baber/WOPTO huggingface dataset:
Patent KR-20030044442-A (KR)
Title: Improved method for preparation of antimony-containing flame retardant
Inventor: HONG KI CHEOL
IPC: C01G30/00
Filed: 2001-11-30
Abstract: PURPOSE: A preparation method of antimony pentoxide(Sb2O5) sol and powder as fire retardants is provided. The resultant antimony pentoxide sol and powder have high concentration, non-precipitation, transparency and yellowing resistance. CONSTITUTION: The colloidal sol of antimony pentoxide is prepared by the following steps of: mixing 1pts.wt. of antimony trioxide(Sb2O3) having 3-4micrometer size and 99.7-99.9% high purity, 3-7pts.wt. of pure water, 0.005-0.03pts.wt. of ethanol amine or salts thereof and 0.005-0.03pts.wt. of KOH, and dispersing; heating the mixture to 55-75deg.C, adding H2O2 slowly for prevention of yellowing and applying ultrasonic waves for complete reaction; adding triethanol amine to adjust the pH of reactants between 6.5-7.5; and concentrating. Also, the antimony pentoxide(Sb2O5) powder is obtained by drying the prepared sol and grinding.
Patent KR-20030044640-A (KR)
Title: W-WLL Terminal for separtion type of RF-IF
Inventor: YOO JAE JIN
IPC: H04B1/26
Filed: 2001-11-30
Abstract: PURPOSE: An RF-IF(Radio Frequency-Intermediate Frequency) separation type W-WLL(Wideband-Wireless Local Loop) terminal is provided to configure the bandwidth of IFs identically, so as to share an IF module. CONSTITUTION: In an outdoor unit(100), a duplexer protects a receiver against a transmission output upon transmission and supplies echo signals to the receiver upon receiving, in order to use an antenna in both of the transmission and the receiving. An LNA(Low Noise Amplifier) receives the signals passing the duplexer for low noise amplification. An RF SAW(Surface Acoustic Wave) removes frequencies existing in different bands from the amplified signals. A downward frequency converter converts the signals whose other band frequencies are removed into IFs. And a multiplexer simultaneously transceives the converted signals as a plurality of individually independent signals by dividing one line or transmission line. In an indoor unit(200), a multiplexer simultaneously transceives the signals transmitted from the outdoor unit(100) as a plurality of individually independent signals by dividing one line or transmission line. A demodulator converts the signals received through the multiplexer into baseband signals. A baseband BPF(Band Pass Filter) filters the demodulated baseband signals. An A/D(Analog-to-Digital) converter converts the filtered signals into digital signals. A digital baseband processor delivers the digital signals to a connected DSP(Digital Signal Processor) modem, for interfacing with each unit. An analog converter converts CDMA(Code Division Multiple Access) digital information into baseband analog signals, if signals are transmitted from the each interfaced unit. A modulator modulates the converted analog signals. An IF gain control amplifier varies the level of the modulated signals. And a BPF(Band Pass Filter) filters the varied signals.
Patent KR-20030009031-A (KR)
Title: Method and apparatus for high-speed read operation in semiconductor memory
Inventor: MATSUZAKI YASUROU
IPC: G11C11/401
Filed: 2001-12-18
Abstract: PURPOSE: To improve a read-out rate of data by operating a semiconductor memory at high speed. CONSTITUTION: Data is stored in a plurality of first memory blocks, and reproduction data for reproducing this data is stored in a second memory block. At the time of read-out operation, the first operation in which data is read out directly from the selected first memory block or the second operation in which data is reproduced from data stored in non-selection first memory block and reproduction data stored in the second memory block is executed. Thereby, during read-out operation of the first memory block, further, read-out operation of the first memory block can be performed. Therefore, request for read-out operation from the outside can be received in a shorter period than a read-out cycle. That is, a semiconductor memory can be operated at high speed, and a read-out rate of data can be improved.
Patent KR-20030053100-A (KR)
Inventor: LEE DONG EUN
IPC: F27B9/00
Filed: 2001-12-22
Abstract: PURPOSE: A walking beam type furnace is provided to prevent air from passing through a perforation hole formed in a bottom portion of a base by shielding the perforation hole using a shielding device. CONSTITUTION: A walking beam type furnace includes a body(1) having a base(10) formed with a plurality of perforation holes(12). A fixing bar(16) is provided on the base(10) of the body(1). A fixing beam(18) is installed at an upper end of the fixing bar(16) so as to support an object. A walking bar(20) is movably inserted into the perforation holes(12). A walking beam(22) making contact with the object is provided at an upper end of the walking bar(20). A conveying device(24) is coupled to a lower end of the walking bar(20). A shielding device(26) is provided to shield perforation holes(12) formed in the base(10) of the body(1).
