baber/WOPTO huggingface dataset:
Patent KR-20030031327-A (KR)
Title: A bowling game machine use of a billiard ball
Inventor: JUNG DONG MAN
IPC: A63F7/00
Filed: 2001-10-13
Abstract: PURPOSE: Provided is a bowling game machine using a billiard ball which uses a billiard cue to throw bowling pins down at a front side so that it relieves gamers of mitigating stress with increasing health effect. CONSTITUTION: The bowling game machine using the billiard ball comprises the parts of: a fixing part for the billiard ball(2) which puts the billiard ball at one side of a plane part(1); a main body(6) which consists of a monitor(3), an electric board(4) and a speaker(5); plural bowling pins(7) which are placed at the edge of the body; a sensor which is placed at the lower part of the bowling pin and connected to a control part; an erector for the bowling pin which is placed at the lower edge of the bowling pin; plural rollers which are formed in the inner side of the plane part and connected to a motor; a connection band which fixes the roller and the bowling pin; a fixing part for billiard cue(14) which is formed at one side of the main body; and a long groove(15) which is formed at the external side of the plane part to move the billiard ball.
Patent KR-20030039061-A (KR)
Title: An Artemisia patch for moxa treatment and the method thereof
Inventor: LEE JAE BONG
IPC: A61H39/06
Filed: 2001-11-09
Abstract: PURPOSE: Provided is a mugwort patch with moxibustion function which is adhered to spots on one's body suitable for acupuncture to transfer components of mugwort to one's skin so that it helps user to get moxibustion effect conveniently. CONSTITUTION: In the mugwort patch with moxibustion function which largely consists of an adherence part(1) and a heat-insulating heating part(2), the adherence part comprises the parts of: a pad(3) which is placed at lower side of the heat-insulating heating part to transfer heat from a heating element to a gauze(4); and an adhesive band(5) which is placed under the pad to adhere the mugwort patch to one's skin. The heat-insulating heating part comprises the parts of: the heating element which is composed of a heating bag, a thin film(8), liquid sodium thiosulfate(6') and solid sodium thiosulfate(7'); and a heat-insulating material which is included to minimize heat loss.
Patent KR-20030039396-A (KR)
Title: A dried laver seasoned using fruit powder and stem powder of Opuntia ficus-indica var. saboten and the manufacturing method
Inventor: YUN SEONG GAP
IPC: A23L17/60
Filed: 2001-11-12
Abstract: PURPOSE: Provided are dried laver seasoned with fruit powder of and stem powder of Opuntia ficus-indica var. saboten and a manufacturing method thereof. Therefore, the dried laver contains nutraceutically active ingredients of Opuntia ficus-indica var. saboten, and is thus improved in its quality. CONSTITUTION: A manufacturing method of dried laver seasoned with fruit powder of and stem powder of Opuntia ficus-indica var. saboten is characterized by comprising the steps of: freeze-drying the fruit and stem of Opuntia ficus-indica var. saboten and pulverizing them; adding the powder thereof to dried laver in the amount of 0.5-20% based on the weight of salt; and roasting the laver at 275-290 deg.C for 9-14 seconds.
Patent KR-20030039694-A (KR)
Title: A water purifier of electrolysis using tourmaline
Inventor: CHAE HEE KWANG
IPC: C02F1/461
Filed: 2001-11-14
Abstract: PURPOSE: An electrolytic water dispenser using tourmaline is provided, which can produce alkali water by a simple constitution using tourmaline that generates electricity without extra electrode plates for electrolysis and is adoptable for the existing water dispensers. CONSTITUTION: In the usual cold/hot water dispenser for purifying water by water purifying part(10) consisting of microfilter and activated carbon layer and for discharging purified cold/hot water from drinking water tank(30), the dispenser is characterized in that an electrolytic part(20) filled with particulate tourmaline(22) of 1 mm to 2 mm particle size is formed in the water tank(30).
Patent KR-20030041417-A (KR)
Title: Wordline manufacturing method applicable to magnetic memory and sensors
Inventor: HAN SEOK HUI
IPC: G11C11/15
Filed: 2001-11-20
Abstract: PURPOSE: A magnetic memory and word line making method capable of being applied to sensor are provided to realize a pattern with respect to a wordline/bitline to maximize magnetic field required for converting magnetization. CONSTITUTION: An insulation film(102) is formed on a semiconductor substrate(100), and a trench of a predetermined depth is formed by using the insulation film. A seed film(106) is deposited on an entire surface of the trench. A conductive film(108) of a copper material is coated on the seed film so as to cover the trench sufficiently. A CMP process is performed until an upper surface of the insulation film is exposed.
