baber/WOPTO huggingface dataset:
Patent KR-20060126937-A (KR)
Title: Dispenser for low viscosity dental materials
Inventor: DISCKO JOHN J
IPC: A61C19/00
Filed: 2004-09-17
Abstract: A dispenser (14) made of a pliable material having a slit therein for dispensing primarily low viscosity materials. A block (16) made of pliable foam contains a low viscosity material within a slit (18). Dental instruments or dental material applicators (24) having an applicating end (26) are inserted into the slit (18) of the block (16), coating the applicating end (26) with the low viscosity material. The resilient nature of the block (16) material also helps to keep the dental instrument (24) clean by wiping the instrument (24) against the interior sides of the pocket (19) formed by the slit (18). The present invention is particularly well suited for dispensing a lubricating material, such as a resin, on dental instruments used in working, shaping, or contouring a relatively viscous composite restorative material on a patient's tooth (27).
Patent KR-20060126938-A (KR)
Title: Service use device
Inventor: IWATSU TAKESHI
IPC: G06F21/55
Filed: 2004-08-06
Abstract: There is provided a service use device capable of automatically storing user identification information consisting of a user input pattern and network use setting information as is needed and comparing it with the past user identification information, thereby detecting a user change. When a user change is detected, it is possible to automatically erase user information consisting of a user ID and a password stored in a RAM (20), a bookmark stored in a hard disc drive (21), and the like. Thus, it is possible to prevent leak of the user information.
Patent KR-20060092215-A (KR)
Title: Aqueous solutions of fluorescent whitening agents
Inventor: TRABER RAINER HANS
IPC: C11D3/42
Filed: 2004-09-10
Abstract: Compositions comprising (A) a total of from 2 to 30 % by weight, based on the total composition (A) + (B), of one or more amino alcohols of formula (1) herein R1, R2, R3 and R4 are each independently of the others hydrogen, C1-C12alkyl, C5-C24aryl or C6-C36aralkyl, and R5 and R6 are each independently of the other hydrogen or C1-C4alkyl; and (B) from 70 to 98 % by weight, based on the total composition (A) + (B), of a fluorescent whitening agent of formula (2) herein X is hydrogen, an alkali metal ion, an ammonium ion or a hydroxyalkylammonium radical derived from the amino alcohol of formula (1), and R7, R 8, R9 and R10 are each independently of the others -OR11, -NR11R12 or a group of formula (3) wherein R11, and R12 are each independently of the other hydrogen, alkyl, hydroxyalkyl, alkoxyalkyl, carboxyalkyl, dicarboxyalkyl, H2N-CO-alkyI or alkylthio, are distinguished by high solubility in water and by high storage stability of the aqueous solutions.
Patent KR-20070023624-A (KR)
IPC: B60R21/26
Filed: 2004-08-30
Abstract: 가스 발생기는 제1 소정압력 하에 있는 기체를 함유하는 압력용기를 포함한다.  기폭기 하우징은 상기 압력용기의 일단을 밀봉하며, 상기 기폭기 하우징 내에 위치하여 상기 제1 소정압력보다 높은 제2 소정압력에서 파열하도록 구성된 기폭기 파열 디스크에 의해 상기 일단 내부에 밀봉 설치된 개방부를 구비한다.  마이크로-기체 발생기 또는 기폭기는 상기 기폭기 하우징 내에 위치한다.  매니폴드는 상기 압력 용기의 타단을 밀봉하되, 상기 제1 소정압력보다 큰 제3 소정압력 하에서 파열되는 매니폴드(manifold) 파열 디스크에 의해 상기 타단 내부에 밀봉 설치되는 개방부를 구비한다.  상기 마이크로 기체 발생기 또는 기폭기 상에서 점화시 상기 기폭기 하우징 내의 기체 압력이 증가되거나 상기 기폭기 파열 디스크를 파열시킬 수 있는 상기 제2 소정압력을 넘어서서 상기 압력 용기를 경유하는 압력파(pressure wave)를 생산하여 상기 제3 소정압력과 동등 또는 넘어서서 상기 매니폴드 파열 디스크를 파열시킬 수 있는 국부 압력을 만들되, 상기 기폭기 하우징으로부터의 기체 유동에 의해 상기 압력 용기 내의 기체가 고온 및 고압이 되어 상기 매니폴드로 가스가 유동된다.