Patent KR-20030054854-A (KR)
Title: Method for Fabricating of Semiconductor Device
Inventor: CHA HAN SEOP
IPC: H01L27/092
Filed: 2001-12-26
Abstract: PURPOSE: A method for manufacturing a semiconductor device is provided to be capable of preventing the channeling of a gate electrode. CONSTITUTION: A gate oxide layer(22) and a polysilicon layer(23) are sequentially formed on a semiconductor substrate(21). The surface of the polysilicon layer(23) is densified by implanting nitrogen ions into the polysilicon layer(23) and annealing. Then, phosphorous ions are implanted into the polysilicon layer(23). At the time, the annealing is performed by using furnace or RTP(Rapid Thermal Processing) apparatus.
Patent KR-20030057210-A (KR)
Title: Mount tool of lead-on-chip die bonding equipment for manufacturing semiconductor packages, and zig for setting the tool
Inventor: SON JANG HUN
IPC: H01L21/50
Filed: 2001-12-28
Abstract: PURPOSE: A mount tool of a lead on chip die bonding equipment for manufacturing a semiconductor package and a jig for setting the same are provided to be capable of being used for various devices having different sizes without an additional replacing process by improving the structure of the mount tool. CONSTITUTION: A mount tool is provided with a body(22) having a pair of rails(36,38) and a plurality of head parts having a pressing surface for attaching lead frames on a device. Preferably, the head part includes a plurality of fixing block(24,30) capable of sliding along the rails, a plurality of heads(26,32) formed on the upper portion of each fixing block for pressing the frame, and a plurality of fixing screws(28,34) inserted a through hole of each fixing block for fixing the fixing blocks.
Patent KR-20010072723-A (KR)
Title: 반도체 디바이스 제조 방법
IPC: H01L21/304
Filed: 2000-06-08
Abstract: 본 발명은 전자 디바이스를 제조하는 방법에 관한 것으로, 특히, 표면(2)에 제거될 재료(3)가 구비되는 웨이퍼(1)가 연속하는 뱃치들(batches)로 분할되면서 동시에, 용매에 활성 성분이 용해되어 있는 용액을 포함하는 조(bath:4)에서 습식 처리되는 방법을 수행하는 반도체 디바이스 및 장치에 관한것이다.  연속하는 웨이퍼(1) 뱃치들은 연속하는 뱃치들을 습식 처리하는 제 1 시간 간격에서 용액(5)에 침지되며, 제 1 시간 간격은 재료(3)가 웨이퍼(1)의 표면(2)으로 부터 제거되는 처리 주기(processing period) -이로 인해 이온 성분을 형성함 - 및 처리 주기 말기에 조(4)로부터 웨이퍼(1)를 제거하는 대기 주기(waiting period)로 각각 구성된다.  연속하는 뱃치들의 습식 처리 동안, 용액(5)의 도전율(conductivity)이 모니터링되며, 모니터링된 도전율은 활성 성분 또는 용매 또는 둘다를 조(4)내의 용액(5)에 추가함으로써 연속하는 뱃치들의 습식 처리 동안의 제 2 시간 간격에서 대략적으로 원하는 도전율에 이르게된다.  용액내에 활성 성분이 용해되어 있는 용액에서의 연속하는 웨이퍼(1) 뱃치들의 습식 처리의 처리 안정성을 개선하고 용액(5)을 포함하는 조(4)의 수명을 연장하기 위해, 원하는 도전율은 연속하는 뱃치들을 습식 처리하는 제 3 시간 간격들에서 소정의 값으로 변경되어야 하고, 이 값은 가장 최근에 완성된 제 3 시간 간격들 중 하나 동안 제거된 재료의 양에 기초하여 제 3 시간 간격들 중 각각의 하나에서 결정된다.
