baber/WOPTO huggingface dataset:
Patent KR-20020046340-A (KR)
Title: The apparatus of FED which is sustained single-body spacer per some unit pixel
Inventor: JANG BO UNG
IPC: H01J1/304
Filed: 2000-12-12
Abstract: PURPOSE: A field emission display device having a built-in spacer supporting unit pixels is provided to enhance a junction characteristic and an alignment characteristic of a spacer by improving a structure of the field emission display device. CONSTITUTION: A cathode electrode(311) as a cathode, a gate electrode(312) as an anode, an emitter tip(313) for emitting electrons, and a field emitter formed as an insulating body(301) are formed on a lower substrate(310). An anode electrode(303) as the anode, a fluorescent body(302), an anti-reflective layer(301) are formed on an upper substrate(300). A spacer(320) is used for maintaining constantly an interval between the upper substrate(300) and the lower substrate(310). A frit(330) is used for sealing a space between the upper substrate(300) and the lower substrate(310) which are bonded by the spacer(320). The amount of electron is controlled by a predetermined electromagnetic field when the predetermined electromagnetic field is applied to the cathode electrode(311) and the gate electrode(312). An intermediate electrode(321) is inserted into the spacer(320) in order to change a direction of the electron.
Patent KR-20010016513-A (KR)
Title: Device for controlling heating boilers with hot water tank
Inventor: JUNG MOON WHA
IPC: F24H9/20
Filed: 2000-12-15
Abstract: PURPOSE: A hot water boiler control device is provided to minimize operation period and to improve heat transferring volume at a heat transfer face of a heat exchanger in a hot water boiler by keeping hot water reservoir temperature of a hot water tank. CONSTITUTION: A hot water boiler control device comprises a temperature sensor(5) detecting refill-water temperature supplied to a hot water tank(9) through a refill-water feed pipe; a temperature sensor(6) perceiving hot water temperature of a hot water discharge pipe(11a) from the hot water tank; a temperature sensor(7) detecting hot water temperature discharging to a hot water discharge pipe(9a) of a hot water boiler(1); a combustion control(4) equipment input an analogue signal with the temperature sensor as a control input element; a signal conversion unit changing the analogue signal into a digital signal; an analysis processing unit formed of a microcomputer generating an output control signal by analyzing the digital signal; an output unit composed the analysis processing unit, a relay and a driving circuit; an indication unit formed of an LCD(Liquid Crystal Displayer) displaying the output result; and an established value input equipment. The hot water heated in the hot water boiler is moved to the hot water tank through the hot water discharge pipe by a circulation pump(8). Thereby, temperature of water in a heat exchanger(1a) of the hot water boiler is raised according to increasing temperature of the hot water tank and is reached to TS-off. Then a burner condition(BC) changes into a stopping (OFF) so that the temperature of water in a heat exchanger to maintain hot water temperature of a hot water boiler outlet.
Patent KR-20020049846-A (KR)
Title: Circuit and method for selecting charge or discharge of high voltage
Inventor: PARK MYEONG RI
IPC: H02J7/00
Filed: 2000-12-20
Abstract: PURPOSE: A high-voltage charge/discharge selecting circuit and a method thereof are provided to save time required for charge and discharge operations by performing the advance charge operation before an operation signal of a user is inputted. CONSTITUTION: An outer signal input unit(100) receives a charge mode selecting signal and a start signal by a user operation. A control unit(200) sets an operation mode of a high-voltage charge/discharge selecting circuit with a charge mode selected by the user through the outer signal input unit(100) and controls the operation of the high-voltage charge/discharge selecting circuit by the start signal. A charge signal generating unit(400) generates a discharge signal by the control of the control unit(200). A discharge signal generating unit(500) generates a discharge signal by the control of the control unit(200). A power supply unit(300) supplies power to the charge signal generating unit(400) by the control of the control unit(200).
Patent KR-20010062631-A (KR)
Inventor: PITTS ROBERT L
IPC: G11C29/04
Filed: 2000-12-22
Abstract: PURPOSE: A read/write protected electrical fuse is provided to program an electrical fuse chain that includes read and write protection capabilities. CONSTITUTION: The electronic system(10) includes a static random access memory(SRAM) device(18), a fuse control logic device(22), an analog module(30), and a device labeled other(34). The analog module(30) utilizes trimming fuses(28) for analog trimming control of analog devices within the analog module(30). In addition, the electronic system(10) includes customer fuses(24) for setting customer owned configuration bits. Finally, the electronic system(10) includes die identification fuses(32) that allows for die identification. The fuse control logic(22) generates appropriate signals which allow loading, programming, reading, and testing of the various fuse implementations. It is to be noted that serial programming of the various electrical fuse chains allows for programming of electrical fuses in one element of one chain simultaneously to minimize the power supply and signal routing requirements.