Patent KR-20060082880-A (KR)
Title: Soil-fumigant-containing solid material
Inventor: WAKAKI NORIYUKI
IPC: A01N33/00
Filed: 2004-11-01
Abstract: Preparations of high soil fumigant content that at the use of soil fumigant, exhibit highly limited release of the soil fumigant and that after the application to soil, accomplish fumigation of soil within a short period of time; and a method of soil fumigation therewith. There is provided a soil-fumigant-containing solid material characterized by containing 60 to 85 wt.% of soil fumigant, 0.5 to 15 wt.% of gelatin, 0 to 10 wt.% of inorganic mineral, 1 to 15 wt.% of polysaccharide that reacts a divalent or higher-valency metal salt to thereby cause gelation and 0.5 to 20 wt.% of water.
Patent KR-20060090302-A (KR)
Title: Wafer processing tape
Inventor: KITA KENJI
IPC: C09J7/29
Filed: 2005-08-02
Abstract: In a wafer processing tape (10), an intermediate resin layer (2), an adhesive layer (3), and if necessary, a bonding agent layer (4) are stacked in this order on a base material film (1). A storage modulus of the intermediate resin layer at 80°C is higher than that of the adhesive layer at 80°C.
Patent KR-20060101865-A (KR)
Title: Method and apparatus for replacing damaged spinal disc
Inventor: BENZEL EDWARD C
IPC: A61F2/44
Filed: 2004-12-08
Abstract: A method for replacing a damaged spinal disc (10) between first and second vertebrae of a spinal column includes connecting a first mounting member (100) with the first vertebra of the spinal column. An artificial disc (10) is moved between the first and second vertebrae and into engagement with the first mounting member (100) to guide the artificial disc into position between the first and second vertebrae. The artificial disc includes a resilient core (90) having a first surface and a second surface, a first retaining member (20) connected to the first surface of the resilient core (90), and a second retaining member (60) connected to the second surface of the resilient core (90). The first retaining member (20) has an outer surface engageable with a first vertebra of the spinal column and an inner surface facing the first surface of the resilient core (90). The second retaining member (60) has an outer surface engageable with the second vertebra of the spinal column and an inner surface facing the second surface of the resilient core (90). An apparatus for replacing a damaged spinal disc in a spinal column includes a first retaining device (20) connected to the first surface of the resilient core (90). A second retaining device (60) is connected to the second surface of the resilient core (90). The second retaining device (60) has an outer surface engageable with a second vertebra and an inner surface facing the second surface of the resilient core (90). The inner surface of the first retaining device is spaced from the core (90). The core (90) deflects into engagement with the inner surface of the first retaining device (20) upon relative movement between the first and second retaining devices (20&60).
Patent KR-20070018814-A (KR)
IPC: C07D277/56
Filed: 2005-01-07
Abstract: 본 발명은 화학식 (I)의 화합물에 관한 것이다. 
     <화학식 (I)> 
     
       
     
     상기 식에서, 
