baber/WOPTO huggingface dataset:
Patent KR-20010029008-A (KR)
Inventor: HYUN CHANG SUN
IPC: D06N3/14
Filed: 1999-09-28
Abstract: PURPOSE: A process for preparing artificial leather by improving peeling property of release paper and urethane resin and processability of resin is provided, which produces abrasion resistant artificial leather capable of optionally forming a pattern without limitation and relation with a release paper pattern. CONSTITUTION: This process comprises the steps of: preparing a polyurethane sol by adding a pigment and a solvent to polyurethane; preparing a PVC sol by mixing a plasticizer, a stabilizer, a filler, ceramic powder, a foaming agent and a pigment to PVC resin; preparing an intermediate product by coating the polyurethane sol on release paper, gelling, coating the PVC sol on the polyurethane resin, foaming in an oven, coating a two-component adhesive on the obtained foaming layer, removing the solvent and adhering to fabrics; and forming a pattern by pressing at 170 to 180deg.C with an embossing machine and gravure printing or surface treating.
Patent KR-20010035711-A (KR)
Inventor: JU JAE HYEON
IPC: H01L21/314
Filed: 1999-10-01
Abstract: PURPOSE: A method for manufacturing a capacitor of a semiconductor device is provided to prevent a dielectric layer from being degraded, by performing a subsequent annealing process for crystallizing the dielectric layer without oxidizing an electrode and an interconnection material in a state that the dielectric layer is stabilized. CONSTITUTION: A dielectric layer is formed by using an oxide layer including at least one of Pb, Zr, Ti, Ta and Ba. Upper and lower electrodes of a capacitor are formed by metal of which a standard Gibbs free energy value is larger than that of a metal oxide used in forming the dielectric layer. An annealing process for crystallizing the dielectric layer is performed in an atmosphere that a pressure ratio of H2O to H2 is from 10E-20 to 10E0.
Patent KR-20010037283-A (KR)
Inventor: JANG JEOM GON
IPC: G08B25/00
Filed: 1999-10-15
Abstract: PURPOSE: A system for detecting a breakdown of electric current in specific areas expected to be heavily damaged thereby, such as a livestock farm, a nursery, agricultural and marine products processing areas is provided to considerably shorten a breakdown restoration time, and to previously prevent damage caused by the breakdown of electric current. CONSTITUTION: A system for detecting a breakdown of electric current comprises a breakdown detection terminal(10), a breakdown detection server(30), and a database(40). The breakdown detection terminal decides whether the breakdown happens or not. If the breakdown happens, the breakdown detection terminal transmits a breakdown detection signal via a communication network(20) to generate an alarm. When the signal is received, the breakdown detection server reports the breakdown to a specific customer, and also reports various information required to restore the breakdown to a power distribution command room(60) and a trouble report reception center(50). The database provides information such as an electric power supply information to the breakdown detection server.
Patent KR-20010046876-A (KR)
Inventor: CHOI TAE JIN
IPC: H01L21/68
Filed: 1999-11-16
Abstract: PURPOSE: A clamping distance adjusting method and a jig used thereof are to shorten a time required to adjust the distance and to prevent a defective of quality caused by the clamping distance by uniformly maintaining the distance. CONSTITUTION: A jig(50) for adjusting a clamping distance has a width larger than that of a lead frame strip(60). A fastening bolt(16) for fastening a fixing block(15,25) and a driving block(17,27) is unfastened to facilitate insertion of the jig into a widened distance between fixing rods and to present a playing space between the fixing blocks. After placing the jig at a position corresponding to a clamping position of the lead frame strip, the jig is fixed to an equipment by inserting a pin into a pin inserting hole(51) of the jig. Under a state that a tong(13,23) of a clamper(11,21) is stuck to the jig, the bolt is fastened at a specific location of a fastening hole(19,29) formed on the fixing block to fasten the fixing block and the driving block. By driving a cylinder rod(41,46) of a pneumatic cylinder(40,45) of the clamper, the driving block is rotated and the fixing block is spread to remove the jig.