Patent KR-20030041469-A (KR)
Title: Method and Apparatus Driving For Scanning Of Plasma Display Panel
Inventor: CHOI JEONG PIL
IPC: G09G3/296
Filed: 2001-11-20
Abstract: PURPOSE: A scan driving method is provided to be capable of improving a driving efficiency by making an energy recovery circuit in a scan pulse driving circuit to which scan pulses are supplied so as to be overlapped. CONSTITUTION: The first data pulse corresponding to a video signal of '1' is applied to address electrode lines. At the same time when the first data pulse is applied, the second data pulse which corresponds to a video signal of '1' having a different width from the first data pulse is applied front and rear parts of the first data pulse. A scan pulse is supplied to scan electrode lines formed in a direction intersected with the address electrode lines, in synchronization with the first and second data pulses. As the scan pulse, a resonant pulse is supplied by an energy recovery device when the second data pulse is applied.
Patent KR-20030042621-A (KR)
Title: Washing machine with two pulsators
Inventor: JANG JAE WON
IPC: D06F17/10
Filed: 2001-11-23
Abstract: PURPOSE: A washing machine including two pulsators is provided to improve washing efficiency, and to reduce washing hours by dissolving detergent quickly and applying impact to the laundry with forming complex water stream in an inner tub. CONSTITUTION: A washing machine is composed of an outer tub(2); an inner tub(3) rotating in the outer tub; a center pulsator(50) rotated and installed in the lower part of the inner tub; and a side pulsator(60) rotated and placed between the center pulsator and the bottom of the inner tub. The outside of the side pulsator is extended to the inner wall of the inner tub, and the outside of the center pulsator is placed between the inner wall of the inner tub and the center of the inner tub. Washing efficiency is improved, and washing hours are reduced by forming water stream outside the inner tub and center stream in the inner tub with the side pulsator and the center pulsator.
Patent KR-20030044468-A (KR)
Title: Method for processing crude cloths of velboa
Inventor: KIM BYUNG GIL
IPC: D06C23/02
Filed: 2001-11-30
Abstract: PURPOSE: A finishing method of velboa fabric is characterized by treating with chemicals and bonding a metallic film. The finishing method of the velboa fabric is capable of increasing beauty of the fabric, forming various patterns and color and increasing marketability. CONSTITUTION: The finishing method of the velboa fabric comprises the steps of: mixing 5% of urea, 50% of an acryl emulsion polymerizing resin, 3% of a melamine resin, 10% of an ethylene vinyl acetate resin, 20% of PVA, 1% of a penetrant, 2% of a surfactant, 5% of an urethane resin and 2% of DOP to prepare a mixture; (101) treating the residual part except a pattern part with the mixture; (102) bonding the metallic film on the treated part; (103) heating the part bonded the metallic film to fix the metallic film firmly; and then (104) putting the velboa fabric into a raising device to raise the pattern part of the velboa fabric.
Patent KR-20030045246-A (KR)
Title: Specific function excution method and apparatus for portable terminal device
Inventor: KANG CHANG SU
IPC: H04B1/40
Filed: 2001-12-01
Abstract: PURPOSE: A method and a device for performing a specific function of a portable terminal are provided to turn on an LED(Light Emitting Diode) of the portable terminal in a dark place by using an additional Bluetooth terminal, so as to easily recognize location of the portable terminal. CONSTITUTION: If a portable terminal is turned on, a controller performs an initialization process and the portable terminal enters a standby mode. The controller checks a Bluetooth module to decide whether an LED-on signal is received from a Bluetooth terminal. If received, the controller turns on a keypad and an LED arranged for backlight of an LCD(Liquid Crystal Display) and checks whether a predetermined time passes. If so, the controller turns off the LED and returns to the standby mode. The steps are repeated whenever the LED-on signal is received from the Bluetooth terminal. If a telephone number of the other party is inputted through the keypad or read from a telephone directory stored in a memory and a call key is pressed, the controller connects a call with the other party.
