baber/WOPTO huggingface dataset:
Patent JP-2004517786-A (JP)
IPC: B65B19/22
Filed: 2002-01-03
Abstract: In the case of a (soft) pack for cigarettes, the blank ( 10 ) made of paper or similar material is provided, adjacent to an end wall ( 16 ), with a multi-layered folding strip ( 21 ) running all the way round. In order that inner layers can be connected to outer, covering layers via glue-spot of glue ( 20 )-a round cutout ( 29 ) made by punching is provided, the spot of glue ( 20 ) being positioned in the region of said cutout. A special feature is constituted by the production of blanks ( 10 ) for such a pack.
Patent JP-2004526438-A (JP)
Title: 細胞の貯蔵・培養および／または増殖のための人工バイオ装置
IPC: C12M3/06
Filed: 2002-02-11
Abstract: 人工バイオ装置は細胞培養チャンバ（１４）が半透膜壁によって培養基フローチャンバ（１７，２１）と血漿・血液フローチャンバ（２１）とから区分されている構造の反応器（６）を有する。少なくとも一方のフローチャンバ（１７，２１）はコイル状に巻かれた半透膜材料から成る１本のチューブ（１８，２２）によって形成されている。
Patent JP-2004527602-A (JP)
IPC: A61K6/884
Filed: 2002-02-13
Abstract: The invention relates to polymerizable preparations that contain: (a) 1 to 80% by weight of an epoxide or of a mixture of epoxides of the general formula (I), wherein n and m independently are 1, 2, 3, or 4, and wherein the molar mass of the epoxide or the average molar mass of the mixture of epoxides is 360 to 3000 g/mole, (b) 0 to 80% by weight of an epoxide or of a mixture of epoxides that are different from (a), (c) 3 to 85% by weight of fillers, (d) 0.01 to 25% by weight of initiators, retarders and/or accelerators, (e) 0 to 25% by weight of adjuvants, the percentages relating to the overall weight of the individual preparation.
Patent JP-2004522627-A (JP)
IPC: B29C48/58
Filed: 2002-02-22
Abstract: The invention relates to a screw pump comprising an inlet cross-section and an outlet cross-section for conveying free-flowing media, in particular plastic melts and rubber blends. Said pump comprises two screw shafts (20, 21), having a distance (alpha) between their axes, which are located in a pump housing (3) comprising two partially overlapping housing bores (4, 5) that run through said housing (3) in a longitudinal direction and which can be rotationally driven in an equidirectional manner. A plurality of single-flight screw element groups (1, 2), which closely intermesh, are arranged on said shafts in a rotationally-fixed manner. The invention also relates to a multi-screw extruder comprising a screw pump of this type.
Patent JP-2004519251-A (JP)
Title: 大豆加工副産物からピニトールまたはカイロイノシトールを高収率で回収する方法
IPC: C12R1/86
Filed: 2001-11-20
Abstract: 本発明は、大豆加工副産物から有用な産物を高収率で回収する方法に関し、さらに詳しくは、微生物を培養して大豆加工副産物のピニトール誘導体をピニトールに転換させることによって大豆加工副産物中のピニトールの濃度を増加させた後、遠心分離または濾過によって前記大豆加工副産物から微生物、不溶性物質および他の高分子を除去してピニトールまたはカイロイノシトールを含む水溶液を得、前記溶液を活性炭に接触させてピニトールまたはカイロイノシトールを吸着させた後有機溶媒で段階別または濃度別に回収する段階を含む工程を含む、大豆加工副産物からピニトールまたはカイロイノシトールを高収率で回収する方法に関する。
Patent JP-2004519964-A (JP)
Title: Ｄ／ａ変換器
IPC: H03M1/06
Filed: 2002-04-04
Abstract: 少なくとも２つの抵抗ラダー（Ａ，Ｂ）及び少なくとも２つのスイッチバンク（ＳｗＡ，ＳｗＢ，…）と、２つの抵抗ラダーをそれらの終端で接続してリングトポロジーを形成し、２つのアナログ出力信号を出力して差動アナログ出力信号を生成する手段を有する接続手段（Ｒｘ）と、を備えたＤ／Ａ変換回路。出力手段は、さらなる抵抗ラダー及びスイッチバンク（Ｃ，Ｄ）を含んで、セグメント型の高レゾリューションを提供することができる。第１及び第２のスイッチバンクは負荷効果を回避するため、ラダーの電源側に設けられる。オプションとして、各スイッチは対をなして開閉するように制御されるマッチペアスイッチの一方を形成する。動作状態にある第２のスイッチは、スイッチの抵抗値とは無関係にラダーに基準電圧を印加するように増幅器（ＡＭＰＡ，ＡＭＰＢ）へのフィードバックを行う。
Patent JP-2004523401-A (JP)
IPC: B41C1/05
Filed: 2002-04-15
Abstract: Laser-engravable flexographic printing element comprises a flexible dimensionally stable support bearing a laser-engravable, relief-forming, thermally and/or photochemically crosslinkable elastomer layer in which the binder comprises at least 5 wt.% of syndiotactic polybutadiene (I) with a 1,2-linkage content of 80-100%, a crystallinity of 5-30% and a molecular weight of 20,000-300,000.