     R 1 은 할로겐, 트리플루오로메틸, 히드록실, C 1   -6  알콕시, C 1   -6  티오알킬, 티오펜 또는 페닐로부터 선택된 1 내지 3개의 치환기로 임의로 치환될 수 있는 C 1   -6  알킬; 또는 C 3   -7  시클로알킬, 티오펜, 벤조티오펜, 피리딜, 푸릴 또는 페닐을 나타내고, 여기서 상기 페닐기는 할로겐 원자, C 1   -6  알킬, C 1   -6  알콕시, 히드록실, 메틸렌디옥시, 페녹시, 벤질옥시 또는 트리플루오로메틸로부터 선택된 1 내지 3개의 치환기로 임의로 치환될 수 있고; 
     R 2  및 R' 2 는 서로 독립적으로 수소 원자, 할로겐 원자, 히드록실, C 1   -3　 알콕시, C 1   -3  알킬, C 3   -7  시클로알킬, O-C(O)-C 1   -6　 알킬기를 나타내거나, 또는 R 2  및 R' 2 는 함께 옥소기를 형성하고; 
     R 3 은 수소 원자, 히드록실로 임의로 치환될 수 있는 C 1   -6 　알킬, C 1   -6  시클로알 킬, 또는 C 1   -3　 알콕시를 나타내고; 
     R 4  및 R 5  중 어느 하나는   (Z)기를 나타내고, 
     R 4  및 R 5  중 다른 하나는 -C(X)R 6 기를 나타내며, 여기서 
     G는 단일 결합 또는 -CH 2 -기를 나타내고, 
     Y는 단일 결합, 산소 또는 황 원자, C 1   -4  알킬렌기 또는 -N(W)-를 나타내고, 여기서 -C 1   -4　 알킬렌-기는 히드록실 또는 C 1   -3  알콕시기로 임의로 치환될 수 있고, W는 수소 원자, 페닐로 임의로 치환될 수 있는 C 1   -3  알킬, 또는 페닐을 나타내고, 
     A 및 B는 서로 독립적으로 수소 또는 할로겐 원자, 히드록실, C 1   -3  알킬, C 1   -3 　알콕시, 트리플루오로메틸, 트리플루오로메톡시 또는 -O-CHF 2 기를 나타내고,  
     단, Y가 단일 결합 또는 산소 원자이고, Z기가   유형인 경우에는 A가 수소 원자가 아니고, 
     X는 산소 원자 또는 황 원자를 나타내고, 
     R 6 은 C 1   -6  알콕시, 히드록실 또는 -NR 7 R 8 기를 나타내고, 여기서 C 1   -6  알콕시기는 페닐로 임의로 치환될 수 있고, 
     R 7  및 R 8 은 서로 독립적으로 수소 원자; 또는 C 3   -7  시클로알킬, C 3   -7  시클로알케닐, C 1   -3  알콕시, 페닐, 모르폴리닐 또는 피리딜로 임의로 치환될 수 있는 C 1   -6  알킬기; 또는 C 3   -7  시클로알킬, C 1   -6  알콕시 또는 페닐기를 나타내고, 여기서 상기 C 3   -7  시클로알킬 및 페닐기는 할로겐 원자, 히드록실기, C 1   -3  알킬 및 C 1   -3  알콕시기로부터 선택된 1 또는 2개의 기로 임의로 치환될 수 있거나, 또는 
     R 7  및 R 8 은 이들을 보유하는 질소 원자와 함께 아지리딘, 아제티딘, 피롤리딘, 피페리딘, 모르폴린 또는 벤조피페리딘 고리를 형성한다. 
     본 발명의 화합물은 염기, 산 부가염 또는 수화물의 형태를 갖는다.  본 발명은 또한 상기 화합물의 치료 용도에 관한 것이다. 
     아실아미노티아졸 유도체, β-아밀로이드 (β-A4) 펩티드 형성 억제제, 노인성 치매, 알츠하이머병
Patent KR-20070007279-A (KR)
Title: Twin lifting machinery for two 40 feet container shore crane
Inventor: ZHANG BAOHUA
IPC: B66C13/14
Filed: 2005-10-21
Abstract: The invention discloses a double-lifting mechanism for a container crane capable of slinging double 40-ft containers, which comprises motors, high speed brakes, two reducers, a plurality of winch drum brakes. It characterizes in that at least two motors and two reducers are provided. The input-ends of the two reducers are connected to the output-ends of the motor, the output-end of each reducer is connected to the winch drum, and the winch drum brakes are arranged on the winch drum respectively. Two sets of independent lifting mechanisms are operated synchronously or else independently by electric controls, so that the double-lifting mechanism can realize the lifting and lowering of the two slings on seaside and shoreside respectively, thereby it achieves not only the synchronous operation of double-slings, but also the operation of a single sling. The efficiency of the container crane for load and unload can be improved by at least 60%, so it would be quite practical. ® KIPO & WIPO 2007
Patent KR-20060123572-A (KR)
Title: Plasma-excited chemical vapor deposition method, silicon/oxygen/nitrogen-containing material and layered assembly
Inventor: GABRIC ZVONIMIR
IPC: H01L21/314
Filed: 2005-01-22
Abstract: The invention relates to a plasma-excited chemical vapor deposition method for forming a silicon/oxygen/nitrogen-containing material. The invention provides that during the supply of silicon material and oxygen material, nitrogen material is supplied while using an organic silicon precursor material.
