baber/WOPTO huggingface dataset:
Patent KR-20020015374-A (KR)
Title: Deuterium lamp box and portable light source
IPC: G01J1/08
Filed: 2000-07-17
Abstract: In a deuterium lamp box 50 in accordance with the present invention, a wavelength of light different from that of a deuterium lamp 10 can be forwardly let out from a light exit opening 69. Namely, when the deuterium lamp 10 of a see-through type is lit, the light generated from the deuterium lamp 10 can be let out from the light exit opening 69. When a second lamp 85 is lit while the deuterium lamp 10 is turned off, the light generated from the second lamp 85 passes through the deuterium lamp 10 while in a state collected by a lens 84, and is let out from the light exit opening 69. When the deuterium lamp 10 and the second lamp 85 are lit at the same time, different wavelengths of light are let out from the light exit opening 69 while in a mixed state. Thus, three kinds of light can be made depending on how the lamps 10, 85 are lit, whereby this lamp box is considered to have a versatility much higher than that of a lamp box accommodating only one lamp. <IMAGE>
Patent KR-20020039663-A (KR)
IPC: G11B20/12
Filed: 2001-06-07
Abstract: 본 발명은, 저장매체 상의 사용가능한 저장공간을 암시적으로 분할하는 방법과, 사용자 데이터를 저장하는 저장매체와, 사용자 데이터를 저장매체 상에 저장하는 기록장치에 관한 것이다. ADR용 자기 테이프 상의 UDF 볼륨과 같은 볼륨의 장착/해제 시간을 줄이고, 판독중의 전체적인 탐색 시간을 줄이기 위해, 본 발명에 따라 다음 사항이 제한된다: a) 매체에 저장하기 위한 가용 저장공간이 디렉토리 영역과 데이터 영역으로 분할되고, b) 메타데이터가 디렉토리 영역에 저장되며, c) 복수의 데이터 서브영역으로 암시적으로 분할된 데이터 영역에 사용자 데이터가 저장되고, d) 데이터 서브영역에 저장된 사용자 데이터에 대한 파일 설정 데이터가 이 데이터 서브영역에 할당되는 대응하는 디렉토리 서브영역에 저장되며, e) 데이터 서브영역들의 경계선과 크기가 변할 수 있다.
Patent KR-20020059695-A (KR)
IPC: G11B27/034
Filed: 2001-09-07
Abstract: 본 발명에 따른 광디스크의 기록 제어 방법, 드라이브 장치 및 기록 시스템은, 도 1에 나타내는 바와 같이, 광디스크의 드라이브 장치(1)에 있어서, 호스트 컴퓨터(2)부터 송신되는 데이터를 디스크(10)의 트랙(52)에 한창 기록하고 있을 때에, 호스트 컴퓨터(2)로부터의 데이터 전송이 도중에서 끊겼을 때, 트랙(52)으로의 기록을 중지하여 리드 아웃 영역(53)의 기록 처리로 전환하고, 리드 아웃 영역(53)의 기록 처리가 종료된 후에, 제 1 트랙으로부터 최종 트랙까지의 트랙 정보(TOC 데이터, PMA 데이터)를 실제로 디스크(10)에 기록된 트랙 데이터에 맞추어 변경해서, 해당 변경한 트랙 정보를 리드 인 영역(51)과 PMA(50)에 기록하도록 한 것이다. 
     이러한 구성의 광디스크의 기록 제어 방법, 드라이브 장치 및 기록 시스템에서는, 광디스크의 트랙에 데이터를 한창 기록하고 있을 때에 에러가 발생하여 기록 처리를 중단한 경우에도, 재생 가능한 광디스크를 작성하는 것이 가능해진다.
Patent KR-20020073170-A (KR)
Title: Panel Element
IPC: E04F15/02
Filed: 2001-01-12
Abstract: The panel element has a groove and a spring on opposite longitudinal sides, so that the groove of one element engages the spring of an adjacent element. The spring fits into the groove at an angle, so that one panel can be pivoted about the longitudinal edge of an adjacent panel. The spring and groove co-operate to secure the panel elements. The end faces of the panel elements have a groove (15b) and a tongue (16b), to connect the ends of adjacent panels. The end-side grooves and tongues can be connected by lowering one panel element onto a panel element that has already been installed, so that it cannot be lifted out.