Patent JP-2004524644-A (JP)
Title: 高い開口数のプラスチック対物レンズを含むスキャン装置
IPC: G11B7/22
Filed: 2002-03-25
Abstract: 光学記録媒体（１０２）の情報層（１０４）をスキャンするための光学的スキャン装置は放射線ビーム（１０８）を発生する放射線源（１１０）と、放射線を情報層上に収束するための高ＮＡを持つ対物レンズシステム（１１８）を含む。対物レンズシステムは第１レンズ（１１６）と第２レンズ（１１７）を含む。第１レンズと第２レンズはプラスチックで造られる。第１及び第２レンズの球面収差の温度依存度の符号は異なり、２つのレンズの球面収差の温度依存度の大きさは実質的に等しくされて、対物レンズシステム全体の球面収差の温度依存度が３０Ｋの温度変化に対して３０ｍλＯＰＤｒｍｓ未満に減少するようにしている。
Patent JP-2004522605-A (JP)
Title: 切削加工用工具
IPC: B23B27/16
Filed: 2002-05-03
Abstract: 本発明は、切削加工を対象にした工具に関するものであり、この工具は、切削インサート（１）のための上面に形作られた座（９）を有しているホルダ（２）を含んでいて、切削インサート（１）は、フィンガ（１８）を備えたクランプ本体（１６）を具備するクランプ機構によってクランプ可能であり、クランプ本体（１６）は、ホルダの内部のキャビティ（１９）の内側で移動可能であり又ホルダの中の孔（２０）のねじ（１７）と協働する。上面とは異なる別の方向からねじ（１７）にアクセスすることを可能にする目的をもって、前記孔が、ホルダ（２）の上面（４）から離れた側面に開口している。ねじは、太い第一部分（２１）、及び細い第二部分（２２）をもつように形作られ、第二部分（２２）はクランプ本体（１６）内の貫通穴のめねじと係合するおねじを有している。本発明の特徴は、ホルダ（２）内の孔（２０）が、円筒状であり又滑らかな表面を有していることと、ねじの太い部分（２１）が、円筒状の滑らかな包絡面を有していて孔の中に回転可能に取り付けられることである。さらに、孔（２０）とは反対側の領域内のキャビティ（１９）が、前壁部分（２７）によって取り囲まれて、この前壁部分（２７）が、座（９）の底面（１０）に沿った自由エッジと関係して配置されることである。
Patent JP-2004525819-A (JP)
Title: 車両座席
IPC: B60N2/20
Filed: 2002-05-10
Abstract: 床を有する車両のための車両座席は、乗員使用位置と、収容位置と、出入り位置と、を有する。この座席は、車両床（２６）に回転可能に連結されたライザ（２２）と、ライザ（２２）に回転可能に接続された背もたれと、背もたれに回転可能に連結されたクッションと、を含む。座席が乗員使用位置から出入り位置へ移動される時、背もたれ（１４）はライザ（２２）に対して固定されたままであり、座席が乗員使用位置から収容位置へ移動される時、ライザは車両床（２６）に対して固定されたままである。
Patent JP-2004528187-A (JP)
IPC: A46D9/02
Filed: 2002-05-17
Abstract: Methods and devices are provided for end rounding filaments for use on brushes. The devices include an air driven planetary gear system rotating a sanding wheel through a varied elliptical path that attacks the filaments from all sides.