Patent KR-20000052385-A (KR)
Inventor: IKANOMITSUHIRO
IPC: G01R31/28
Filed: 1999-11-26
Abstract: PURPOSE: A pattern selecting apparatus is provided to increase a frequency of a pattern data applied to an each pin of the device to be tested without increasing the frequency of the pattern data produced by a pattern producer. CONSTITUTION: A pattern selecting apparatus comprises the k number of pattern selecting circuit(20-1)-(20-k). A pattern datas(Q1)-(Qk) are applied to an each pin of a memory device through a pin electronic circuit from each of the pattern selecting circuit(20-1)-(20-k). A different property of the pattern data is assigned to a signals(S1-1)-(S1-q). Each pattern selecting block maintains an n number of a pattern selecting data in a register so as to choose the pattern data. A clock is applied to a signal(S31-1)-(S31-m) by enabling one of the signals(S4-1)-(S4-n), and the pattern selecting data which is time-divisioned on a signal(S5) is set up as a register. Each pattern selecting block outputs the pattern data as a signal(S7-1)-(S7-m) by selecting and changing the n kinds of pattern selecting data according to a signal(S2). One of signal(S6-1)-(S6-m) switched to m times frequency of the pattern data is high leveled, and choose one of the signal(S7-1)-(S7-m) with an AND gate(31-1)-(31-m). A multiplexed signal(S9-1) with an OR gate(32) is outputted to a certain pin of the device to be tested.
Patent KR-20010048624-A (KR)
Inventor: KANG SIN EON
IPC: B22D11/00
Filed: 1999-11-29
Abstract: PURPOSE: A dummy bar mounted apparatus for inspecting rolls in a continuous casting machine is provided to measure roll conditions of segments of the continuous casting machine during the operation by additionally mounting a body on which a non-contact type roll gap sensor and roll bending sensor are mounted between the chain connecting parts of a dummy bar chain connected to the back end of a dummy bar head. CONSTITUTION: In forming an apparatus for measuring roll conditions as passing through segments of a continuous casting machine, the dummy bar mounted apparatus for inspecting rolls in the continuous casting machine comprises a body (1) installed between chain connecting parts (13) of a dummy bar chain (12) connected to the back end of a dummy bar head (11); at least one or more non-contact type roll gap sensors (3) measuring a roll gap and at least one or more non-contact type roll bending sensors (4) measuring a roll bending which are mounted on the surface of both sides of the body (1); and a data transmitter (5) wireless transmitting the processed data after collecting and processing data measured at the roll gap sensors (3) and the roll bending sensors (4).
Patent KR-20010053670-A (KR)
Title: Golf mat for exercise
Inventor: HAN CHOON JA
IPC: A63B69/36
Filed: 1999-12-01
Abstract: PURPOSE: Provided is a golf mat for exercise which forms projection parts in multiple hole cups and around the hole cup irregularly to get the same effect as field so that it improves exercise effect in putting. CONSTITUTION: In the golf mat for exercise wherein front and rear part are raised toward the rear part to get slide to a certain degree, the hole cup is formed in a body part and a cover is made of artificial grass in the upper side of the body part, the golf mat for exercise is characterized by forming multiple hole cups(60) in the rear part of the body, the projection parts(50) in the external upper side of the hole cup and a suspension rim(51) in the external side of the rear part.
Patent KR-20010055938-A (KR)
Inventor: JUNG CHANG GEON
IPC: B23P17/00
Filed: 1999-12-13
Abstract: PURPOSE: A clamp-off chuck prevents damage and permanent deformation due to the collision with a valve guide on chucking the valve guide. CONSTITUTION: A chuck includes a holder(2), a clamp-off boss(3), a pin(4) and a main body(1). The holder(2) is where a valve guide is inserted and has a hollow cylindrical part(5) with a groove(6) on the place corresponding with a groove(8) formed on the periphery of the valve guide. The clamp-off boss(3) is placed on the upper part of the holder(2) to contact with the upper end of the valve guide chucked in the holder(2). The pin(4) passes through the clamp-off boss(3) and the hollow part of the valve guide chucked in the holder(2). The main body(1) accommodates the holder(2) and the clamp-off boss(3). The valve guide is chucked in the holder(2) as an O-ring(7) inserted in the groove(6) formed on the cylindrical part(5) of the holder(2) is placed in the groove(8) of the valve guide.