Patent KR-20070053652-A (KR)
Inventor: TANABE KEIJI
IPC: F16H55/02
Filed: 2004-10-15
Abstract: 냉간단조에 의해서 톱니형 부품을 제조하는 방법에 있어서, 냉간단조로 초기 톱니형을 가공하는 초기공정과, 완성 톱니형을 냉간단조로 사이징(sizing) 가공하는 완성공정과의 중간에, 냉간단조에 의해, 초기 톱니형의 톱니두께와 거의 동일하게 유지하거나, 초기 톱니형의 톱니두께보다 10% 이하의 범위내에서 톱니두께를 감소시킴과 동시에, 초기 톱니형으로부터 톱니끝을 밀어내는 중간공정을 개재시킨다. 초기 톱니형에 있어서의 톱니바닥의 양쪽의 둥근 부분이 완성 톱니형에 있어서의 톱니바닥의 양쪽의 둥근 부분보다 크다.
Patent KR-20070004931-A (KR)
Title: Lithium ion secondary battery and charge/discharge controlling system thereof
Inventor: KATO KIYOMI
IPC: H01M50/449
Filed: 2005-03-16
Abstract: Disclosed is a lithium ion secondary battery comprising a positive electrode containing a composite lithium oxide, a negative electrode capable of adsorbing and desorbing lithium, a sheet separator interposed between the positive electrode and the negative electrode, a nonaqueous electrolyte solution and a porous electron insulating membrane bonded to the surface of the negative electrode. The sheet separator is a single-layer film composed of a polypropylene resin or a multilayer film one of whose layers in contact with the positive electrode is composed of a polypropylene resin. The porous electron insulating membrane contains an organic oxide filler and a binder, and the sheet separator is 1.5 or more times as thick as the porous electron insulating membrane. ® KIPO & WIPO 2007
Patent KR-20070042503-A (KR)
Inventor: GOULD MICHAEL L
IPC: C08G18/32
Filed: 2005-04-19
Abstract: 본 발명의 액체 비가교 UV-경화성 마이클 부가 수지 및 그 배합물은 그것들이 매우 효과적인 코팅 물질이 되도록 하는 성능 성질들을 나타내고, 이 성질들은 조성물에 의존하여 크게 개질될 수 있다.  마이클 공여자 및 수용자는 I형 및(또는) II형 광개시제로 구성될 수 있고, 특수한 광반응성 및 성질을 갖는 UV-경화성 코팅을 제조하기 위해 본원에 개시된 코팅 조성물 내에 포함될 수 있다.  금속, 플라스틱, 목재, 종이 및 유리에 대한 우수한 접착성을 나타내는 수지가 제조될 수 있다.  그것들은 광범위한 경성, 강인성, 가요성, 인장 강도, 내오염성, 내스크래치성, 내충격성, 내용매성 등을 나타낸다.  거의 모든 요망되는 코팅 성능 파라미터가 원료 구성단위를 적절히 선택함으로써 달성될 수 있다. 
       
     마이클 부가 수지, 마이클 공여자, 마이클 수용자, 광개시제, 접착성, 코팅
Patent KR-20080066131-A (KR)
Title: Equipment and method for treatment waste water
Inventor: SHIN HO SEUP
IPC: B09B3/00
Filed: 2007-01-11
Abstract: An apparatus and a method for treating wastewater of food garbage are provided to simplify structure and process for treating wastewater of food garbage, and proceed a wastewater treatment operation in such a way that organic solids contained in wastewater are directly separated and removed. An apparatus for treating wastewater of food garbage comprises: a first separation part for filtering organic solids(Q1) contained in wastewater(W) from the wastewater by centrifugal force of a centrifuge(M1); a chemical mixing part(T2) for mixing treatment chemicals for coagulating the organic solids with the wastewater passing through the first separation part; a second separation part for pressurizing the wastewater mixed with the treatment chemicals in the chemical mixing part by pressurization force of a screw press(M2) to filter organic solids(Q2) coagulated in the wastewater; a third separation part for floating a fraction material(Q3) of an oil component contained in the wastewater passing through the second separation part by micro-bubbles of a dissolved air flotation system(M3) to separate the fraction material of the oil component from the wastewater; and a fourth separation part for settling the fraction material of the oil component filtered in the third separation part in a settler(M4) to filter residual waste raw water(W1) and residual organic solids(Q2) from the fraction material.