Patent KR-20020051792-A (KR)
Title: Filter of fixing device for vacuum cleaner
Inventor: PARK SANG JUN
IPC: A47L9/10
Filed: 2000-12-23
Abstract: PURPOSE: A dust filter attachment confirmation structure of a vacuum cleaner is provided to block a couple of a dust barrel into a vacuum cleaner body if a dust filter is not mounted at a dust barrel. CONSTITUTION: A dust filter attachment confirmation of a vacuum cleaner comprises a cover(20) and a dust filter. The cover(20) is composed of a discharging hole(22) for discharging air separated from a foreign material, a conforming piece(26), and an attaching portion for attaching and detaching the dust filter. The dust filter includes a plurality of coupling pieces for coupling at the coupling portion of the cover, a plurality of coupling recesses formed between the coupling pieces, and a protruding piece. The protruding piece is formed at one side of the coupling piece and rotates the conforming piece.
Patent KR-20020054819-A (KR)
Title: Method for correcting soc of battery
Inventor: PARK SEON SUN
IPC: H02J7/00
Filed: 2000-12-28
Abstract: PURPOSE: A method for compensating for remaining capacity of a battery is provided to reduce a measurement error by compensating for the remaining capacity in a voltage contrast small remaining capacity period of the battery in an electric car. CONSTITUTION: A charge controller calculates a remaining capacity of a battery based on a charge voltage, a traveling status of a car, and a variable of a peripheral circumstance(S100-S120). The charge controller firstly differentiates the calculated remaining capacity to a voltage(S130). The charge controller secondly differentiates the first differentiated capacity to the voltage(S140). A voltage corresponding to a time point when the value starts to change among differentiated values is set to a reference time point of a remaining capacity compensation(S150). A charge/discharge section is driven to compensate for the remaining capacity by a set compensation reference time point(S160).
Patent KR-20020058439-A (KR)
Title: Image sensor capable of increasing light sensitivity and charge transport
Inventor: KWON GYEONG GUK
IPC: H01L27/14
Filed: 2000-12-30
Abstract: PURPOSE: An image sensor for improving light sensitivity and a charge transfer characteristic is provided to increase an overlapped area between a photo diode and a gate electrode of a transfer transistor and reduce an overlapped area between a floating diffusion region and the gate electrode of the transfer transistor. CONSTITUTION: A photo diode(PD) has one edge portion which is formed by one shaded portion. One side of a channel region of a transfer transistor is contacted partially with the shaded portion of the photo diode(PD). A floating diffusion region(FD) is contacted with the channel region of the transfer transistor. A gate electrode(Tx) of the transfer transistor is overlapped on a part of the photo diode(PD) and the channel region. The gate electrode(Tx) of the transfer transistor is parallel to the shaded portion of the photo diode(PD).
Patent KR-20010022720-A (KR)
IPC: G11B27/10
Filed: 1999-06-09
Abstract: 프로그램 영역에 기록되는 메인 데이타를 패킷화한다.  상기 각 패킷(packet)에는 개개의 패킷의 데이타 길이를 관리하는 헤더(packet property) 및 복수의 패킷을 집합화하여 팩으로서 관리할 때에 상기 팩을 일괄 관리하는 관리 영역(packet index)을 구비한다.  액세스시에는 개개의 팩에 포함되는 헤더(packet property)를 재생하고, 사전에 내주의 관리 영역(packet index)을 재생함으로써 팩 전체(즉, 집합화된 패킷)에 포함되는 개개의 패킷이 액세스 가능하게 된다.