Patent KR-20010057304-A (KR)
Inventor: JANG UNG SEONG
IPC: B23K9/32
Filed: 1999-12-21
Abstract: PURPOSE: A fixing device for welding a sheet metal is provided to precisely fix the sheet metal in an ideal state not to generate an error in welding or deformation of the sheet metal in welding the sheet metals. CONSTITUTION: A main fixing bar (2) contains a fixer by forming a guide groove on a basic support bar. The main fixing bar is transferred on the basic support bar. Subsidiary fixing apparatuses (4) are installed on the main fixing bar while having springs (41) and spring fixing nuts (40). Herein, force by the spring is efficiently transferred to a fixing plate (43) through a ball joint (42). The subsidiary fixing apparatuses are arranged on a welding line for supplying uniform stress to a sheet metal. Moreover, uniform stress is applied to the sheet metal regardless of deviation in thickness by fixing the fixing plate through the ball joint.
Patent KR-20000017910-A (KR)
Title: Prompt decision system for credit card
Inventor: YIM SANG JIN
IPC: G06F15/00
Filed: 1999-12-21
Abstract: PURPOSE: A prompt decis ion system for credit card is provided to enable a member store using this system to promptly decide approve after approval. CONSTITUTION: When a member store(7) connected to a main host(1) of an opration company requests an approval to a host(2) of a card company through the main host(1), the approved number is indicated in a terminal of the member store(7) through the main host(1) of the operation company. Commissions are transferred automatically from a main account(9) of the operation company to the account of the member store(7) using the PC/PHONE banking system(8) of the bank at once.
Patent KR-20010058108-A (KR)
Title: Device for supplying electric power
Inventor: KIM YOUNG IL
IPC: H01R35/00
Filed: 1999-12-24
Abstract: PURPOSE: A power supply device is provided to increase the convenience of a user by easily and rapidly installing a power supply line and a consent regardless of its position. CONSTITUTION: The first receiving groove(14) in which an electric wire(12) is wired and the second receiving groove(18) in which an electric wire(16) is wired is formed in a body(10). A consent(40) is composed of a body(44), the first connection flap(46) and the second connection flap(48). A connection hole(42) is formed in the front of the body(10). The first connection flap is inserted into the first receiving groove(18), and connected to the electric wire(12). The second connection flap is inserted into the second receiving groove(18), and connected to the electric wire(16). A security cover(60) is equipped with a plate(62) installed in a part of the body(10) and a plurality of insertion flap(64) inserted into each receiving groove(14,18,22).
Patent KR-20010064135-A (KR)
Inventor: KANG SANG WON
IPC: G10L19/06
Filed: 1999-12-24
Abstract: PURPOSE: A fast searching method of a line spectrum pair quantizer according to predictive split vector quantization and predictive split matrix quantization is provided which reduces the size of a code book to be searched using sequence characteristic of line spectrum frequency coefficient in a vector code book searching procedure requiring lots of calculations, to decrease the amount of calculations without attenuating spectrum distortion performance. CONSTITUTION: A criterion is obtained using a target vector changed to have sequence characteristic and an object code vector. A DC component is added to the object code vector and a new code book for five sub-matrices is made. A specific row used for deciding a searching range is selected from a code book reconstructed to have sequence characteristic and code vectors are descending-aligned. The searching range is determined using the sequence characteristic of the target vector having the sequence characteristic and aligned code vectors. The criterion is calculated only within the determined searching range to find an optimal object code vector.
Patent KR-20010061214-A (KR)
Inventor: JUNG WON MUN
IPC: F01M11/00
Filed: 1999-12-28
Abstract: PURPOSE: An oil filler cap is provided to prevent the loss of an oil filler cap and to promote precision by rotatably integrating the oil filler cap with a cylinder head cover. CONSTITUTION: An oil filler cap(40) comprises a rotary cap(42), an opening/shutting bolt(44), and a clamp(46). The rotary cap is formed to be aligned to an oil filler(48) on one side of a hinge shaft(50). The opening/shutting bolt is formed on the other side of the hinge shaft of the rotary cap to be inserted into a bolt hole(58) of the pressurizing clamp and connected to a bolt connecting hole(60) of the oil filler. Thus, the oil filler is opened and closed via the opening/shutting bolt. The pressurizing clamp is secondly connected to the oil filler by being assembled to the rotary cap via the opening/shutting bolt. As the oil filler cap is integrated with a cylinder head cover, the loss of the oil filler cap during oil filling is prevented. Further, the oil filler cap is promptly assembled according to an integrated oil filler cap mounting process.