Patent KR-20030046221-A (KR)
Inventor: KIM HAE CHEOL
IPC: H01L21/3063
Filed: 2001-12-05
Abstract: PURPOSE: Wet etch equipment including a final rinse bath is provided to perform a final rinse process and maintain high resistivity by forming a natural up-flow of a rinse solution in the final rinse process while including introduction holes in a wafer loading part and a peripheral part. CONSTITUTION: A corresponding semiconductor wafer is settled in the wafer loading part(301) to rinse the semiconductor wafer. A peripheral introduction holes(302) introduce the rinse solution for rinsing the edge of the wafer. A wafer loading introduction holes(303) rinse the wafer and are located in a portion under the wafer loading part. A final rinse bath(300) includes the wafer loading part, the introduction holes in the peripheral part and the introduction holes in the loading part. The upper portions of the introduction holes in the peripheral part and the loading part are tapered. One row of the introduction holes in the loading part and the peripheral part is disposed in a zigzag pattern capable of regarding an adjacent row of the introduction holes in the loading part and the peripheral part.
Patent KR-20030047458-A (KR)
Title: Composition of washable cleansing cosmetics
Inventor: LEE CHEON GU
IPC: A61Q19/10
Filed: 2001-12-10
Abstract: PURPOSE: A washable cleansing cosmetics is provided to make excellent cleansing effect with skin stability and, after usage, to be easily washed by water. CONSTITUTION: A transparent or semi-transparent washable cleansing cosmetics has an A content selected from glycerine fatty acid ester, poly glycerine fatty acid ester or a mixture thereof, a B content of oil, and a C content of water. The oil content includes silicon oil and ester oil in a ratio of 0.5-1.0 : 2. In a method of preparing the washable cleansing cosmetics, a water-based thickening agent, a moisturizing agent, a metallic ion blocking agent, and an anti-discoloration agent are sequentially put at the water part, and the mixture solution is heated at 75-80 deg.C. A liquid ester oil and a nonionic surface active agent are sequentially put at the oil part, and the mixture solution is heated at 75-80 deg.C.
Patent KR-20030048294-A (KR)
Inventor: AN JEONG MAN
Filed: 2001-12-12
Abstract: PURPOSE: A method for dynamically implementing query contents in a quiz game service server and a system for realizing the same are provided to induce voluntary participation of many persons by supplying free gifts differently according to quiz passing rates. CONSTITUTION: A user deposits a service charge designated in a service supply company. The user connects to a question page using a connection key received from a server(130) which supplies an E-mail service and main service. If the user creates and inputs questions to be used for a quiz game, the server(130) calculates the total number of questions and designates an inherent number to each question. The server(130) stores the questions in a question managing database sequentially. If the participators start the quiz game, the order of the question is changed using a random number generator and a query page is supplied to the participators. A rank of the participator is automatically decided in proportion to the number of correct answers, and free gifts are supplied for the participators differently according to the rank.
Patent KR-20020048886-A (KR)
Inventor: ARAKAWA MASAYA
IPC: C08L83/04
Filed: 2001-12-17
Abstract: PURPOSE: To provide an organopolysiloxane composition for templating having excellent releasability to various kinds of resins. CONSTITUTION: The organopolysiloxane composition for the templating comprises (A) 100 pts.wt. of an organopolysiloxane having an alkenyl group bonded to at least two silicon atoms in a molecule, (B) a straight-chain organopolysiloxane having hydrogen atoms bonded to silicon atoms at both ends, (C) an organohydrodiene polysiloxane having hydrogen atoms bonded to at least three silicon atoms in a molecule, (D) an effective amount of a hydrosilylating reaction catalyst, (E) < =50 pts.wt. of finely divided powder silica having a specific surface area of >=50 m¬2/g, and (F) 0-20 pts.wt. of a nonfunctional polyorganosiloxane, the sum of the hydrogen atoms bonded to the silicon atoms existing in the components (B) and (C) being 1-5 per one alkenyl group in the component (A), and the number of the hydrogen atoms bonded to the silicon atoms in the component (B) being 20-70 mole% to the sum of the hydrogen atoms bonded to the silicon atoms in the components (B) and (C).