Patent KR-20020084161-A (KR)
Title: 레리세트론 전달용 경피치료시스템
IPC: A61K47/38
Filed: 2001-03-17
Abstract: 본 발명은 지지층(backing layer), 지지층에 접속되는 적어도 한층으로 된, 감압(pressure-sensitive) 접착성의, 실리콘 감압 접착제(류)를 기재로 한 레리세트론 활성물질 저장소, 및 제거형 보호층을 포함하는 경피치료시스템(TTS) 형태의 레리세트론 약제에 관한 것이다.
Patent KR-20030007979-A (KR)
IPC: C11D3/37
Filed: 2001-06-21
Abstract: 세정 보조제를 포함하는 세정액-첨가된 직물 처리 조성물은 세탁 직물로부터 세탁 잔류물을 제거하기 위한 수성 세정욕 용액의 세정능을 증가시킨다.  물로 적당히 희석시킬 경우, 세정액-첨가된 직물 처리 조성물은 세정능이 1을 초과하는 세정욕 용액을 제공한다.  또한, 세정액-첨가된 직물 처리 조성물은 직물 상의 계면활성제 잔류물을 감소시키며, 약 0.05 내지 약 10%의 잔류물 감소제, 거품 억제제 및 잔여 보조 성분을 포함한다.  잔류물 감소제는 양이온성 잔류물 감소제, 쯔비터 이온성 잔류물 감소제 및 이들의 배합물로부터 선택된다.  또한, 직물 상의 계면활성제 잔류물을 감소시키는 방법 및 세탁 공정의 세정 단계에 사용되는 물의 양을 감소시키는 방법이 포함되어 있다.  물의 세정능을 향상시키기 위한 키트는 세정액-첨가된 직물 처리 조성물과 지침서를 포함한다.
Patent KR-20030036253-A (KR)
IPC: H01R13/639
Filed: 2001-06-29
Abstract: 다른 형태의 IC 카드를 연결하기 위한 카드 커넥터는 예비 장전 위치와 래칭 위치 사이에서 이동하는 IC 카드를 수용하기 위한 하우징을 포함한다.  슬라이더는 하우징 상에 이동 가능하게 장착되어 예비 로드와 래칭 위치 사이에서 이동하는 IC 카드와 함께 결합 가능하다.  래치 기구는 래칭 위치에 있는 슬라이더를 래칭시키기 위해 슬라이더와 하우징 사이에 작동 가능하게 결합된다.  슬라이더 상의 로크 부재는 로크 위치에서 IC 카드를 슬라이더에 로킹하기 위한 IC 카드 형태 중 하나의 로크부와 결합 가능하고, 로크 부재는 로크부를 갖지 않은 제2 형태의 IC 카드를 커넥터 내로 삽입될 수 있도록 비작동 위치로 이동 가능하다.
Patent KR-20040062304-A (KR)
Inventor: CHO EUN YEONG
IPC: C12N1/16
Filed: 2003-01-02
Abstract: PURPOSE: Yeast mutant strains deficient in the multiple yapsin genes and a method for producing recombinant proteins using the same are provided, thereby reducing activity of protease in the yeast mutant strains, so that a pure type of target recombinant protein can be isolated and purified from the yeast mutant strains. CONSTITUTION: The yeast mutant strains are deficient in one or more yapsin genes selected from YPS6 and YPS7, wherein one gene selected from YPS1, YPS2 and YPS3 are further deficient; the yeast is Saccharomyces cerevisiae; the yeast mutant strain is SLH23(YPS1Δ YPS2Δ YPS3Δ YPS6Δ)(KCTC 10384BP) which is deficient in the genes YPS1, YPS2, YPS3, and YPS6; and the yeast mutant strain is SLH28(YPS1Δ YPS2Δ YPS3Δ YPS6Δ YPS7Δ)(KCTC 10385BP) which is deficient in the genes YPS1, YPS2, YPS3, YPS6 and YPS7. The method for producing the recombinant proteins comprises the steps of: (1) transforming a microorganism deficient in the yapsin genes as a host cell with an expression vector containing the recombinant protein genes; (2) culturing transformed microorganism; and (3) purifying the recombinant protein secreted.