Patent KR-20010061445-A (KR)
Inventor: CHOI JONG GYO
IPC: G01N27/00
Filed: 1999-12-28
Abstract: PURPOSE: A measuring device for a phase transformation in strong magnetism is provided to accurately measure the phase transformation during a heating process by rapidly heating or cooling a sample without the quenching of a superconductive electromagnet. CONSTITUTION: A phase transformation measuring device(100) consists of a hollow body(110); a sample installation stand(130) inserted into the body with a sample(120) inside; a bore(112) penetrated through the body; a superconductive solenoid electromagnet(150) roundly arranged in both sides of the bore; a liquid helium chamber(152) covering the electromagnet; a vacuum chamber(154) outside the liquid helium chamber; a liquid nitrogen chamber(156) outside the vacuum chamber; and a vacuum chamber(158) outside the liquid nitrogen chamber. A hollow water jacket(134) is inserted into the bore and a coil type dual tube(136) covers the sample. The coil type dual tube comprises an inner conduit and an outer conduit. The inner conduit injects refrigerants through many injection ports. A linear variable differential transformer(125) detects the displacement of the sample and a thermometer(128) detects the temperature of the sample. Then, the changes of the displacement and the temperature are transmitted to a data acquisition(137).
Patent KR-20000017958-A (KR)
Inventor: LEE JAE HOON
IPC: A47C17/34
Filed: 1999-12-30
Abstract: PURPOSE: A combination sofa and bed is provided to operate safely under the frequent usage circumstances, so that it is easily used from a sofa to a bed or conversely. CONSTITUTION: A roller(31,32) is set up on the side of backplate(30), so that it move along with the guide-groove established in the vertical and horizontal part of a right and left armrest. In the case of being conversed from a bed to a sofa, simultaneously it acts as a lever does, so that it easily raise backboard(30) to support more stably the backboard(30). By connecting with pin(21) on the lower part, the support(23) is set up under the bottom board(20), so that the pin(21) attached to back board(30) moves back and forth at a certain distance along with the movement of backboard(30) and at the same time one side declined support is set up to play a role as the end edge of the backboard raises the bottom board (20), simultaneously when being used as a sofa on the one end edge of the bottom board(20).
Patent KR-20000029777-A (KR)
Inventor: HEINE GUENTER DR
IPC: H01J29/07
Filed: 1997-07-31
Abstract: PURPOSE: A shadow mask for the color braun tube is provided to avoid to a large extent doing of the shadow mask, which is caused by the effect of electron beams. CONSTITUTION: Inexpensive steel is used as a shadow mask material for the color brauntube. The shadow mask is characterized in that its cathode-side surface is provided with at least one heat insulating layer(32) and with at least one heavy metal-containing covering layer(34). The heat insulating layer(32) being arranged between the shadow mask(22) and the covering layer(34) and made of temperature resistant porous solid matters. Since the covering layer(34) contains heavy metals such as chalcogenide, only a little electron beam(40) is reflected. The remnant electron beam lose the energy in the covering layer(34) so the heat is generated. But the heat insulating layer(32) prevent the heat transfer to the shadow mask(22).
Patent KR-20000029860-A (KR)
Title: Semiconductor device and its manufacture
Inventor: HIRATANI MASAHIKO
IPC: H01L21/8242
Filed: 1996-08-07
Abstract: PURPOSE: A semiconductor device and its manufacturing method are provided for semiconductor device using oxide dielelctric as a capacitor suitable for Large Scale Integrated circuit. CONSTITUTION: An oxide dielectric is used in a capacitor of a semiconductor device. The semiconductor device comprises a substrate(10), a lower electrode layer(11) provided on the substrate(10), an oxide dielectric layer(16) provided on the lower electrode layer(11), an upper electrode layer(17) provided on the oxide dielectric layer(16). The lower and upper electrode layer(11, 17) and the oxide dielectric layer(16) constitutes oxide dielectric capacitor. The lower electrode layer(11) has a conductive oxide layer(12). The conductive oxide layer(12) comprises 2 layers(14, 15) having same crystal structure. The layer(14) near the substrate(10) has oxigen deficiency.