Patent KR-20010023369-A (KR)
Title: Ｆｅｄ 장치의 휘도를 제어하는 회로 및 방법
IPC: G09G3/22
Filed: 1998-05-28
Abstract: 디스플레이 스크린(200)의 휘도를 제어하는 회로(300) 및 방법이 평판 전계 방출 디스플레이(FED) 스크린(200)을 이용하여 실행되었다. FED 스크린(200)을 가로지른 휘도의 변화로 인한 행들(230)에 인가된 전압(212)을 변경하기 위해, 휘도제어회로(300)가 행드라이버(220)를 가로질러 배치된다. 인가된 전압(212)은 FED 스크린(200)의 휘도를 변경하도록 펄스폭 변조 또는 진폭 변조될 수 있다. 하나의 FED 스크린(200) 실행에서, 행전압(212)을 변경하는 것이 더 효과적이다; 그러나, 본 발명의 대체 실시예에서, FED 스크린(200)의 휘도를 변경하도록 열전압(207)이 진폭 또는 펄스폭 변조된다. 본 발명의 휘도제어회로(300)는 수동 휘도 손잡이(520)에 대응하여 이루어질 수 있거나 주위 광센서(580a,580b)에 대응할 수 있다.
Patent KR-20010032037-A (KR)
Title: 개선된 주머니 구조물을 갖는 턱받이
IPC: A41B13/10
Filed: 1998-11-16
Abstract: 본 발명은 개선된 주머니를 갖는 턱받이를 제공한다.  상기 턱받이는 몸통부 패널, 주머니 패널, 및 몸통부 패널과 주머니 패널 사이에 위치한 제 3 패널을 갖는다.  제 3 패널은 주머니가 벌어진 형태로 유지되는데 도움을 준다.
Patent KR-20010032656-A (KR)
IPC: H04N5/74
Filed: 1998-12-01
Abstract: 본 발명은 1개 이상의 프로젝터를 조정하는 방법을 제공하고, 각 프로젝터는 복수의 다른 색상의 광빔을 발생시키고, 프로젝터의 통상적인 사용시에 투사된 화상을 자동적으로 조정한다는 점에서 특징이 있다.    프로젝터의 통상적인 사용시에, 즉 공중으로의 투사시에 투사된 화상을 조정한다는 사실때문에, 항상 최적의 화상을 얻을 수 있거나, 또는 적어도 최적의 화상을 얻기 위한 시도를 할 수 있다.    따라서, 초기 보정시에 어떤 영향을 받지 않거나 알려지지 않은 팩터(factor)에 의해 특정한 보정이 영향을 받는다는 사실로부터 발생하는 오차를 방지할 수 있다.
Patent KR-20010052163-A (KR)
IPC: F24D3/14
Filed: 1999-02-10
Abstract: The invention relates to a floor heating device comprising an electric heating cable (5) extending backwards and forwards underneath the floor surface (9) to be heated. Metal panels (1, 1a, 1b, 1c, 1d) of rectangular or square configuration are provided with channels (3, 3a, 3b, 3c) extending in parallel in the direction of deposition of the panels. Each metal panel (1, 1a, 1b, 1c, 1d) is fitted on its reverse side with an insulating panel (2) in a sandwich construction in such a manner that the channels (3, 3a, 3b, 3c) of the metal panel (1, 1a, 1b, 1c, 1d) penetrate into the material of the insulating panel (2). The assembled panels (1, 1a, 1b, 1c, 1d) and panels (2) are deposited on the support (4) of the floor in juxtaposed relationship in the longitudinal and transverse directions in such a manner that each channel (3, 3a, 3b, 3c) of one metal panel (1, 1b, 1c, 1d) continues into another channel (3b, 3c, 3a, respectively) formed in the adjacent metal panels (1b, 1c, and 1a, respectively) at the end edge sides of the first metal panel. The heating cable (5) is arranged inside said channels (3, 3a, 3b, 3c) so as to extend from one metal panel (1a) to the next backwards and forwards across the floor.
Patent KR-20010041670-A (KR)
Title: 평베어링
IPC: C08L27/12
Filed: 1999-03-03
Abstract: 본 발명의 평베어링은 금속 받침, 금속 받침에 결합된 소결된 다공성 금속층 및  다공성 금속층의 구멍으로 침투되고, 소결된 금속층에 덮어씌운 라이닝층으로 이루어진 평베어링에 있어서, 상기 라이닝층이 입자 내마모 충전재 10 ~ 30  부피%, 피브릴화 아라미드 섬유 2 ~ 10 부피% 및 용융 처리가능한 플루오로폴리머 2 ~ 10 부피%를 함유하는 PTFE로 이루어진다. 용융 처리가능한 플루오로폴리머는 테트라플루오로에틸렌-헥사플루오로프로필렌, 테트라플루오로에틸렌-퍼플루오로알킬비닐에테르 및 모노플루오로알콕시로 이루어진 군의 코폴리머이다. 이와 같은 베어링은 우수한 케비테이션 부식 저항을 나타내며, 통상적으로 받침재료에 적용되는 성분들의 혼합 후에 실시되는 소결 작용의 온도 및/또는 지속시간의 증가에 의해, 상당히 향상된 피로강도를 나타낸다.
