우 작을 뿐만 아니라 매우 안정적이지 못하다는 단점을 갖는다.  본 발명에서는 웨브(45)를 압착함으로써 하부 부품에 배치된 관형 부품(38)에 대하여 자석(40)을 형상 및 강제 끼워 맞춤 형태로 결합하는 링(42)을 구비한 로터(1)를 제공한다.  상기 하부 부품(4)은 로터축(7) 및 상부 부품(64)과 함께 로터(1)를 형성한다.
Patent KR-20020021794-A (KR)
IPC: A61M1/00
Filed: 2001-04-03
Abstract: 본 발명은 비교적 고유체 저항을 가지고 있는 세척관(28)에 관한 것이다.  고저항은 비교적 긴 관을 제공함으로써 발생될 수 있다.  흡인관(34) 및 세척관(28)은 수정체 수술 도중에 각막(16)의 전방에 연결될 수 있다.  관의 고저항은 폐색이 흡인관(34)으로부터 제거되는 경우 각막(16)으로부터의 유속의 즉각적인 변화를 최소화할 것이다.  유속의 변화를 최소화하는 것은 세척라인으로부터의 보다 큰 유속 및 각막(16) 내에서의 정압을 보장하는 데 기여할 것이다.  흡인관(34)은 관의 유효길이를 최소화하기 위해 복수의 미리 형성된 코일(42)을 가지고 있을 수 있다.
Patent KR-20020047045-A (KR)
Title: 수직연결형 스트립라인을 이용한 다층 마이크로웨이브커플러
IPC: H01P11/00
Filed: 2000-06-08
Abstract: 마이크로웨이브 집적회로 형태로 제공되는 다층 수직연결형 스트립라인 구조에서 마이크로웨이브 커플러(200)가 균질의 다층구조물을 갖는다. 이러한 커플러는 다수 셋트의 스트립라인 구조물이 간극형 기저면(232, 262, 282)에 의하여 분리되고 한 셋트 이상의 층이 결합형 스트립라인의 세그먼트를 갖는다. 전형적인 구조는 약 0.5~6.0 GHz의 주파수에서 작동하나 다른 주파수에서 작동할 수도 있다.
Patent KR-20020025090-A (KR)
IPC: B63B27/12
Filed: 2001-04-26
Abstract: 본 발명은 선체(hull)와, 추진 수단과, 적재 및 적하 수단을 구비한 종류의 독립형 컨테이너 선박에 관한 것으로, 저화 수단과 흘수를 변화시키지 않은 채로 선박 최상단으로부터 흘수선까지의 거리를 변경시키기 위한 수단(11, 12, 5)을 구비하는 것을 특징으로 한다.
Patent KR-20020060077-A (KR)
Title: A floating constellation communication system
IPC: H04W84/06
Filed: 2000-06-07
Abstract: An airborne constellation (10) is disclosed with a plurality of individual lighter-than-air platforms (12) spaced apart above a contiguous geographic area within a predetermined altitude range so that ubiquitous line of sight coverage of the geographic area is provided. Each of the plurality of platforms (12) includes an enclosure holding a regulated volume of low density gas for buoyancy of the platforms. Each of the plurality of platforms further includes a signal transmitting device attached to the enclosure by which signals from the platform may be transmitted to the contiguous geographic area.
Patent KR-20030059980-A (KR)
Title: Sputtering target
Inventor: HAN SEON YEONG
IPC: C23C14/34
Filed: 2002-01-05
Abstract: PURPOSE: A sputtering target is provided which is capable of forming a homogeneous coating film on substrate by preventing particle from sticking to target material. CONSTITUTION: The sputtering target comprises a target material(14-a) equipped with particle accumulation means; and a backing plate as a support on which the target material is rested, wherein the particle accumulation means is formed by blast treating the central part of the target material surrounded by erosion region (E), wherein the particle accumulation means is formed by blast treating the bottom surface of the groove having large width after forming a groove having large width on the central part of the target material surrounded by erosion region (E), wherein the particle accumulation means is formed by coating a metallic material solder on the bottom surface of the groove having large width after forming a groove having large width on the central part of the target material surrounded by erosion region (E), and wherein the particle accumulation means is formed by spray coating the bottom surface of the groove having large width after forming a groove having large width on the central part of the target material surrounded by erosion region (E).