Patent KR-20030055834-A (KR)
Title: Ball grid array type semiconductor chip package using leadframe and stack package
Inventor: LEE SEUNG JAE
IPC: H01L23/28
Filed: 2001-12-27
Abstract: PURPOSE: A ball grid array type semiconductor chip package and a stack package using a lead frame are provided to reduce the thickness of the stack package by adhering solder balls of the semiconductor chip package of an upper layer on an exposed lead of the semiconductor chip package of a lower layer. CONSTITUTION: A semiconductor chip package(10a,10b,10c) includes a semiconductor chip(11), a die pad(15), a lead(16), a bonding wire(17), a package body(18), and a plurality of solder balls(19). A plurality of bonding pads(12) are formed on the semiconductor chip. The semiconductor chip is mounted on the die pad. The lead is formed around the die pad. The bonding wire is used for connecting electrically the bonding pads to the lead. The package body is used for encapsulating the semiconductor chip, the bonding wire, and the lead. The solder balls are adhered on an exposed lower portion of the lead. A stack package(30) is formed by stacking vertically a plurality of the semiconductor chip packages. The solder balls of the semiconductor chip package of an upper layer are adhered on the exposed lead of the semiconductor chip package of a lower layer.
Patent KR-20010071920-A (KR)
Title: 뉴우런 성장 및 연장을 자극하는 화합물, 조성물 및 방법
IPC: C07D498/18
Filed: 1999-07-15
Abstract: 본 발명은 FK-506 결합 단백질 (FKBP)의 펩티딜-프롤릴 이소머라제 (로타마제) 효소 활성을 억제하는 화합물 및 이 화합물로 이루어지는 조성물을 제공한다.  FKBP 억제 화합물은 비시클릭[3.3.1], [4.3.1] 또는 폴리시클릭 아자아미드 핵을  갖는다.  이 화합물을 함유하는 제약 조성물은 신경세포에서 신경세포돌기 성장을 자극하고 신경 재생을 증강시키는 것을 돕는다.  이 조성물로 신경세포를 치료하는 방법은 질환 및 물리적 외상으로 인한 뉴우런 손상의 수복을 촉진시키는 데 유용하다.
Patent KR-20010072082-A (KR)
Title: 호르몬 대체요법을 위한 생물발생 에스트로겐술파메이트의 용도
IPC: A61K31/57
Filed: 1999-05-13
Abstract: 본 발명은 호르몬 대체요법 (HRT)을 위한 경구 불연속적 투여를 위한 생물발생 에스트로겐 술파메이트의 용도에 관한 것이다.  이런 불연속적 투여는 2 내지 40일 범위의 간격으로 수행된다.  본 발명은 또한 게스타겐을 바람직하게는 이식물의 형태 또는 자궁내 방출계 (IUD)의 형태로 연속적으로 추가 투여하는 것을 제공한다.  생물발생 에스트로겐 술파메이트로는 에스트론 술파메이트, 에스트라디올 술파메이트, 또는 아실쇄에 탄소 원자수가 7이하인 에스트론, 에스트라디올 또는 에스트리올의 N-아실 술파메이트가 사용된다.
Patent KR-20010079646-A (KR)
IPC: C08J5/24
Filed: 1999-07-28
Abstract: 점도 조정제를 함유하는 프리프레그 및 전기용 적층판의 제조에 유용한 열-경화가능한 열경화성 에폭시 수지 제형이 제공되고, 여기서 점도 조정제는 a) 모노비닐리덴 방향족 단량체와 이와 공중합되는 임의의 하나 이상의추가의 불포화 단량체의 치환되거나 치환되지 않은 중합체, b) 치환되거나 치환되지 않은 폴리페닐렌 옥사이드 또는 c) 옥사졸리돈 환-함유 화합물이다.