Patent KR-20010073033-A (KR)
Title: 인슐리노트로픽 펩티드의 투여 방법
IPC: A61P3/08
Filed: 1999-08-24
Abstract: 본원 발명은 흡입에 의한 글루카곤 유사 펩티드-1 분자 투여 방법, 흡입에 의한 글루카곤 유사 펩티드-1 분자에 의한 당뇨병 치료 방법, 및 흡입에 의한 글루카곤 유사 펩티드-1 분자 투여에 의한 과혈당증 치료 방법에 관한 것이다.
Patent KR-20010074891-A (KR)
IPC: G06F13/00
Filed: 1999-08-24
Abstract: A method and system for defining and discovering proxy functionality on a distributed audio video network. The present invention operates within a network of consumer electronic media devices (e.g., television, set-top-box, video cassette recorder, compact disc device, personal computer system, etc.) that are coupled together using the IEEE 1394 serial communication standard. Specifically, the present invention enables a consumer electronic media device having increased functionality to act as a proxy device for other consumer electronic media devices. As such, the proxy device is able to provide a wide variety of advantageous proxy services for other consumer electronic media devices thereby increasing their original capabilities. For instance, the proxy device can act as a translator between two devices thereby enabling them to communicate. Additionally, the proxy device can enable Home Audio Video Interoperability (HAVi) devices to have greater control over non-HAVi devices. Moreover, the proxy device can extend the existing functionality of devices as well as provide new functionality for them. Furthermore, the proxy device can act as a command arbitrator for particular devices. Also, the proxy device can act as a proxy for all or a portion of the functionality of a device. It is appreciated that these are only examples of the possible advantageous proxy services that the proxy device can provide for other devices in accordance with the present invention.
Patent KR-20010073134-A (KR)
IPC: G01R31/08
Filed: 1999-09-07
Abstract: Apparatus for use in measuring and/or monitoring the relative position or displacement of two elements, includes a pair of elongate electrical conductors (10, 11) adapted to be associated with the respective elements, and means (12, 13, 18) for disposing the conductors at a mutual separation such that a detectable quantum tunnelling current may be generated between them on application of an electrical potential difference between the conductors.
Patent KR-20010088871-A (KR)
IPC: C01D7/18
Filed: 1999-09-30
Abstract: 황산암모늄과 미합중국 약전 등급의 탄산수소나트륨을 합성하는 공정. 본 공정은, 공정 염수를 황산나트륨으로 포화시킴으로써 전구체 황산나트륨 및 탄산수소나트륨을 고품위 황산암모늄 비료 및 제약용 등급의 탄산수소나트륨으로 효율적인 에너지로써 변환시키는 것을 가능하게 한다. 이 단계는 본 기술분야에서 이전에는 인식되지 않았던 것으로서, 이 결과 공학, 에너지 및 생성물 품질의 관점에서 볼 때 종래기술의 방법들은 쓸모없게 된다. 본 공정은 황산나트륨을 공정 염수 혹은 용액에 재도입하여, 종래기술에 내재된 에너지 비용 및 분리 문제 없이, 변환공정을 영속화시킨다.
Patent KR-20010093124-A (KR)
Title: Process for preparing acylphosphines and derivatives
IPC: C07F9/53
Filed: 1999-11-20
Abstract: A description is given of processes for the preparation of mono- and bisacylphosphines and of mono- and bisacylphosphine oxides and mono- and bisacylphosphine sulfides, which comprises first reacting organic P-monohalogenophosphines or P,P-dihalogenophosphines, or mixtures thereof, with an alkali metal or magnesium in combination with lithium, where appropriate in the presence of a catalyst, and then carrying out the reaction with acid halides and, in the case of the process for the preparation of oxides, carrying out an oxidation step and, in the case of the preparation of sulfides, reacting the phosphines so obtained with sulfur. It is characteristic, inter alia, that the processes are carried out without isolation of the intermediates.
Patent KR-20010101272-A (KR)
Title: 다이 립 빌드업이 감소된 중합체 조성물 압출 방법
Filed: 1999-12-16
Abstract: 본 발명은 다이 립 빌드업(die lip buildup) 및 그의 유해한 영향을 감소시키는 용융된 중합체의 다이 압출 방법에 관한 것이다.  하나의 실시양태로 혼합된 중합체 펠렛 및 충전제 농축 펠렛의 직접 압출은 예비배합 단계를 피하고, 중합체 및 충전제 입자가 다이의 출구 부분에 부착하는 경향을 줄인다.  다른 실시양태로, 감소된 다이 립 반경 및 더 낮은 용융 가공 온도는 얻어진 이점을 더 향상시킨다.  공압출된 다층 필름 실시양태에서, 스킨층(18,20)에서 충전제 및 블로킹방지 첨가제를 제거하는 것은 얻어진 다이 립 빌드업 감소의 수준을 더한다.  하나의 배열에서 과도한 다이 립 빌드업 없는 연속 작동 시간은 4 내지 6시간의 수준으로부터, 예를 들어 20시간을 초과하게 증가하였다.  감소된 제품 결함 수준도 또한 얻어졌다.