Patent KR-20000068999-A (KR)
Title: 이동 통신 장치
Filed: 1997-09-19
Abstract: 기지국 장치와 이동국 장치 사이에서 CDMA/TDD 방식에 기초한 데이터 통신을 실행하는 경우, 기지국 장치 및 이동국 장치에서 송신 데이터의 유무에 따라 송신 동작을 온/오프시키는 VOX 제어를 행하고, 기지국 송신측이 송신 오프일 때에는 이동국 수신측은 기지국 장치로부터 상시 송신하고 있는 채널을 수신하여 오픈 루프 송신 전력 제어를 실행하며, 이동국 송신측이 송신 오프일 때에는 이동국 장치는 송신 전력이 작은 더미 슬롯을 송신하고, 기지국 수신측은 더미 슬롯을 수신하여 송신 스페이스 다이버시티를 실행한다.
Patent KR-20000069626-A (KR)
Title: 탄성 접촉하는 플립칩형 접속
IPC: H10K59/90
Filed: 1997-12-19
Abstract: 본 발명은 탄성 접촉부를 가지는 자기 정렬 플립칩의 장착 구조에 관한 것이다. 본 발명은 자동 정렬 구조와 결합되는 비영구적인 접합을 달성하기 위해 문제점을 해결한다. 본 발명은 부품들의 연속적인 중심 집중을 확실하게 하는 대칭적인 탄성 정렬을 제공한다. 이것은 원형으로서 이방성 에칭 실리콘을 사용하여 성형된 탄성체 범프 구조(204)를 가지는 기판(202)에 기초하는 플립칩 구조(200)를 사용함으로써 달성된다. 기판상의 탄성 범프(204)의 패턴은 플립칩(214)상의 패드 패턴 (210)에 대응한다. 범프(204)는 금으로 코팅될 수 있고, 전기 접촉부(206)로서 및 수직 배치를 위해 작용한다. 범프(204) 근처에는, 플립칩(214)의 경사진 벽(222)과 동일한 형상의 경사진 프레임 벽(220)을 가지는 탄성 물질의 안내 프레임(212)이 존재한다.
Patent KR-20000062391-A (KR)
Title: 파네실 트랜스퍼라제 억제제
IPC: A61P35/00
Filed: 1997-12-23
Abstract: 본 발명은 화학식 1의 신규 산물, 이의 제조방법, 이를 함유하는 약학 조성물 및 의약 제조를 위한 이의 용도에 관한 것이다.   화학식 1에서, Ar은 치환되거나 축합된 페닐 라디칼, 또는 폴리사이클릭 또는 헤테로사이클릭 방향족 라디칼을 나타내고; R은 화학식 -(CH 2 ) m -X 1 -(CH 2 ) n -Z의 라디칼을 나타내고 X 1 은 단일 결합, O, S를 나타내며; m = 0, 1; n = 0, 1, 2; CH 2 라디칼은 치환될 수 있으며; Z는 카복시, COOR 6 , (R 6 = 알킬), CON(R 7 )(R 8 ) (R 7 = 수소 또는 알킬) 및 R 8 = 수소, 하이드록시, 아릴설포닐, 헤테로사이클릴, 임의로 치환된 아미노, 임의로 치환된 알킬옥시, 임의로 치환된 알킬, 아미노, PO(OR 9 ) 2 (R 9 = 수소 또는 알킬), -NH-CO-T(T = 수소 또는 임의로 치환된 알킬), 또는 화학식 2에서, R 1 및 R 2 = 수소 또는 할로겐 또는 알킬, 임의로 치환된 알킬옥시, 알킬티오, 알킬옥시카보닐이거나 또는 R 1 및 R 2 는 서로에 대하여 오르토 위치에 존재하여 임의로 치환되는 1 또는 2개의 헤테로 원자를 함유하는 헤테로사이클릭 화합물을 형성하며; R 3 및 R 4 = 수소 또는 할로겐 또는 알킬, 알킬렌, 알킬옥시, 알킬티오, 카복시 또는 알킬옥시카보닐;  R 5 = 수소, 알킬, 알킬티오; X = O 또는 S 또는 -NH-, -CO- 메틸렌, 비닐디일, 알켄-1,1-디일 또는 사이클로알칸-1,1-디일; 및 Y = O 또는 S(라세미체 형태 및 화학식 1의 산물의 광학 이성체 및 염).   화학식 1의 산물은 현저한 살종양성 및 항-백혈병성을 보이는 파네실 트랜스퍼라제의 억제제이다.