Patent KR-20040065367-A (KR)
Inventor: LEE HUI YEONG
IPC: A61B17/00
Filed: 2003-01-14
Abstract: PURPOSE: A vacuum massage apparatus and a suction unit are provided to allow an injected solution to quickly spread all over the organs of a patient by vacuum massaging the part of the body where the solution is injected. CONSTITUTION: A vacuum massage apparatus comprises a handle(1), a main body(3), a vacuum on/off valve(2) attached to the handle, a cover(9) attached to the main body, an ultrasonic vibrator, an ultrasonic oscillator, an ultrasonic on/off switch, and a suction unit(4). The suction unit includes a vacuum pump, two independent mode switches, two independent foot switches, two independent suction valves, and two independent vacuum control valves. The vacuum massage apparatus operates simultaneously with a suction lipectomy.
Patent KR-20040065120-A (KR)
Inventor: PARK HYEON GYU
IPC: B41J29/00
Filed: 2003-01-15
Abstract: PURPOSE: Structure for attaching an encoder of an ink jet printer is provided to prevent the degradation of printing quality due to uneven feeding of paper by maintaining firm combination of an encoder and a feed roller. CONSTITUTION: An ink jet printer includes a power transmitting member(100) installed coaxial with a feed roller and an encoder installed at one side of the power transmitting member and detecting the torque of the feed roller. Plural hooks(102) are formed at one side of the power transmitting member. An insertion hole(112) is formed in the encoder to be corresponding to the hooks. The encoder is attached to the power transmitting member by inserting the insertion hole with the hooks.
Patent KR-20030063173-A (KR)
Title: Hydrogenation of single ring aromatic diamines
Inventor: BURDENIUC JUAN JESUS
IPC: C07B61/00
Filed: 2003-01-17
Abstract: This invention relates to an improved process for the preparation of cyclohexylamines wherein an aromatic amine is contacted with hydrogen in the presence of a hydrogenation catalyst. The improvement resides in utilizing a hydrogenation catalyst comprised of rhodium metal, utilizing a dialkyl ether solvent, and effecting delay addition of the aromatic diamine to the reaction medium.
Patent KR-20040066380-A (KR)
Inventor: EOM IN SEOP
IPC: G11B7/1263
Filed: 2003-01-17
Abstract: PURPOSE: An optical pickup device where a half mirror having a flying point generation structure is adopted is provided to form a rear side of a half mirror having a cylinder surface so as to have a flying point generation structure, thereby realizing the optical pickup device without a sensor lens. CONSTITUTION: An LD(Laser Diode)(201) generates an optical beam. A half mirror(202) transmits or reflects the beam incident according to a polarized direction of the beam. A CL(Collimator Lens)(203) progresses the beam passing through the half mirror(202) in parallel. An objective lens(204) condenses the optical beam transmitted on the CL(203) into one point on a surface of an optical disk(205). A photo diode(206) detects the condensed optical beam into an electrical signal by compensating for astigmatism when the reflected optical beam is transmitted on the half mirror(202) via the objective lens(204) and the CL(203).
Patent KR-20040067703-A (KR)
Inventor: LEE HYEON JAE
IPC: H01L21/20
Filed: 2003-01-24
Abstract: PURPOSE: A method for fabricating a gallium nitride substrate is provided to reduce micro crack or bending occurring in a gallium nitride layer and fabricate a free standing gallium nitride substrate of a good quality by growing and separating a gallium nitride layer in a separate place like a growth chamber or a transfer chamber. CONSTITUTION: A gallium nitride buffer layer(41) is formed on a substrate(30) placed on a susceptor(36) in a growth chamber. Laser beam is irradiated to the lower direction of the susceptor to separate the gallium nitride buffer layer from the substrate. A gallium nitride layer is formed on the gallium nitride buffer layer separated from the substrate.
Patent KR-20040068726-A (KR)
Inventor: KIM SEONG JAE
IPC: F25D11/00
Filed: 2003-01-27
Abstract: PURPOSE: Hybrid electric home appliances are provided to use the electric home appliances conveniently and variously by integrally forming plural electric home appliances in a case, and to maintain easily by sharing the refrigerating cycle with a refrigerator, an ice making machine and a quick cooler. CONSTITUTION: A hybrid electric home appliance is formed by selectively and integrally installing two or more of a microwave oven(3), a refrigerator(4), an ice making machine(5) for generating ice, a quick cooler(6), and a cool and a hot water dispenser(7) purifying water and supplying by heating or cooling water in a cabinet(1) with a door(2). The refrigerator, the ice making machine and the quick cooler are operated by sharing the single refrigerating cycle. The refrigerator, the ice making machine and the quick cooler generates cold air, makes ice and cools quickly by sharing a compressor(10), a condenser(11), a decompression unit(12) and an evaporator.