Patent KR-20080067194-A (KR)
Title: Prevention circuit for afterimage of television
Inventor: LEE JAE WOON
IPC: G09G3/20
Filed: 2007-01-15
Abstract: A circuit for preventing an afterimage of television is provided to prevent afterimage on a screen of the television by converting still image data when a still image is displayed over a set time. A circuit for preventing an afterimage of television includes a program clock reference counter(20), a video reverse packet unit(31), a video decoder(32), first and second video stream memories(33,34), a comparator(35), and a controller(36). The program clock reference counter detects a screen display time and a decoding time by counting clock of transmission streams. The video reverse packet unit executes a reverse packet process on video streams. The video decoder decodes the video streams. The first and second video stream memories sequentially store the decoded video streams. The comparator compares the video streams stored in the first and second video stream memories. The controller checks whether a current image is the still image by using the comparison result, checks a display duration time of the still image by using the screen display time and the decoding time, converts still image data when a duration time is more than a set time, and displays the converted data.
Patent KR-20070078061-A (KR)
Title: Method for reporting to server and terminal thereof
Inventor: KIM TE HYUN
IPC: G06F15/16
Filed: 2007-01-18
Abstract: A method and a terminal for reporting to a server are provided to efficiently use resources of the terminal and a communication link by filtering and reporting a result of a DM command to a DM server, and enable the DM server to know the result of the DM command even if the result is not transferred to the DM server by accessing a log of the terminal. The first module searches a gating rule and determines to report the result of the DM command to the DM server according to the gating rule if the DM command is performed. The second module reports the result to the DM server according to a determination result. The gate rule includes the first element code for indicating a reference number of the command not to be reported and the second element for pointing a response code not to be reported. The third module installs scheduling context by receiving the scheduling context includes the DM command, a DM command executing condition, and the gating rule. The result of the DM command corresponds to one of a status, result, or alert type. Determination is performed to only the status type.
Patent KR-20070077450-A (KR)
Title: Method of manufacturing semiconductor device
Inventor: MATSUMURA TAMIO
IPC: H01L29/73
Filed: 2007-01-19
Abstract: A method for manufacturing a semiconductor device is provided to obtain an excellent ohmic contact and to prevent the warpage of a semiconductor wafer by forming a second metal film on a rear surface of the semiconductor wafer after a heat treatment. A semiconductor wafer(1) with a front surface and a rear surface is prepared. A first metal film(3) is formed on the rear surface of the wafer. A heat treatment is performed on the resultant structure to form an ohmic contact between the wafer and the first metal film. A second metal film(5) is formed on the rear surface of the wafer. The second metal film is made of Ni.
Patent KR-20080069057-A (KR)
Title: Blue glass composition improving the absorption of solar heat ray and ultraviolet ray
Inventor: LEE SI MOO
IPC: C03C3/076
Filed: 2007-01-22
Abstract: A blue glass composition is provided to prevent additional yellowish brown coloration, to show improved spectrum characteristics, and to be suitable for automotive window glass capable of being easily manufactured by a general float method. A blue glass composition having absorptions of solar heat rays and ultraviolet rays includes 0.4-0.7wt% of Fe2O3, 0.1-0.5wt% of ZnO, and 0.5-1.5wt% of CeO2, based on 100wt% of the total soda-lime-silica glass composition. The blue glass composition has a redox ratio ranging from 0.35 to 0.60. The soda-lime-silica glass composition contains 65-75wt% of SiO2, 0-5wt% of Al2O3, 5-15wt% of CaO, 0-5wt% of MgO, 10-18wt% of Na2O, and 0-5wt% of K2O. Further, a main wavelength of the blue glass composition is 485 to 495 nm and a purity of the blue glass composition is under 13%.
Patent KR-20080072168-A (KR)
Title: Piping structure of radiator
Inventor: LEE YONG CHUN
IPC: F24D19/02
Filed: 2007-02-01
Abstract: A pipe structure for a heat dissipating apparatus is provided to ensure firm building construction by minimizing the volume of a buried pipe installed in a wall surface or a bottom. A pipe structure for a heat dissipating apparatus comprises a heat dissipating apparatus(100) having a hot water inlet port(111) and a boiler(200) having a hot water port(210). Each of the hot water inlet port and the hot water port has a through hole(310) at one side thereof and a distributor(300) at the other side thereof. The distributor includes a first connection member(320) and a second connection member(330). The through hole is connected with the hot water port through an integrated pipe(400). The first connection member and the second connection member is connected with the hot water inlet port of the heat dissipating apparatus through a hot water inlet pipe(500).