Patent JP-2004526172-A (JP)
Title: プロパンタンクレベルを監視するデバイスおよびシステム
IPC: G01F1/42
Filed: 2002-01-22
Abstract: 配管取付けガス流量センサは、流量オリフィスを通るガス流を変化させるべく、移動可能な流量オリフィスと、前記流量オリフィスに隣接する固定流量リストリクタとを備えている。前記流量オリフィスおよび前記流量リストリクタは、前記流量オリフィスが一定増分づつ移動すると、前記流量オリフィスを通る流量が一定の率で変化するように形成されている。前記移動可能な流量オリフィスに固定されたマグネットにより、流量リストリクタの各一定増分の移動に対応して磁束が変化する。磁束センサは、前記磁束の変化に応答して一定率の流量変化に対応する出力を提供する。 【選択図】図３
Patent JP-2004214433-A (JP)
Title: Printed wiring board, method for manufacturing the same and semiconductor device
Inventor: UCHIUMI SHIGERU
IPC: H05K1/16
Filed: 2003-01-06
Abstract: <P>PROBLEM TO BE SOLVED: To provide a printed wiring board that can be formed at an optional capacitance density without variance and is incorporated with a capacitor that can surely prevent shortcircuiting between facing electrodes, a semiconductor device provided with the printed wiring board; and to provide a method for manufacturing the printed wiring board.  <P>SOLUTION: The printed wiring board 20 is provided with conductor films 2 and 5 facing each other, an adhesive 3 that is provided between the conductor films 2 and 5 and is in contact with at least one of them, and a film-like dielectric film 4 that is provided between the conductor films 2 and 5 and is in a solid state under a condition where the adhesive 3 has fluidity. In case where the thickness of the adhesive 3 and the film-like dielectric film 4 is assumed as T1 and T2 respectively, they satisfy the relationship of 0<T1/(T1+T2)≤0.4.  <P>COPYRIGHT: (C)2004,JPO&NCIPI
Patent JP-2004217702-A (JP)
Title: W/o emulsion type flame-retardant hydraulic fluid
Inventor: SHIDARA YUJI
IPC: C10M159/24
Filed: 2003-01-10
Abstract: <P>PROBLEM TO BE SOLVED: To provide a W/O emulsion type flame-retardant hydraulic fluid which has excellent lubricity and emulsion stability and can reduce sludge deposits caused by the deterioration of the hydraulic fluid and the extreme rise of hydraulic fluid temperature.  <P>SOLUTION: This W/O emulsion type flame retardant hydraulic fluid prepared by dispersing water in a base oil with an emulsifier is characterized by adding a neutral calcium sulfonate having a total base value of 15 to 30 mgKOH/g as the emulsifier.  <P>COPYRIGHT: (C)2004,JPO&NCIPI
Patent JP-2004263706-A (JP)
Title: Bearing unit and rotation driving device having the same
Inventor: SHISHIDO YUJI
IPC: F04D29/04
Filed: 2003-01-10
Abstract: <P>PROBLEM TO BE SOLVED: To provide a bearing unit having superior reliability with no leakage of lubricating oil for accurately and inexpensively solving the problem that a shaft trouble is caused during the rotation of a rotor by the unbalance of a pair of dynamic pressure generating grooves, and to provide a rotation driving device having the same.  <P>SOLUTION: The bearing unit comprises a shaft 100 having an exposed end 160, an inner end 162 of a small outer diameter provided on the opposite side to the exposed end 160 and an intermediate stepped portion 170 of a small outer diameter located between the exposed end 160 and the inner end 162, a thrust bearing 130 for rotatably supporting the inner end 162 of the shaft 100 in the direction of thrust, and the lubricating oil 150 filled in a holding member 120 among the shaft 100, a radial bearing 110 and the thrust bearing 130. An axial length (m) of the inner end 162 of the shaft 100 is smaller than an axial length (n) ranging from the outer face of the holding member 120 to a portion including the intermediate stepped portion 170 of the shaft 100.  <P>COPYRIGHT: (C)2004,JPO&NCIPI
Patent JP-2004219729-A (JP)
Title: Cooling apparatus and image forming apparatus
Inventor: IWASAKI YUJI
IPC: G03G21/20
Filed: 2003-01-15
Abstract: <P>PROBLEM TO BE SOLVED: To provide a cooling apparatus which produces little noise and has improved cooling efficiency and enables a fan therefor to be freely arranged, and also to provide an image forming apparatus equipped with the cooling apparatus.  <P>SOLUTION: The cooling apparatus for the image forming apparatus is loaded to an image forming apparatus equipped with a transfer part having an electrifier, and provided with: an air inlet duct having an air outlet arranged near the electrifier and the transfer part; a nearly box-shaped fan housing part fixed on the side face or the top face inside the image forming apparatus and connecting to the air inlet duct; an air inlet valve arranged on the air outlet side of a connection part where the air inlet duct and the fan housing part are connected; the fan fixed in the fan housing part, having an air supply/discharge switching means, and rotated at a plurality of rotating speed; and an air supply/discharge port arranged behind the fan storing part in the image forming apparatus.  <P>COPYRIGHT: (C)2004,JPO&NCIPI