Patent KR-20000070025-A (KR)
Title: 디지탈 신호의 평가 방법
IPC: H04H20/26
Filed: 1997-12-30
Abstract: 본발명에서는, 디지탈 신호가 즉 방송수신기에 설정된 송신 주파수와는 다른 송신주파수로 전송되는 것이 제안된다. 이에 대해서 판독사이클의 내부에 방송수신기의 수신부는 본발명의 방법을 실행하기 위해서 디지탈 신호의 비트가 차례로 오는 기간 동안에 순간적으로 작용하는 주파수에서 다른 주파수로 변환접속되며 그리고 일시적인 변환접속이 되는 경우에 수신된 디지탈 신호의 비트는 중간 저장된다. 이 중간 저장된 디지탈 신호의 비트가 판독사이클과 연결되는 동시에 평가된다.
Patent KR-20000070422-A (KR)
Title: 띠강판 권취 장치
IPC: B65H19/30
Filed: 1998-11-26
Abstract: 저비용으로 고속 권취가 가능한 띠강판 권취 장치를 제공하는 것을 목적으로 하고, 수직면내에 회전 구동 가능하게 마련된 원형 지지 프레임(6)상에 복수개의 개별 구동되는 맨드릴(7)을 포함한 캐루셀형 권취기(5)와, 해당 권취기(5)의 권취 개시 위치의 맨드릴 주위 위치와 후퇴 위치 사이에 진퇴 이동 가능하게 마련한 복수개의 유닛 롤(22a∼22d)을 지지하는 롤식 권취 장치(10)를 구비하였다.
Patent KR-20000076106-A (KR)
Title: 혼합 음료 디스펜서
IPC: B67D1/08
Filed: 1998-03-13
Abstract: 하우징과, 수조와, 냉동 시스템과, 농축액 패키지 격실과, 격실용 냉각 시스템과, 상기 수조 내부에 냉각 코일을 포함하는 음용수 회로로 이루어지는 혼합 음료 디스펜서. 상기 농축액 패키지는 바람직하게는 가요성 튜브를 가지는 백-인-박스 패키지이고, 상기 디스펜서는 엔코더를 가지는 기어헤드 모터에 의하여 구동되는 연동식 펌프를 가진다. 상기 음용수 라인의 흐름계는 비율 제어용 펌프의 속도를 제어하는 제어 시스템에 정보를 공급한다. 비율 카드는 도어 내부의 슬로트에 삽입되어, 각 BIB 패키지에 사용되는 비율을 상기 제어 시스템에 알려준다. 착탈형 물 노즐은 개량된 혼합 기능을 제공한다. 개량 서브어셈블리 및 그 제법에 대하여 기술된다. 음용수 물 냉각 코일은 증발기 코일의 상부에 설치되고, 상기 수조로부터 분리 제거될 수 있다.
Patent KR-20010013184-A (KR)
Inventor: FREI WILLI
IPC: B42F7/02
Filed: 1997-08-12
Abstract: The invention relates to a flat transparent envelope comprising a rectangular, transparent cover sheet (1) and a rectangular, preferably transparent backsheet (2). The cover sheet (1) and backsheet (2) are flexible films joined together along at least two but no more than three of their edges so that the envelope is open along at least one of the sheet edges. The edges of the joined sheets are situated in the envelope plane and the transparent cover sheet (1) consists entirely of a magnifying material.
Patent KR-20010073559-A (KR)
Title: A ballless bearing
Inventor: PARK GYE HUN
IPC: F16C39/06
Filed: 2000-01-18
Abstract: PURPOSE: A bearing without a ball is provided to rotate the bearing under the non-contact state by magnetizing an outer diameter part of an inner wheel and an inner diameter part of an outer wheel with a polarity N instead of omitting the ball, thereby reducing the noise and simplifying the manufacturing. CONSTITUTION: A bearing without a ball includes an inner wheel(110) to be inserted by a center of a rotation shaft, formed with cut parts(111) at both ends of an outer diameter part with a stepped part and mounted with a polarity N on an outer diameter part, an outer wheel(120) formed with a protrusion part(121) on an end of an inner diameter part to be fitted in one of the cut parts of the inner wheel and a cut part(122) on an outer diameter part of the other end of the inner diameter part with a stepped part, and mounted with a polarity N on the inner diameter part and a polarity on the outer diameter part, and a side surface core(130) to be pressed into the cut part of the outer diameter part and fitted into the other cut part of the inner wheel, wherein the outer diameter part of the inner wheel and the inner diameter part of the outer wheel are magnetized with the same polarity.