Patent KR-20030062809-A (KR)
Title: A manufacturing process of a marking material for recording a cloth
Inventor: YANG SI YOUNG
IPC: C09D11/16
Filed: 2002-01-19
Abstract: PURPOSE: A method for preparing a marking material for recording on fabrics is provided, wherein the marking material is recorded on fabrics more clearly and can be easily removed from the fabrics without residual color. CONSTITUTION: The method comprises the steps of mixing 3-10 wt% of a leuco dye with 5-10 wt% of acetone and 3-10 wt% of diisopropyl naphthalene and dissolving the dye at a temperature of 50-70 deg.C to prepare a color former solution; dissolving 5-20 wt% of gallic acid and 2-5 wt% of sulfonic acid to 30-40 wt% of isopropyl alcohol to prepare a developer; mixing the color former solution and the developer to prepare an ink material; and adding 2-5 wt% of a surfactant to the ink material and mixing them. Preferably the marking material comprises further 25-30 wt% of n-methylpyrrolidone.
Patent KR-20030062826-A (KR)
Inventor: HAN YONG HUI
IPC: B21K1/00
Filed: 2002-01-21
Abstract: PURPOSE: A manufacturing method of rotor for compressor is provided which reduces production cost by manufacturing the rotor by passing general rolled steel through ordinary press for several times, and which is capable of positively coping with specification change of the rotor. CONSTITUTION: The manufacturing method of rotor for compressor comprises drawing process performed so that rolled steel blanked workpiece is easily formed; piercing process of forming hole on the center of the workpiece so that the workpiece is formed into a pipe; first and second forming processes of preforming an inner rim on the workpiece so that shaft of the compressor can be coupled to the inner rim; burring process of smoothly finishing an end part of the inner rim by removing burr produced on a part of the hole; third forming process of completely forming the inner rim; fourth forming process of preforming an outer rim by pressing the inner rim formed workpiece; fifth forming process of completely forming the outer rim by pressing the outer rim preformed workpiece; and sixth forming process of forming a stepped projection on the lower part of the inner rim and outer rim so that pulley is easily connected to shaft by the stepped projection.
Patent KR-20030067185-A (KR)
Title: Electro-magnetically actuated optical switch
Inventor: BOO JONG UK
IPC: G02B26/08
Filed: 2002-02-07
Abstract: PURPOSE: An optical switch using electromagnetic force is provided to reduce a size, a weight, and manufacturing costs of the optical switch by using a semiconductor fabrication process and a micromachining technique. CONSTITUTION: An optical switch using electromagnetic force includes a substrate(10), one or more input/output optical fibers(21-24), a micro mirror(1), and an electromagnetic driving portion. The input/output optical fibers are formed on the substrate in order to input or output optical signals. The micro mirror is used for switching the light irradiated from the input optical fibers to the output optical fibers. The electromagnetic driving portion is used for driving the micro mirror. The micro mirror is vertically adhered on the substrate.
Patent KR-20030069442-A (KR)
Title: Love value display service using the portable terminal
Inventor: YANG MI NA
IPC: H04W4/12
Filed: 2002-02-20
Abstract: PURPOSE: A method for displaying an affection state using a portable terminal is provided to display the current feeling on a terminal of the other person and display an interactive affection state and interest state on a terminal of the other person in accordance with a frequency of a telephone call and the number of short message transmission. CONSTITUTION: A user connects to a web server and executes a member registration procedure(101). If the user connects to a web server through a wireless Internet service system(102) and operates a downloaded application program, user authentication is executed(103). An interactive authentication procedure between users is executed(104). An image and a basic relation index are transmitted to a terminal of the other user(105). The first user connects to the web server on an initial screen(106) and a user authentication is executed(107,108). If the first user selects a menu and inputs specific information(109,110), the inputted information is stored in a database, the web server updates the relation index using the inputted information and stores the relation index(111). If the second use is connected to the web server(112), the web server transmits the latest information of the first user to the second user(113). If the relation index between the users is lower than a predetermined index, a relation decline alarm message is transmitted. If a connection to the web server is released(114), the initial screen is returned.