Patent KR-20010043185-A (KR)
Title: Ｅｍｉ 차폐 방호물
IPC: H05K9/00
Filed: 1999-03-31
Abstract: 성형된 EMI 차폐 커버에 결합된 인쇄회로의 그라운드 플레인을 포함하는, 전자 어셈블리용 EMI 차폐 방호물.  커버는 섬유 코트에 의해 대부분 둘러싸인 섬유를 갖는 섬유상 금속 매트를 위한 캐리어를 포함하여, 수개의 층으로 이루어진 복합 시트를 열성형함으로써 얻어진다.  커버와 그라운드 플레인을 접속하여 EMI 차폐 방호물을 형성하기 위해서는 섬유 코트를 그라운드 플레인의 주변에서 인쇄 회로를 접부착시킬 필요가 있다.
Patent KR-20010053137-A (KR)
Title: 중합체 라텍스로부터 미반응 모노머를 제거하는 장치 및방법
IPC: B01D3/22
Filed: 2000-04-21
Abstract: 발포성이 높은 중합체 라텍스 중에 포함되어 있는 미반응 모노머를, 고효율로 제거회수하는 장치 및 방법이며, 상기 장치는 원통형의 탑본체와, 이 탑본체 내에 수직방향으로 설치된 다수의 세공을 갖는 하나 또는 복수의 선반판과, 이 선반판상에 설치된 구획벽 및 오버플로벽과, 상기 선반판을 각각 저면으로 하여 그 위에 형성된 챔버와, 최하부의 선반판상에 형성된 챔버에 설치된 라텍스 배출구와, 상부의 선단상에 형성된 챔버에 설치된 적어도 하나의 라텍스 도입구와, 이 라텍스 도입구의 상부에 설치된 탈기구와, 상부의 선반판으로부터 하부의 선반판으로 라텍스를 흐르게 하기 위한 하강유로부와, 또한 최하단의 선반판 밑에 설치된 수증기 도입구를 갖고, 상기 선반판을 바닥면으로 하여 그 위에 형성된 챔버의 높이가 오버플로벽의 3 ∼ 300 배이며, 상기 탑단면적이 그 선반판상에 설치된 세공의 합계면적의 50 ∼ 1000 배이며, 또한 상기 장치를 사용하는 방법이 개시된다.
Patent KR-20020061350-A (KR)
Title: Optical disk drive with skew adjustment means
Inventor: AHN CHEOL UNG
IPC: G11B7/08
Filed: 2001-01-16
Abstract: PURPOSE: An optical disk drive having a tilt adjusting unit is provided to adjust a tilt of an optical pickup unit to make light, that is irradiated from the optical pickup unit, incident perpendicularly to a surface of a disk, and to prevent an excessive force to a lead screw gear. CONSTITUTION: A turntable(310a) loads a disk(D) on an upper part of an optical disk drive(300). A spindle motor(310b) rotates the turntable. An optical pickup unit(320) installed in a lower part of the disk irradiates light, to read or write information on the disk. A lead screw(510) and a guide shaft(520) installed both sides of the optical pickup unit support and guide the optical pickup unit when the optical pickup unit is moved in a radial direction of the disk. A transfer motor installed in a side part of the lead screw delivers power for moving the optical pickup unit to the radial direction of the disk. A bracket(470) connected to the transfer motor includes a connection gear set delivering power of the transfer motor to a lead screw gear installed in the lead screw. A tilt adjusting unit(400) adjusts a tilt of the optical pickup unit, and includes a cam member(410) and an adjusting member(420) corresponding thereto.