Patent KR-20040069107-A (KR)
Inventor: CHO GI SEONG
IPC: G09F9/305
Filed: 2003-01-28
Abstract: PURPOSE: An advertisement apparatus using an optical fiber is provided to improve advertisement effect and also to reduce fabrication cost with a simple structure. CONSTITUTION: The advertisement apparatus includes a frame(10), and a transparent or semi-transparent advertisement board(20) which is installed in front of the frame and has a printed advertisement figure. A color converter(30) comprises a pair of rollers(31,31') installed in the frame, and a driving motor(32) driving one of the rollers, and a color belt(34) installed on each roller and having a number of color papers with different colors. A light source(40,40',40") is located in the color belt. And an optical fiber bundle(50,50',50") includes a number of optical fibers having a light incident part located on an optical axis on the color belt and a light output part attached to the advertisement figure on the advertisement board.
Patent KR-20040079276-A (KR)
Inventor: SHIN DONG FAN
IPC: A23L11/00
Filed: 2003-03-07
Abstract: PURPOSE: Provided is an apparatus for producing tofu permitting the introduction of water and beans as a raw material into a vessel part and a centrifugal discharge vessel without the separation of an operation part from the vessel part. Therefore, it avoids the occurrence of a part break due to frequent assembling and disassembling as well as the inconvenience of separating the operation part. CONSTITUTION: The apparatus for producing tofu comprises: a control part(113); an operation part(110) containing a motor(114) and a grinding cutter(116); a centrifugal discharge vessel(119) removably attached to the lower part of the operation part: and a heater rod(121) disposed at the lower part of a vessel part(130) and connected to the operation part on one end. The apparatus is characterized in that the operation part has an inlet passage(117) formed to be communicated with the centrifugal discharge vessel. A handle(120) is formed at the lower part of the centrifugal discharge vessel to cause easy detachment and attachment of the operation part.
Patent KR-20040080209-A (KR)
Inventor: SHIN JUN SEONG
IPC: B60R21/02
Filed: 2003-03-11
Abstract: PURPOSE: A breaking structure of interior fittings for a vehicle is provided to prevent the damage of the interior fittings in a manufacturing process by changing the structure and position of a breaking portion formed at a PCB. CONSTITUTION: In interior fittings including a PCB(10) and a rear housing(20), the PCB has a breaking portion(11). The rear housing supports the rear of the PCB. A partition(21) is formed at the rear housing. The breaking portion is supported by three support units(12) formed at the PCB. The partition includes an inner protrusion(22) for supporting the support units.
Patent KR-20040081971-A (KR)
Inventor: CHOI SI YEONG
IPC: H01L21/336
Filed: 2003-03-17
Abstract: PURPOSE: A gate pattern of a semiconductor device and a method for forming the same are provided to reduce RC delay while maintaining good electric properties of a polysilicon gate. CONSTITUTION: A semiconductor substrate(100) is prepared. A gate insulating layer(200) is formed on the substrate. A polysilicon pattern(300a) including a protrudent part(310) and a recess part is formed on the gate insulating layer. A metal film(400a) is filled in the recess part. A hard mask layer(500a) is formed on the polysilicon pattern. A gate pattern(600) is formed by selectively removing the hard mask layer, the metal film and the polysilicon pattern.
Patent KR-20040084148-A (KR)
Inventor: CHOI SANG BAE
IPC: F16K31/06
Filed: 2003-03-26
Abstract: PURPOSE: A gas valve is provided to open/close automatically with igniting or putting off, thereby simplifying structure and improving safety. CONSTITUTION: In a gas cutting valve to control gas flow, a valve cylinder(100) is provided with an inlet portion(102) and an outlet portion(104) for gas flow. An inlet fixed magnetic body(120) and an outlet fixed magnetic body are provided having sliding holes in the center. A plurality of air passages areas are provided to pass gas through the sliding hole. A moving magnetic body is installed to slide through the sliding hole. The moving magnetic body has a disk shape having smaller diameter than the fixed magnetic body.