Patent KR-20020000798-A (KR)
IPC: H01M50/497
Filed: 2001-02-15
Abstract: 본 발명은, 하나 이상의 이온 그룹 또는 이온화 가능한 그룹을 갖는 하나 이상의 아크릴 수지 또는 비닐 수지 및 하나 이상의 열가소성 불소 중합체를 함유하는 중합체 혼합물에 관한 것이다.  바람직하게는, 당해 중합체 혼합물은 배터리 및 연료 전지 등에 유용한 막의 형성시의 용도를 포함하는 다양한 용도에서 유용한 둘 이상의 중합체의 균질 혼합물이다.  본 발명은 또한 당해 중합체 혼합물의 제조방법에 관한 것이다.
Patent KR-20020003381-A (KR)
Title: 자원의 할당을 최적화하는 시스템 및 방법
IPC: G06Q10/06
Filed: 2000-04-07
Abstract: 자원 할당을 최적화하는 시스템(8)은 상기 자원에 대한 요청 및 복수개의 입찰을 갖는 자원 할당 데이터로 이루어지는 최적화기 파일(14)을 포함하는데, 각 입찰은 상기 자원에 대한 최소의 단위 가격을 포함한다. 상기 파일(14)에 결합되는 최적화기 엔진(16)은 상기 데이터를 수신하여 그들의 단위 가격에 따라 최소의 일부 입찰에 대한 우선순위를 발생한다. 상기 엔진(16)은 상기 데이터에 따라 정수 프로그램을 발생하여 그 정수 프로그램에 관한 우선순위를 전달한다. 상기 엔진(16)에 결합된 문제풀이기(18)는 상기 우선순위 및 정수 프로그램을 수신한다. 상기 문제풀이기(18)는 상기 우선순위를 이용하는 정수 프로그램으로 솔루션을 발생하는데, 그 솔루션은 상기 요청 및 입찰에 제공되는 자원 할당을 최적화한다.
Patent KR-20020011993-A (KR)
IPC: A61K9/127
Filed: 2000-05-30
Abstract: 본 발명은 고농도의 당 수용액 혹은 당 슬러리에, 지질을 포함하는 리포좀 원료를 주입함으로써 얻어지는 미소한 리포좀 및 그 제조 방법에 관한 것이다. 
     본 발명에 의하면, 유기 용매의 사용량을 소량으로 억제하고, 또 심한 물리적 처리를 수행하지 않고서도, 용이하고 또 효율적으로 미소한 리포좀을 제조할 수 있다.
Patent KR-20030061657-A (KR)
Title: Catalyst for ethylene preparation and method for preparing ethylene using the same
Inventor: BYUN YEONG CHANG
IPC: C08F4/60
Filed: 2002-01-15
Abstract: PURPOSE: A catalyst for producing ethylene is provided to increase the ethane conversion and ethylene selectivity and to lower the catalyst inactivation, thereby obtaining ethylene at a high yield. CONSTITUTION: The catalyst for producing ethylene is a metal supported catalyst having the formula of Pt-M/S, wherein M is one or more metal catalyst components selected from the group consisting of Sn, Cu, Ce, Mg and Sr, S is one or more carriers selected from the group consisting of alpha-Al2O3, SiO2, MgO and CeO2. The method for producing ethylene comprises the step of contacting a mixed gas containing ethane, oxygen and hydrogen with the metal supported catalyst in a vapor phase to perform the oxidative dehydrogenation.