Patent JP-2004006632-A (JP)
Title: Connection structure as well as forming method for circuit board and indicating device having connection structure for circuit board
Inventor: SUGIMOTO SHINICHI
IPC: G09F9/30
Filed: 2003-01-16
Abstract: <P>PROBLEM TO BE SOLVED: To provide the connection structure of a circuit board and the forming method of the same, preventing the separation of a conductive resin layer and connecting between terminal electrodes so as not to generate any misregistration.  <P>SOLUTION: In the connection structure of the circuit board, the first circuit substrate 42 is bonded to the second circuit board 44 through a conductive resin layer 46. The first circuit board 42 is provided with a first terminal region 50 comprising a plurality of the first terminal electrodes 48 arrayed along a first direction and a dummy electrode 52 arranged so as to be neighbored to a first direction in relation to the first dummy electrode 52. A second circuit board 44 is provided with a second terminal region 54 comprising a plurality of second terminal electrodes 56 arrayed along the first direction. The second terminal region 54 is arranged so as to be opposed to the first terminal region 50 through the conductive resin layer 46 while respective second terminal electrodes 56 in a plurality of second terminal electrodes 56 are electrically connected to respective first terminal electrodes 48 in the first terminal electrodes. The conductive resin layer 46 covers at least one part of the dummy electrode 52 and is provided with a plurality of openings 58.  <P>COPYRIGHT: (C)2004,JPO
Patent JP-2004224102-A (JP)
Title: Vehicle cockpit structure
Inventor: IKUTA HARUKI
IPC: B62D25/08
Filed: 2003-01-21
Abstract: <P>PROBLEM TO BE SOLVED: To reduce manhours of design of a structure body arranged at a front side of a driver's seat and a front-seat passenger in a cockpit of a vehicle and connecting both left and right side surfaces of a vehicle body.  <P>SOLUTION: Although positions of a steering and a pedal are different in a one box car and a passenger car, in the case of the same platform, the structure body can be made common by setting a mounting angle of the structure body for adapting to a seated position and an attitude of the driver. The structure body is divided to a first structure body 30 arranged at a front side of the driver's seat and supporting a steering shaft 31; and a second structure body 40 arranged at a front side of the front-seat passenger. According to this, the first structure body 30 can be made common in the case of the same platform.  <P>COPYRIGHT: (C)2004,JPO&NCIPI
Patent JP-2004226826-A (JP)
Title: Fixing device
Inventor: KOJIMA ETSUSHI
IPC: G03G15/20
Filed: 2003-01-24
Abstract: <P>PROBLEM TO BE SOLVED: To realize the prolongation of the life of fixing film.  <P>SOLUTION: In the fixing device having the film 2 moving in contact with a heating member 6, and a pressure member 4 forming a nip part N with the member 6 through the film 2, a member to be heated P is introduced to the nip part N and moved to pass through the nip part N together with the film 2, whereby the material P is processed to be heated by receiving the heat from the member 6 through the film 2. The fixing device has a glossiness detection means for detecting the glossiness of the surface layer of the film and a pressuring force changing means for changing pressuring force between the member 6 and the pressure member 4 in accordance with detection output from the glossiness detection means.  <P>COPYRIGHT: (C)2004,JPO&NCIPI
Patent JP-2004235241-A (JP)
Title: Thin film transistor type display, process for fabricating thin film element, thin film transistor circuit board, electro-optical device, and electronic equipment
Inventor: KIMURA MUTSUMI
IPC: H01L29/786
Filed: 2003-01-28