Patent KR-20010089375-A (KR)
IPC: H04N5/225
Filed: 2000-08-24
Abstract: 본 발명은 스케일가능 비트 스트림(O)을 얻기 위하여 신호(S)를 코딩하는 방법 및 장치를 제안한다. 신호(S)는 값들의 블록들을 포함한다. 각각의 블록은 비트 플레인들의 시퀀스로 표현(20)되고, 값들은 비트 플레인 유효도를 감소시키는 순서로 전달(21, 23)된다. 각각의 비트 플레인을 위하여, 주사 하고 전달하는 것(21, 23)은 블록의 코너(일반적으로 상부 좌측 코너)에서 시작하여 직사각형 주사 영역(R MAX /C MAX )에서 실행된다. 바람직하게, 주사하고 전달하는 것(21, 23)은 개별적으로 각각의 블록에서 실행된다. 생성된 비트 스트림(O)은 소망의 위치에서 비트 스트림(O)을 간단히 절두(3)하여 소망의 비트 속도로 양자화된다. 초기에, 모든 값들은 무유효(22)한 것으로 마크된다. 각각의 비트 플레인을 위하여, 비트는 각각의 유효값(SC) 즉, 이전의 비트 플레인에서 새롭게 유효해진 값(NSC)을 위해 전달(22, 23)된다. 유효값들(SC) 외에, 어떤 무유효한 값들이 현재 비트 플레인에서 새롭게 유효해지더라도 지시가 전달된다. 직사각형 주사 영역(R MAX /C MAX )의 치수들은 현재 비트 플레인에서 새롭게 유효해진 값들(NSC)을 위해 선택되어 전달된다. 이는 값이 새롭게 유효해진 값(NSC)과 각각의 새롭게 유효해진 값(NSC)을 위한 부호 비트를 갖더라도 주사 영역 내부에 각각의 이전의 무유효한 값을 위한 지시가 뒤따른다. 그 후, 다음 비트 플레인(20)이 진행된다. 값들은 변환 계수들일 수 있다.
Patent KR-20010089480-A (KR)
IPC: C01B33/18
Filed: 1999-11-19
Abstract: 본 발명은 
     (ⅰ) 입자를 하기 화학식 Ⅰ의 화합물에 접촉시키는 단계 및 
     (ⅱ) 상기 입자를 하기 화학식 Ⅱ의 화합물에 접촉시키는 단계 
     를 포함하는, 입자에 소수성을 부여하기 위한 입자 처리 방법에 관한 것이다. 
     <화학식 Ⅰ> 
     
       
     
     상기 식에서, 
     R 1 , R 2 및 R 3 중 하나 이상은 히드록실기 또는 가수분해 가능기이다. 
     <화학식 Ⅱ> 
     
       
     
     상기 식에서, 
     X는 음이온이고, 
     R 4 는 분지형 또는 비분지형의 2가기 -(C y H 2y )- (여기서 y는 1 내지 40의 정수), 또는 C 6 -C 40 방향족기이고, 
     t는 0 또는 1 이다.
Patent KR-20010080778-A (KR)
IPC: C22C38/04
Filed: 2000-10-13
Abstract: 강 중에, 
     C : 0.01 ∼ 0.20 wt%, Si : 1.0 wt% 이하, Mn : 1.5 초과 ∼ 3.0 wt%, P : 0.10 wt% 이하, S : 0.05 wt% 이하, Al : 0.10 wt% 이하, N : 0.010 wt% 이하 
     를 함유하고, 또한 
     Ti, Nb 및 V 에서 선택되는 어느 1 종 또는 2 종 이상을 합계로 0.010 ∼ 1.0 wt% 함유하고 잔부는 Fe 및 불가피적 불순물의 조성으로 이루어짐과 동시에, 페라이트상의 면적율이 50 % 이상, 페라이트상의 평균결정입경이 10 ㎛ 이하이며, 제 2 상으로 이루어지는 밴드형 조직의 두께가 Tb/T ≤0.005 (단, Tb : 밴드형 조직의 판두께방향 평균두께, T : 강판 판두께) 인 관계를 만족하는 금속조직을 갖는 것을 특징으로 하는 가공성 및 도금성이 우수한 고강도 용융아연도금 강판 및 그 제조방법. 
     연속 용융아연도금 라인 등의 설비를 이용하여 용융아연도금한 경우, 가공성이 양호하고 강도가 높으며, 양호한 도금을 얻을 있는 고강도 용융아연도금 강판의 제조방법을 제안한다.
Patent KR-20020002413-A (KR)
IPC: A47J27/13
Filed: 2000-04-03
Abstract: A pan for use with a well for receiving the pan is disclosed herein. The pan includes a bottom panel, a plurality of walls, and a ramp. The plurality of walls extend upwardly from the bottom panel and define a cavity. The plurality of walls also have an upper end which defines a top opening. The upper end has an extension away from the cavity which defines a rim. The ramp is proximate the rim and exterior to the cavity, whereby the pan rides up on the ramp when the pan is drawn up against the well.