Patent KR-20030063956-A (KR)
Title: Bacillus cereus Probio-32 strain for controlling parasitic nematode and method of treating nematode infections in plants
Inventor: CHO JIN UNG
IPC: C12N1/20
Filed: 2002-01-24
Abstract: PURPOSE: A Bacillus cereus Probio-32 strain for controlling parasitic nematode and a method for treating nematode infection in plants are provided, thereby biologically treating nematode infection in plants. CONSTITUTION: A Bacillus cereus Probio-32 strain (KCCM-10297) for controlling plant parasitic nematode is provided. A composition for the prevention or treatment of plant parasitic nematode contains the Bacillus cereus Probio-32 strain (KCCM-10297) and agrichemically acceptable resins, wherein the composition optionally contains Lactobacillus sp. Probio-23 (KCCM-10327), Bacillus sp. Probio-33 (KCCM-10298), Bacillus sp. Probio-35 (KCCM-10300), Enterococcus sp. Probio-36 (KCCM-10302) and a mixture thereof. A method for the treating nematode infection in plants comprises treating plants, soil or seeds with the Bacillus cereus Probio-32 strain (KCCM-10297) cultured medium or the composition containing Bacillus cereus Probio-32 strain (KCCM-10297), wherein the nematode is root-knot nematode.
Patent KR-20030039975-A (KR)
Inventor: MATSUHASHI AKIRA
IPC: F16F9/36
Filed: 2002-01-30
Abstract: PURPOSE: To strengthen shock absorbing force by providing a shock absorber using air in an airtight state. CONSTITUTION: In the shock absorber comprised of a cylinder 41, a piston bearing 43, a piston 46, in which the pointed end portion is pushed to a moving body W, moving the inside of the cylinder having a piston shaft 44 sliding the piston bearing 43, and a hole 50a leading to the outside through the inside of the cylinder in a cylinder wall 41a located in the opposite side of the piston bearing 43, a hole passing through among a piston bearing side, the piston bearing, and the opposite side of the piston bearing is arranged in the piston 46, and a first valve and second valve opening and closing in proportion to movement of the piston 46 in the cylinder is also arranged in the hole. When the piston 46 compresses air in the cylinder, an air hole in the piston bearing side is disused, and the inside of the cylinder is set in a vacuum state. Further, an air reservoir 61 storing air passing through the hole 50a is provided when the piston 46 compresses air in the cylinder, and shock absorbing force is strengthened so as to keep air in the shock absorber in an airtight state. Eventually, the shock absorber becomes dust-proof and waterproof structure because an airtight state is therein provided, and the shock absorber can be used in a clean room.
Patent KR-20030068930-A (KR)
Inventor: JI SEON GU
IPC: F25D17/08
Filed: 2002-02-19
Abstract: PURPOSE: A refrigerator is provided to allow chilled air to smoothly flow from a freezer compartment to a refrigerator compartment by minimizing pressure loss due to a damper. CONSTITUTION: A damper unit(30) includes a boxy case(31) mounted on an inner upper side of a refrigerator compartment side chilled air channel(20) neighboring an outlet of a connecting channel(24), and having an upper end and a lower end opened for flowing of chilled air; a platy damper(32) having one side joined to an upper part of the case to rotate so as to open and close the outlet of the connecting channel; and a step motor(34) joined to a rotary axis(33) of the damper to rotate the damper in normal direction and reverse direction so as to open and close the outlet of the connecting channel, and laid on an upper part of the chilled air channel on an outside of the case. The step motor rotates the damper in normal direction and reverse direction to control opening degree of the outlet of the connecting channel so as to control temperature in a refrigerator compartment.
Patent KR-20030069296-A (KR)
Title: apparatus and method for recovery of reactive power in plasma display panel apparatus
Inventor: KANG CHUN SEONG
IPC: G09G3/28
Filed: 2002-02-19
Abstract: PURPOSE: An apparatus and a method for collecting reactive power of a plasma display panel are provided to reduce the power consumption by diminishing the number of elements. CONSTITUTION: An apparatus for collecting reactive power of a plasma display panel includes a power supply source(Vcc), the first discharge electrode, and the second discharge electrode. The apparatus for collecting reactive power of the plasma display panel further includes a panel capacitor(9), a plurality of switching portions(1a,1b,3a,3b), an inductor(7), and a control portion. The panel capacitor(9) is connected to the first and the second discharge electrodes to supply a charge voltage to one of the first and the second discharge electrodes. The switching portions(1a,1b,3a,3b) disconnects or connects the first and the second discharge electrodes from or to the power supply source(Vcc). The inductor is inserted between one of the first and the second discharge electrodes and the panel capacitor(9). The control portion controls the switching portions(1a,1b,3a,3b).