Patent KR-20010044243-A (KR)
Inventor: YOON CHOONG SUP
IPC: H04B1/40
Filed: 2001-01-22
Abstract: PURPOSE: A no-battery RFID using a power transmitter is provided to effectively and remarkably increase the transmitting distance of a no-power tag by installing a power transmitter. CONSTITUTION: A tag, operated by power received from a power transmitter, sends a modulated signal through a tag antenna(6). The antenna(6) changes an electrical signal transferred from a transmitter into a radio wave and sends it to the air. Contrarily to this, the antenna(6), receiving a radio wave transmitted from afar, changes it into an electrical signal and transfers it to a receiver. The power transmitter, separated from the receiver, supplies power to the tag using a frequency different from a modulation frequency to transmit and receive data.
Patent KR-20020063068-A (KR)
Title: Apparatus and method for inputting character and numeral on communication device
Inventor: JO WON HYUNG
IPC: H04M1/23
Filed: 2001-01-26
Abstract: PURPOSE: An apparatus for inputting a character/number in a communication terminal and an input method therefor are provided to simply input a character signal using a keypad such as a joy stick and a touch screen in which a plurality of signal sensing units are installed. CONSTITUTION: It is judged whether a user pushes a character mode key of a keypad and selects a language-classified character mode(S100). If the corresponding user selects the language-classified character mode, it is judged whether the user selects an input mode among a Hangul input mode, a Roman input mode, a Japanese input mode(S200). If the corresponding user selects the Hangul input mode, a communication terminal detects key signals inputted by the user, reads consonants/vowels and numbers/signs of a corresponding Hangul, combines the read consonants/vowels and numbers/signs, and displays the combined character on an LCD(S300). If the corresponding user selects the Roman input mode, the communication terminal detects key signals inputted by the user, reads consonants/vowels and numbers/signs of a corresponding Roman, combines the read consonants/vowels and numbers/signs, and displays the combined character on the LCD(S400). If the corresponding user selects the Japanese input mode, the communication terminal detects key signals inputted by the user, reads a Hiragana, a Gatakana, Chinese characters, and numbers/signs of a corresponding Japanese, combines the read Hiragana, a Gatakana, Chinese characters, and numbers/signs, and displays the combined character on the LCD(S500). If the character input work is ended through the one input mode among the Hangul input mode, the Roman input mode, the Japanese input mode, the communication terminal judges whether the corresponding user selects a key signal for storing the character(S600). If the corresponding user selects the storing key, the communication terminal stores the character inputted by the user(S700).
Patent KR-20010082023-A (KR)
Title: Glass panel for cathod ray tube, cathod ray tube employing this glass panel and method for producing cathod ray tube
Inventor: HACHITANI YOICHI
IPC: C03C3/095
Filed: 2001-01-30
Abstract: PURPOSE: A glass panel for cathode ray tube(CRT) is provided to make the CRT lightweight without deterioration of the resistance to pressure of a glass panel or of properties required for the CRT. CONSTITUTION: The glass panel for CRT is made of chemically reinforced glass containing 57-64 wt.% of SiO2, 0.1-4 wt.% of Al2O3, 5-10 wt.% of Na2O, 5-10 wt.% of K2O, 7-13 wt.% of SrO, 7-11 wt.% of BaO, 0.1-2 wt.% of TiO2, 0.1-4 wt.% of ZrO2 and 0.01-1 wt.% of CeO2. The glass panel further comprises at least oxides selected from a group consisting of MgO, CaO, ZnO, Sb2O3, NiO and Co2O3. The glass panel has a bending strength of more than 200 MPa and the coefficient of thermal expansion of 95-105 x 10¬-7/deg.C at 30-300deg.C.
Patent KR-20020064580-A (KR)
Title: Material for floor construction having pearl and partial concealment printing layers
Inventor: DO U SEONG
IPC: B41M1/38
Filed: 2001-02-02
Abstract: PURPOSE: A bottom decorating material having a pearl printed layer and a partial concealment printed layer is provided, thereby the design of the bottom decorating material has the three-dimensional effect and its outer appearance has inlay work, so that different design can be possible. CONSTITUTION: The bottom decorating material having a pearl printed layer and a partial concealment printed layer comprises a base layer(10), a lower layer(20) and an upper layer(30), wherein the upper layer has a foaming print middle layer(31a) or nonfoaming print middle layer, a pearl printed layer, a first transparent upper layer(33a) or hologram chip and/or synthetic fiber chip containing first transparent upper layer, partial concealment printed layer(34), a second transparent upper layer(35) and a UV layer(36), sequentially; and the pearl printed layer(32) contains urethane pearl or mica pearl.