Patent KR-20080074427-A (KR)
Title: Plasma display panel and method for fabricating thereof
Inventor: LEE JIN WOO
IPC: H01J11/38
Filed: 2007-02-09
Abstract: A plasma display panel and a manufacturing method thereof are provided to form rapidly a dielectric for protecting a metal electrode. A plasma display panel includes two plate-shaped members, a heat-resistant layer, a metal electrode(35), a phosphor, and a barrier rib layer(33). A transparent material is formed on an upper surface of each of the two plate-shaped members. The heat-resistant layer is formed between the two plate-shaped members. A dielectric(36) is formed on the metal electrode by performing an electro-polymerization process using pyrrole as a monomer. The heat-resistant layer is composed of an organic PI film(32) or an inorganic glass.
Patent KR-20080074516-A (KR)
Title: Roller for conveyor
Inventor: RA BOK NAM
IPC: B65G13/00
Filed: 2007-02-09
Abstract: A roller for a conveyor is provided to prevent moisture and dust remaining in a labyrinth from being introduced into a bearing by using centrifugal force by radially forming a projection unit. A roller(100) for a conveyor includes a roller pipe body(110), a shaft(120), a bearing(130), an end cap(140), a housing member(150), and a cover(180). The roller pipe body transports articles. The shaft is rotatably installed at the roller pipe body and forms a rotation shaft of the roller pipe body. The bearing is installed between the roller pipe body and the shaft, rotatably supports the roller pipe body, and includes inner and outer races and a rolling element. The end cap is installed in the roller pipe body and is coupled with the roller pipe body. The housing member is arranged between the bearing and the end cap and compensates misalignment of the bearing. The cover is in contact with one side surface of the housing member.
Patent KR-20070091531-A (KR)
Title: Method of navigation on a mobile handset and the mobile handset
Inventor: GLOYD DANIEL MONTEITH
IPC: H04M1/72466
Filed: 2007-02-16
Abstract: A navigation method in a mobile handset and the mobile handset thereof are provided to realize an audio user interface, a camera equipped with a touch sensitive keypad, and a touch sensitive scrolling function. A keypad consists of plural keys individually having more than one alphabetic and functional shape, and wherein at least a portion of the plural keys includes control indication thereon in order to control the navigation of a user interface of a mobile handset. The keypad has 12 keys where 3 keys are arrayed in width while 4 keys are arrayed in length, respectively. At least a portion of the 12 keys is used for selecting alphabetic characters by comprising alphabetic indication provided to the keys.
Patent KR-20080082398-A (KR)
Title: Light emitting display
Inventor: YOO DONG HEE
IPC: H05B33/26
Filed: 2007-03-08
Abstract: A light emitting display device is provided to prevent reduction of brightness of sub pixels by dividedly forming dummy pad units at both sides on a substrate to supply the same signal to the sub pixels inside a display unit. A light emitting display device includes a substrate(110). A display unit(130) has a plurality of sub pixels(120) arranged on the substrate in a matrix shape. Signal lines(140) are formed on the substrate and include a scan line, a data line, a power line, and a ground line connected to the sub pixels respectively. A pad unit(150) is formed at one side of the substrate and has a driving driver to supply driving signals to some of the signal lines. A connection pad unit(155) is formed at one side of the substrate to be electrically connected to the signal lines and the pad unit. Dummy pad units(160) are formed at both outer spaces of the pad unit to be connected to the signal lines connected to the sub pixels.
Patent KR-20080087553-A (KR)
Title: Developing unit and image forming apparatus having the same
Inventor: KIM JONG IN
IPC: G03G21/10
Filed: 2007-03-27
Abstract: A waste toner collecting apparatus, a developing unit and an image forming apparatus with the same are provided to prevent a waste toner housing from being deformed by heat and pressure, thereby preventing an image white line, a backward flow of waste toner, and a cleaning defect caused by interference of a light path. A waste toner housing(110,120) has first and second surfaces facing each other. Support units(200) connect and support the first and second surfaces. The support unit includes plural support protrusions(210) and protrusion receiving units(220) which are complementarily disposed in facing surfaces of the first and second surfaces. The support protrusion is in the first surface. The protrusion receiving unit is in the second surface.