Patent KR-20030070302-A (KR)
Title: Home appliance network system
Inventor: HAN GYEONG HAE
IPC: G06F15/16
Filed: 2002-02-23
Abstract: PURPOSE: A home appliance network system is provided to enable the network and a home appliance transmitting/receiving the data according to a different communication standard to smoothly communicate the data with each other, and to control the home appliance from the outside even if an IP(Internet Protocol) address given to the home appliance is changed. CONSTITUTION: The first communication standard home appliance(H1) transmits/receives the data with the network according to the first communication standard. The second communication standard home appliance(H2) transmits/receives the data with the network according to the second communication standard. An appliance server(10) enables the first and the second communication standard appliance to transmit/receive the data with each other by converting the transmitting/receiving data of both appliances(H1,H2) according to the first and the second communication standard, and transmits the information for the IP address given to the home appliances(H1,H2) to the network outside of the home network.
Patent KR-20030073465-A (KR)
Title: Method for employing social contribution system using insurance service
Inventor: BAEK CHUL JONG
IPC: G06Q50/22
Filed: 2002-03-11
Abstract: PURPOSE: A method for operating a social contribution system using an insurance service is provided to help a welfare administration by creating a contribution of an individual insurance as a welfare fund, and to set a contribution culture by supplying a tax benefit for a contribution related group using a government subsidy. CONSTITUTION: If a social welfare group registers to an insurance company(1), a contributor company pays a contribution as an insurance bill form(2). If the contributor died, the contribution is transmitted to a designated social welfare group(3). A card is issued to the contributor, and the contributor uses the card. The details of the card use are transmitted to a card company. The card company transmits the card use details and mileage details(7). The insurance company supplies a benefit in accordance with a mileage for the contributor(8). The insurance company returns a profit generated through the contribution to the social welfare group(9), publicizes the contribution culture to other member store and other card company, and executes a cooperation service. The insurance company transmits contribution details to the government(15). The government supplies a tax benefit to the contributor and a contribution related group(16-20).
Patent KR-20030075775-A (KR)
Title: Optical boiler system
Inventor: CHUNG EUN SU
IPC: F24J3/00
Filed: 2002-03-20
Abstract: PURPOSE: A boiler is provided to solve the air pollution, to be compacted and to increase the operating efficiency by using laser beams and solar energy. CONSTITUTION: A boiler(10) contains a case(11), a heat exchanging portion(20), a heating device(40) and an auxiliary heating device(50). The heat exchanging portion exchanges heat between energy from laser beams and heat exchanging media. The heating device irradiates the laser beams to the heat exchanging portion. The auxiliary heating device preheats the heat exchanging media to be passed through the heat exchanging portions. Thereby, the air pollution is prevented, the heating efficiency of the heat exchanging media is increased and the energy is saved.
Patent KR-20030075778-A (KR)
Title: Mold chase for semiconductor package and method for use the same
Inventor: LEE BONG HUI
IPC: H01L21/56
Filed: 2002-03-20
Abstract: PURPOSE: A mold case for a semiconductor package and a method for using the same are provided to be capable of improving the reliability of the semiconductor package by preventing the mold flash phenomenon generated when carrying out a molding process. CONSTITUTION: A mold case for a semiconductor package is provided with an upper and lower frame(35,36) having a cavity at the inside for encapsulating at least one lead frame electrically connected with an electrode of a semiconductor chip, and a plurality of posts(29) installed and spaced apart from each other at the inner surface of the upper frame. Preferably, the posts are located along the sawing line of the semiconductor package completed with an encapsulation process.
Patent KR-20020077084-A (KR)
Inventor: GIUSEPPE BELLANDI
IPC: B66C1/42
Filed: 2002-03-25
Abstract: PURPOSE: A fluid power gripper is provided to easily manufacture and be a compact volume by directly installing bearing elements to a gripper housing. CONSTITUTION: A fluid power gripper(1) is composed of a shell-shaped integrally molded gripper housing(2) comprising a piston chamber(5) and a bearing chamber(6) installed as an extension of the piston chamber and more than two gripper jaw carriers(34a,34b) relatively moved between opened and closed positions inside a slot device in the bearing chamber on a bearing member fixed for the gripper housing. The unidirectional movement of the gripper jaw carriers is induced by the fluid power working of the piston moving inside the piston chamber. The gripper housing directly forms the slot device. Bearing elements(36) are directly hung on the housing.