Patent KR-20030070278-A (KR)
Title: Apparatus and method of adaptive motion estimation
Inventor: YANG SEUNG JUN
IPC: H04N19/513
Filed: 2002-02-23
Abstract: PURPOSE: An adaptive motion estimating system and method are provided to adaptively select one of a full search motion estimation mode or predicted motion estimation mode to estimate a moving vector. CONSTITUTION: A motion vector estimator includes a full search motion estimation unit(104), a predicted motion estimation unit(106), and a moving vector selector(120). The full search motion estimation unit obtains moving vectors from all blocks in a predetermined search range on the basis of the current frame and/or field and reference frame and/or field. The predicted motion estimation unit estimates moving vectors in a block surrounding a block in which a candidate moving vector has been estimated. The moving vector selector receives the moving vectors from the full search motion estimation unit and the predicted motion estimation unit and selects a moving vector having a predetermined position value from the received moving vectors as a final moving vector.
Patent KR-20020071730-A (KR)
Inventor: MAKER MICHAEL
IPC: B29K9/00
Filed: 2002-02-25
Abstract: PURPOSE: A manufacturing method for a silicon rubber embossing roll is provided to simplify a production of many embossing rollers for replacing consumed embossing rollers. CONSTITUTION: An auxiliary roller is provided which is plastic, at least in the region of its circumferential surface. A laser beam is directed onto the circumferential surface and controlled for defining a real imaginary pattern in such a way that a surface structure of the pattern is created as a positive form on the surface. A layer of silicone rubber provided on the surface produces an embossing matrix which is pulled off the surface, turned inside out, and adhered to a surface of an embossing roller, with the negatively structured embossing surface facing outward. Thus, multiple embossing matrices can be created after a one-time structuring of the surface of an auxiliary roller, using a casting process.
Patent KR-20020023408-A (KR)
Inventor: KIM WI KYUN
IPC: A01K97/02
Filed: 2002-03-05
Abstract: PURPOSE: A fishing ground bait spatula is provided to prevent ground bait from being sticked to the spatula, and to freely adjust the whole length of the spatula. CONSTITUTION: The fishing ground bait spatula comprises a water storage pipe(7) within a handle portion(1) thereof, and a connecting member(2) for connecting the handle portion and a flat body portion(3) of the spatula is designed as a hollow tube form. Also, the spatula is constructed so that water is discharged from the body portion thereof, thus it is possible to moisten the spatula with the water before a user scoops ground bait so as to prevent the ground bait from being sticked to the spatula. Also, the connecting member is constructed to be inserted or extracted to and from the water storage pipe in a slidable way so as to freely adjust the whole length of the spatula.
Patent KR-20030072718-A (KR)
Title: Multipurpose Flexible Bag
Inventor: HWANG HYE SUNG
IPC: A61F7/00
Filed: 2002-03-06
Abstract: PURPOSE: A utility bag is provided to be used as hot or wet pack, pillow, pad or cushion as the bag has an inner space with the gel of high absorptive polymer to give hot or wet pack effect, and an air-charging space to maintain flexibility. CONSTITUTION: The utility bag includes plural sheets of resin(1) whose peripheral circumference is coupled to more than two spaces(2) in the inner side to be overlapped together; an internal space(20) in one side of the more than two spaces(2) where ground germanium, loess and jade including high absorptive polymer or other kinds of small ball-shaped materials are selectively put; and a charging space(22) in the other side of the more than two spaces(2) where air is charged; plural coupling part(26) in the upper and lower sides of the spaces(2).
Patent KR-20020041355-A (KR)
Inventor: JUNG JAE HYUNG
IPC: G06F17/00
Filed: 2002-03-14
Abstract: PURPOSE: A method and apparatus for integrating and managing a plurality of IDs is provided to extract IDs and passwords previously stored in a user device for web sites selected by the user, transmit the IDs and the passwords to the web sites, thereby processing the user's log-in. CONSTITUTION: An ID integration management server(101) is equipped with an ID integration management module(103). In addition, the server(101) includes a web document to be transmitted to a web browser of a user device(115). A database server(107) combined with the server(101) includes an integrated member information database(109). An affiliated company server includes a member information database(113). In addition, the server is connected to the server(101) through a network(110). The user device(115) is equipped with an ID integration management client module(117) downloaded from the server(101). A user(119) can become a member of an affiliated site corresponded to the server through a screen provided from the server(101).