Patent KR-20040086000-A (KR)
Inventor: KANG CHEOL
IPC: F02P11/00
Filed: 2003-04-02
Abstract: PURPOSE: An ignitor monitoring system is provided to recognize the operation state of an ignitor from a remote control room. CONSTITUTION: An ignitor monitoring system comprises a direct current sensor part(100) sensing the discharging state of an ignitor(IG); a high-speed signal amplifying part(200) amplifying and converting a signal of the direct current sensor; plural display units enabling easy discrimination to let a driver in a remote room ascertain the amplified signal of the high-speed amplifying part; and a signal output part(400) outputting a signal of 4¯20mA.
Patent KR-20040088862-A (KR)
Inventor: JUN HYE JEONG
IPC: H04B1/40
Filed: 2003-04-14
Abstract: PURPOSE: A method for expressing information in a mobile communication terminal and a device therefor are provided to display information generated from a mobile communication terminal on an outer image medium having a large screen in real time. CONSTITUTION: When a predetermined command is inputted(S31), the inputted command is inputted to an event generator to generate a corresponding event(S33). The generated event is inputted to an event controller such that the event controller can analyze the event. If the event is decided to execute contents(S35), the controller loads a memory to output the contents(S37). The controller decides whether the contents are set to be supplied to an outer image medium(S39). If so, the controller decides whether a keypad image is attached(S41). If not, the controller supplies the contents to the outer image medium through an outer interface(S43).
Patent KR-20040036520-A (KR)
Title: Rotary engine
Inventor: KIM DONG HYUN
IPC: F02B53/00
Filed: 2003-04-30
Abstract: PURPOSE: A rotary engine is provided to prevent leakage of oil or pressure, to allow exhaust gas to be completely discharged, and to get higher power. CONSTITUTION: A rotating body(6) is installed in a cylindrical housing(2) having an intake chamber(32) and an exhaust chamber(34) formed on an inner wall thereof and a spark plug(36) installed on an inlet of the exhaust chamber to be rotated together with a rotary shaft(4). The rotating body has an actuating chamber(8) having a piston(12) guided by a guiding rod. The actuating chamber has an intake and exhaust port(14) having an opening and closing valve(16) and an opening and closing plate(18) installed thereto for opening and closing operation. The opening and closing plate opens and closes the intake and exhaust port to partition the exhaust chamber on explosion so that explosion is generated on a rear side of the exhaust chamber. An inside of the actuating chamber is connected with an air supply tube(24) through an air supply channel(22) opened and closed by the opening and closing valve. A guider(26) is protrusively formed on the housing, and placed on a center of the rotating body to guide the piston.
Patent KR-20040096326-A (KR)
Inventor: BAE JEONG SUK
IPC: H04L29/06
Filed: 2003-05-09
Abstract: PURPOSE: A wireless communication terminal for supporting various wireless communication systems and a method therefor are provided to supply a mobile communication service regardless of physical layer methods of various wireless systems under the wireless connection environment. CONSTITUTION: A physical layer(100) includes a plurality of first system individuals corresponding to physical layer methods of various wireless systems. An adaptation layer(200) receives or transmits a primitive from or to the physical layer. The adaptation layer includes a plurality of second system individuals and routing individuals for performing a distribution function to the second system individuals. A data link control layer(300) receives or transmits the primitive from or to the adaptation layer.
Patent KR-20040097816-A (KR)
Inventor: JANG SUN JAE
IPC: F04C18/02
Filed: 2003-05-13
Abstract: PURPOSE: An upper load support device of a crankshaft of a scroll compressor is provided to secure a structure stable for increase of the upper load and to prevent additional rise of cost, in increasing the volume of an upper frame. CONSTITUTION: An upper load support device of a crankshaft of a scroll compressor is formed in a double structure of different members where an aluminum boss(32) and a steel plate(31) having support rods(34) to be welded to a main wall of a hermetic vessel are joined. A vent hole is formed in each support rod of the steel plate of a lower frame(30) supporting the load of the upper part for smooth operation of a crankshaft at an upper load support point of the aluminum boss. The vent holes are formed in the same number as the number of welding parts(36) of support rods of the steel plate.