Patent KR-20020064845-A (KR)
Title: Reader coil antenna and non-contacting type card identification system using the same
Inventor: KIM TAE HO
IPC: B42D15/10
Filed: 2001-02-03
Abstract: PURPOSE: A reader coil antenna and a non-contact card authentication system using the same are provided to increase reading distance for reading a non-contact card by using intensity of magnetic field generated from the reader coil antenna. CONSTITUTION: A reader coil antenna has an external coil(120) and an internal coil(140) in order to form a predetermined magnetic field according to applied current. The internal coil(140) is arrayed in an inside of the external coil(120). The internal coil(140) and the external coil(120) are formed with one body. The external coil(120) and the internal coil(140) are connected to terminals(160,180) as signal input/output paths, respectively. The external terminal(160) of the terminals(160,180) is used as a signal input line. The internal terminal(180) of the terminals(160,180) is used as a ground line. The external coil(120) and the internal coil(140) are formed on a printed circuit board(50).
Patent KR-20020066084-A (KR)
Title: Apparatus for compensating multipath fading channels in wireless personal area network
Inventor: BAEK JONG HO
IPC: H04B15/02
Filed: 2001-02-09
Abstract: PURPOSE: An apparatus for compensating a channel distortion in a WPAN(Wireless Personal Area Network) is provided to compensate channel distortion phenomenon by multiplying a signal received from a transmission side by a channel estimation value and recovering a phase component distorted on a channel. CONSTITUTION: A phase recovering block(10) multiplies a channel of a signal transmitted from a transmission-side modulating device by an estimation value and recovers a phase component distorted on a signal channel. A codeword correlator block(20) multiplies the signal recovered by the phase recovering block(10) by a complex codeword and obtains a decision variable through a correlation process during a symbol period. A maximum correlation detecting block(30) selects a correlation value having a maximum level from the decision variable outputted by the codeword correlator block(20), and decodes data with 6 bits according to the correlation value with the maximum value. A complex polarity detecting block(40) detects a phase using the combination of the polarity of the maximum correlation value detected by the maximum correlation detecting block(30), and decodes data with 2 bits according to the correlation value with the maximum value. A channel estimation block(50) performs a channel estimation using one codeword for generating the maximum correlation value selected by the maximum correlation detecting block(30) and the phase selected by the complex polarity detecting block(40). A receipt-side multiplex(60) combines the data with 6 bits decoded by the maximum correlation detecting block(30) with the data with 2 bits decoded by the complex polarity detecting block(40) to recover the data, and converts the recovered parallel data with 8 bits into serial data.
Patent KR-20020069704-A (KR)
Title: The vingar made from the unpolished rice and the ginseng extract etc. and it's manufacturing method.
Inventor: JUNG DUK HEE
IPC: C12J1/00
Filed: 2001-02-27
Abstract: PURPOSE: Provided are vinegar made from the unpolished rice and the ginseng, and its manufacturing method. Therefore, the vinegar contains active ingredients of the ginseng and the unpolished rice which are beneficial to the human body. CONSTITUTION: Vinegar made from the unpolished rice and the ginseng is characterized by containing active ingredients of the ginseng by adding 2-40 wt.% of the ginseng referred to the weight of the unpolished rice which is used for alcohol fermentation using the unpolished rice or acetate fermentation following alcohol fermentation. Wherein, the ginseng is selected from the ginseng concentrate, the ginseng extract, the ginseng powder or finely cut fresh ginseng.
Patent KR-20010088400-A (KR)
Title: Heating treament unit of substrate
Inventor: KUGA YASUHIRO
IPC: H01L21/687
Filed: 2001-03-06
Abstract: PURPOSE: To suppress the deformation of a heat plate due to heat contraction of a supporting member. CONSTITUTION: A heat plate 65 in a post exposure baking device is supported by an annular supporting member 70 having a circular step 70a along the inner circumference thereof. The supporting member 70 is fixed on a support 74 with a plurality of bolts 71. The bolts 71 are provided on the inner circumferential surface of the step 70a facing the outer circumferential surface of the heat plate 65, in a manner that the circumferential surface on the side of the heat plate 65 of the bolts 71 may be exposed toward the side of the heat plate 65. In addition, a collar 76 is provided around the outer circumference of the bolt 71, and the heat plate 65 is fixed at a given position by the collar 76.