Patent KR-20030075261-A (KR)
Inventor: PARK YOUNG JEN
IPC: F16F15/00
Filed: 2002-03-18
Abstract: PURPOSE: A vibroisolating level foot is provided to prevent breakage of a fixing bolt by supporting vertical load against the inclined surface with rotating the body to the fixing bolt, and to replace the broken vibroisolating rubber only by fitting the vibroisolating rubber to the frame. CONSTITUTION: A ball(5) is integrally formed in the lower part of a fixing bolt(3), and arranged in a ball socket(23) formed in the center of a body frame(21). A clamping bolt is combined with a tap hole formed in the center of the ball through the ball socket. The clamping bolt is elastically supported by compressing a spring around the clamping bolt in assembling the clamping bolt with the tap hole of the ball. Vibroisolating rubbers(41) are fitted to installation holes(25) around the ball socket of the body frame.
Patent KR-20030075678-A (KR)
Title: Marking method of a resin vessel
Inventor: NAM SEUNG WAN
IPC: B29C45/16
Filed: 2002-03-20
Abstract: PURPOSE: A pattern insertion method of an injection resin vessel is provided to always indicate regular patterns regardless of the use and washing of the resin vessel by inserting patterns in the resin vessel. CONSTITUTION: A pattern insertion method of an injection resin vessel includes steps of heating an upper mold and a lower mold of a molding machine(S10); putting injection powder in the lower mold(S20); moving the upper mold near the lower mold, and fusing the injection powder to the surface of the heated lower mold and the surface of the heated upper mold(S30); spacing the upper mold from the lower mold at predetermined intervals and inserting transfer paper between the upper mold and the lower mold(S40); and contacting the upper mold with the lower mold and then pressing the upper and lower molds and injecting the injection powder(S50).
Patent KR-20030076759-A (KR)
Title: Novel cephalosporin compounds and process for preparing same
Inventor: CHO YANG RAE
IPC: A61P31/04
Filed: 2002-03-21
Abstract: PURPOSE: Cephalosporin compounds and a preparation method thereof are provided, which compound has antimicrobial activity to the wide range of gram positive bacteria. CONSTITUTION: Cephalosporin compounds represented by formula (1), pharmaceutically acceptable nontoxic salts thereof, physiologically hydrolyzable esters, hydrides, solvates and isomers thereof are provided, wherein A is hydrogen or amino protecting group; R1 is hydrogen, C1-6 alkoxy, cyano, halogen, C3-6 cycloalkyl or C1-6 alkyl substituted by one to three of one or two nitrogen or oxygen containing C5-6 heteroaryl, C3-4 alkenyl, amino substituted or unsubstituted C3-4 alkynyl, or C3-6 cycloalkyl; R2 is hydrogen or carboxyl protecting group; V is N or C; W is C, N or N+-U, in which W is C when V is N, and W is N or N+-U when V is C; U is C1-5 alkyl; Y is hydrogen, hydroxyl, C1-6 alkyl, C1-6 alkyl substituted or unsubstituted amino, C1-6 hydroxyalkyl or C1-6 alkylthio; Z is a compound of I and J; I is S, SO or SO2; n is 1,2,3 or 4; J is C1-6 alkyl substituted or unsubstituted amino, hydroxy or substituted C1-6 alkoxy; Q is CH, CX' or N; and X' is halogen.
Patent KR-20030076782-A (KR)
Title: Method for transmitting a encryption data
Inventor: KIM JUN HO
IPC: H04L9/30
Filed: 2002-03-21
Abstract: PURPOSE: A method for enciphering and transmitting data is provided to prevent the drain and eavesdropping of data by regularly updating an encryption key used in the encipherment of data. CONSTITUTION: An internal encryption key and a public key used for enciphering the internal encryption key are created(110). The internal encryption key is enciphered by using the public key(120). A call request message containing the enciphered internal encryption key and the public key is enciphered by using a default key(140). The enciphered call request message is transmitted to the opposite terminal(150). An acknowledge message according to an encryption call request from the opposite terminal is received(160,170). According to the acknowledge message, communication data is enciphered by using the internal encryption key to be transmitted(180). The transmitted communication data is deciphered by using the internal encryption key used to encipher the communication data(190,200).