Patent KR-20010112448-A (KR)
IPC: B24D7/06
Filed: 2000-04-20
Abstract: 본 발명에서는 백킹 (backing) (12)과 이 백킹 (12)의 표면에 접착된 적어도 하나의 3차원 연마 코팅 (16)을 포함하는 연마 용품 (10)을 제공한다.  연마 코팅 (16)은 다수의 다이아몬드 비드 연마 입자 (14) 및 연마 코팅의 약 40 내지 약 60 중량%를 구성하는 충전제가 내부에 분산되어 있는 경화된 바인더 전구체로부터 형성된 바인더 (15)를 포함한다.  연마 용품 (10)은 윤활제의 존재 하에 유리 또는 유리 세라믹 작업편을 연마하기 위해 특히 적합하다.
Patent KR-20020019909-A (KR)
Title: Impedance detector circuit, impedance detector and method of impedance detection
IPC: G01R27/26
Filed: 2001-03-07
Abstract: A second operational amplifier (11) of a core unit (1) shorts an inverting input terminal and an output terminal. A signal line (19) is connected to a non-inverting input terminal. A capacitive sensor (18) is connected to the signal line (19). A first operational amplifier (12) earths the non-inverting input terminal. One end of a first resistance (15) and one end of a second resistance (16) are respectively connected to the inverting input terminal. The other end of the first resistance (15) is connected to an alternate current voltage generator (14). The other end of the second resistance (16) is connected to the output terminal of the first operational amplifier (11). A signal output terminal (21) of the core unit (1) is connected to an inverting amplification device (2). An alternate output terminal (22) of the core unit (1) and an inverting output terminal (42) of the inverting amplification device (2) are connected to an addition device (3). The non-inverting input terminal of operational amplifiers (36) and (40). <IMAGE>
Patent KR-20030060408-A (KR)
Title: Apparatus for detecting temperature of a wafer in a rapid thermal process chamber
Inventor: JANG JEONG HUN
IPC: H01L21/324
Filed: 2002-01-09
Abstract: PURPOSE: A wafer temperature detector of an RTP(Rapid Thermal Processing) chamber is provided to measure the practical temperature of a wafer and compensate the temperature of the wafer by measuring the temperature of a wafer and the temperature of a black ring so as to improve uniformity of wafer temperature. CONSTITUTION: A wafer temperature detector of an RTP chamber includes a process chamber(100), a black ring(200), the first pyrometer(300), and the second pyrometer(400). The process chamber is used for performing an RTP operation. The black ring is installed around an outer circumference corresponding to the same height as a wafer loaded on the inside of the process chamber. The first pyrometer is used for measuring the temperature of the wafer. The second pyrometer is used for measuring the temperature of the black ring to compensate the temperature according to a surface material of the wafer.
Patent KR-20030060489-A (KR)
Title: Method and apparatus for driving laser diode for optical communications
Inventor: KIM NAM GUK
IPC: H04B10/00
Filed: 2002-01-09
Abstract: PURPOSE: A method of driving a laser diode for optical communication is provided to apply a minimal threshold current up to a final data bit from the first data bit regardless of data bit values, and to generate a driving current by interworking with data, thereby remarkably reducing power consumption. CONSTITUTION: A device delays burst mode data as the first predetermined time and the second predetermined time bigger than the first predetermined time. If a delayed result becomes the first logic level before the first predetermined time than a time transferred to the first logic level, and if the delayed result becomes the second logic level complementary with the first logic level, the device creates a bias control signal that becomes the second logic level(10). The device synthesizes the burst mode data delayed as the second predetermined time with the bias control signal, and creates a driving current having a level corresponding to a synthesized result(12).
Patent KR-20030061997-A (KR)
Title: A Returning Structure of Swivel Caster for Conveying Tool
Inventor: HUH NO GIL
IPC: B60B33/04
Filed: 2002-01-15
Abstract: PURPOSE: Structure for returning a rotating wheel of a transportation device is provided to improve the warehousing efficiency and to reduce the needs to repair tires by making a rotating wheel return to the original position via a spring and a cam follow bearing. CONSTITUTION: A rotating wheel(1) is connected with a connecting panel(2) via a fixing member(3). A body(4) embedding a bearing is attached to the upper portion of the connecting panel. A fixed plate(6) is attached to the upper portion of the body. Plural bearings(7) are installed in the upper and lower portions of the body. A return plate(5) is installed in the body by welding. The upper portion of the return plate has a slope face(5a). A cam follow bearing(8) is installed on the slope face. The upper portion of the cam follow bearing is elastically supported on a spring(9).