Patent KR-20040105464-A (KR)
Inventor: KIM DONG SEONG
IPC: C08F279/04
Filed: 2003-06-09
Abstract: PURPOSE: Provided is an acrylate-styrene-acrylonitrile based thermoplastic resin composition, which has excellent basic physical properties, weather resistance and appearance characteristics including scratch resistance, color and gloss. CONSTITUTION: The thermoplastic resin composition comprises: (1) 5-30 parts by weight of a small-diameter graft alkyl acrylate-styrene-acrylonitrile; (2) 10-40 parts by weight of a large-diameter alkyl acrylate-styrene-acrylonitrile; (3) 10-70 parts by weight of an aromatic vinyl compound-vinyl cyanide copolymer; (4) 10-30 parts by weight of a butadiene-styrene-methyl methacrylate resin; and (5) 1-10 parts by weight of an alkyl acrylate copolymer based on 100 parts by weight of (1)+(2)+(3)+(4).
Patent KR-20040086060-A (KR)
Inventor: PARK JONG HO
IPC: H04W12/06
Filed: 2003-06-10
Abstract: PURPOSE: An identifying system through a personal terminal accessible to a wireless Internet communication network and a system thereof are provided to transmit requested data in real time when an image on an identification or a license is connected to a portable terminal through a wireless Internet network. CONSTITUTION: A system receives a certain certificate image stored in a DB. A mobile communication terminal accesses a server for supplying a transmission service of the certificate image through a wireless communication network. The system selects a kind of certificate to be displayed through a display window of the terminal through the terminal connected to the server. The system requests a public institute for managing a requested certificate to transmit an image of the corresponding certificate, and waits for a response. The system transmits data in accordance with the response to the image to the terminal.
Patent KR-20040108148-A (KR)
Inventor: KIM GYEONG OK
IPC: A61K31/16
Filed: 2003-06-16
Abstract: PURPOSE: Provided is a composition comprising cathepsin B inhibitor as an active ingredient. The composition has excellent therapeutic effect on a burn and is thus used as therapeutics for a burn. CONSTITUTION: The therapeutic composition for a burn is characterized by containing a cathepsin B inhibitor as an active ingredient. The cathepsin B inhibitor is represented by the formula(I), wherein R1 is a guanidino or amino group.
Patent KR-20040108446-A (KR)
Inventor: JUNG HYEON DAM
IPC: H01L21/31
Filed: 2003-06-17
Abstract: PURPOSE: A pore generated composition for a porous semiconductor insulating layer is provided to obtain a low dielectric material having fine-porosities with a size of 50 angstrom or less by constituting properly predetermined materials. CONSTITUTION: A pore generated composition for a porous semiconductor insulating layer contains a silyl porogen, a matrix precursor, and a solvent. The matrix precursor is thermally stable. The matrix precursor is organic or inorganic. The solvent is capable of dissolving the silyl porogen and the matrix precursor.
Patent KR-20050001039-A (KR)
Inventor: JUNG JAE GON
IPC: G05D29/00
Filed: 2003-06-26
Abstract: PURPOSE: A safety displaying apparatus using a microprocessor is provided to prevent process delay and facility damage. CONSTITUTION: A local device(20) is operated by receiving electricity. An operation unit comprises a switch controlling the supply of power to the local apparatus. A micom(31) has an input port(32) connected to the operation unit and outputs a control signal corresponding to an operation signal inputted through the input port. A display unit(34) receives the control signal from the micom and displays it to a worker. And a microprocessor(30) has an output port(33) connected to the local device in order to transmit the control signal from the micom to the local device.
Patent KR-20040004083-A (KR)
Inventor: ROHLFING RALPH
IPC: H01R13/707
Filed: 2003-06-30
Abstract: PURPOSE: An apparatus having an enclosure, at least one circuit breaker and at least one plug receptacle is provided to meet the requirements with regard to electrical and mechanical safety as well as operational safety to a particularly high degree. CONSTITUTION: The interlocking is designed such that a circuit breaker is only switched on when a plug receptacle(21) is occupied. At the same time, it is only possible to remove a plug from the plug receptacle when the circuit breaker is switched off. The circuit breaker is actuated by a push element(72). The push element is acted on by a lever arm of an actuating lever(67). The actuating lever is pivoted, about an actuating axis(68), at least between a switch-on position and a switch-off position. The actuating lever has means for blocking the occupied plug receptacle in the switch-on position. The plug receptacle is assigned obstructing means, which block the movement of the push element when the plug receptacle is not occupied and is deactivated by the plug receptacle becoming occupied.