Patent KR-20030078219-A (KR)
Title: Method and system of sending photo-image using cellular phone
Inventor: SON SANG MOK
IPC: H04W8/24
Filed: 2002-03-28
Abstract: PURPOSE: A method for transmitting a photo image using a mobile phone terminal is provided to interwork an MMS(Multimedia Messaging Service) server with a PPG(Push Proxy Gateway) server, and to call a photo image transmitting terminal in a standby state, thereby receiving the photo image. CONSTITUTION: A mobile phone terminal of a user inputs the identification number of a photo image transmitting terminal after connecting to an MMS server(200). The MMS server transmits the inputted number to a PPG server(202). The PPG server transmits a photo image transmission request to the photo image transmitting terminal corresponding to the number(204). The photo image transmitting terminal directly transmits taken photo image data to the MMS server without passing through the PPG server(206). The MMS server transmits the data to the mobile phone terminal of the user(208).
Patent KR-20030079135-A (KR)
Inventor: JUNG SUN HO
IPC: G08B5/36
Filed: 2002-04-02
Abstract: PURPOSE: A method for supporting a meeting service using a GPS(Global Positioning System) is provided to enable a user to meet a desired meeting partner by tracing the location of the desired partner using a GPS and by informing the user of it. CONSTITUTION: A server catches the location of a user(410), searches for a desired partner according to preset information(420), and grasps the location of the desired partner(430). Then the server confirms whether the desired partner approaches a position previously set by the user(440). In case that the desired partner approaches the preset position, the server provides the desired partner's information to the user's mobile terminal(450). However, if the desired partner does not approach the preset position, the server catches the location of the user again(410).
Patent KR-20030079259-A (KR)
Title: An alkaline bactericidal washing composition
Inventor: KIM MYEONG WON
IPC: C11D3/48
Filed: 2002-04-03
Abstract: PURPOSE: Provided is an alkaline sterilizing and washing agent composition, which has long-term sterilizing effect, deodorizing effect and excellent washing capability, and is not harmful to human and environment. CONSTITUTION: The alkaline sterilizing and washing agent composition comprises an alkaline ionized water having pH 11 or more mixed with a buffering solution component selected from sodium phosphate, sodium silicate and a mixture thereof in the amount of 0.1 wt% to 1.0 wt% based on the total weight of the composition. The alkaline ionized water is obtained by the electro-decomposition of water containing an electrolyte. The composition may further comprise 0.2-0.8 wt% of xylitol based on the total weight of the composition.
Patent KR-20030080275-A (KR)
Title: Fan in refrigerator
Inventor: JANG DA UN
IPC: F04D29/38
Filed: 2002-04-04
Abstract: PURPOSE: An axial-flow fan of a refrigerator is provided to allow the axial-flow fan to be easily coupled to a rotating shaft of a driving motor even if the coupling work is carried out in a narrow space. CONSTITUTION: A rotating shaft(160) of a driving motor(16) is forcibly inserted into an insertion hole(81) of a hub(80). In order to easily insert the rotating shaft(160) of the driving motor(16) into the insertion hole(81) of the hub(80), a rotating shaft guiding section(82) is formed at an inlet part of the insertion hole(81) of the hub(80). An axial-flow fan is installed in a narrow space formed between a wall of a refrigerator chamber and a shroud. The rotating shaft guiding section(82) is formed by chamfering the inlet part of the insertion hole(81) of the hub(80) in such a manner that the rotating shaft(160) is easily coupled to the axial-flow fan.
Patent KR-20020038639-A (KR)
Inventor: KWON DAE WOONG
IPC: F16B35/06
Filed: 2002-04-11
Abstract: PURPOSE: A triangle mechanism using triangle screw and triangle driver for special purpose such as security system is provided to prevent tightening and releasing screws used for a special equipment with usual tools. CONSTITUTION: A triangle screw(54) has a regular triangle internal structure formed on an insertion concave groove thereof. A triangle driver has a regular triangle external structure as a tip(50) of a pole thereof to tighten or release the triangle screw. The triangle screw is not tightened or released by usual tools such as a flat-tip screwdriver or a Phillips screwdriver so that a usual person is not capable of disassembly and assembly of an equipment using the triangle mechanism.