Abstract: <P>PROBLEM TO BE SOLVED: To reduce the size of an element chip 45 and to reduce the fabrication cost of a thin film transistor type display in which a thin film transistor 44 is formed on a first substrate, interconnect lines are formed on a second substrate, and the element chip 45 including one or more thin film transistors 44 is stripped from the first substrate and transferred onto the second substrate.  <P>SOLUTION: In the patterning process of the thin film transistor 44, holographic exposure and a tracking focus system is employed, design rule of 1.0 μm or less is employed, and only a polysilicon layer 41 and a first metal layer 42 are employed as the interconnect lines of the element chip 45.  <P>COPYRIGHT: (C)2004,JPO&NCIPI
Patent JP-2004233100-A (JP)
Title: Position detecting method
Inventor: MOROTA SATOSHI
IPC: G01S5/04
Filed: 2003-01-28
Abstract: <P>PROBLEM TO BE SOLVED: To provide a method for efficiently detecting the position of a mobile communication terminal of high accuracy by a plurality of mobile base stations.  <P>SOLUTION: A master station 11 out of mobile base stations 11-14 detects a presence sector of a mobile communication terminal 15 (S101). Next, the presence range of the mobile communication terminal 15 is narrowed (S104) based on the received power of the position detection signal by the mobile communication terminal 15 which is respectively received by the mobile base stations 11-14 subjected to the initial arrangement (S102) around the presence sensor. Then, the estimated position of the mobile communication terminal 15 is calculated (S105-S106) based on the direction of presence of the mobile communication terminal 15 estimated by the mobile base stations 11-14 in the narrowed range. In addition, the mobile base stations 11-14 are subjected to re-arrangement and movement around the estimated position, and the processing of calculating the estimated position of the mobile communication terminal 15 is repeated based on the direction of presence of the mobile communication terminal 15 estimated by the mobile base stations 11-14 until the predetermined accuracy is obtained (S107-S111).  <P>COPYRIGHT: (C)2004,JPO&NCIPI
Patent JP-2004231591-A (JP)
Title: Powder-containing cosmetic
Inventor: KAWANISHI SHIRO
IPC: A61K8/00
Filed: 2003-01-31
Abstract: <P>PROBLEM TO BE SOLVED: To prepare a powder-containing cosmetic hardly causing whitening when coated on the skin, and providing excellent natural powdery sense of use.  <P>SOLUTION: This powder-containing cosmetic contains two kinds of particles having different particle diameters, i.e., spherical particles constituted by the coherence of fine particles A having 1-30 nm particle diameters (r) and fine particles B having particle diameters R of 10-100 times as large as those of the particles A. Unevenness like a golf ball is formed on the surface of the spherical particle to provide the natural powdery sense of use without whitening the skin when being added to the cosmetic.  <P>COPYRIGHT: (C)2004,JPO&NCIPI
Patent JP-2004237147-A (JP)
Title: Garbage treatment machine and operation control method therefor
Inventor: KAMATA HISASHI
IPC: B09B3/00
Filed: 2003-02-03
Abstract: <P>PROBLEM TO BE SOLVED: To certainly supply the optimum amount of garbage (a) into a garbage decomposition tank 1 to efficiently decompose the same by a simple means.  <P>SOLUTION: This garbage treatment machine is equipped with a measuring means 9 for measuring the weight of the garbage (a) housed in the garbage decomposition tank 1 and a control program for reporting the amount charged or amount of the garbage (a) periodically taken-out optimum corresponding to the decomposition stage of the garbage (a) on the basis of the measured weight of the measuring means 9.  <P>COPYRIGHT: (C)2004,JPO&NCIPI
Patent JP-2004236717-A (JP)
Title: Gravitational vehicle and assembly kit thereof
Inventor: MINO MASAHIRO
IPC: A63G21/02
Filed: 2003-02-04
Abstract: <P>PROBLEM TO BE SOLVED: To provide a gravitational vehicle allowing a user to enjoy not only riding a completed vehicle but also assembling the vehicle by the user himself/herself to feel the pleasure of making an object.  <P>SOLUTION: The gravitational vehicle 1 with the gravity on a slope as the propulsive force is made up by assembling a kit. The kit, which can be assembled/disassembled, comprises a group of body component members to be a body 10 including a seat part 12 without including a propulsion source, a group of component members for a front wheel mechanism 20 to constitute a front wheel 21 and a mechanism 20X for steering the front wheel, a group of component members for a rear wheel mechanism 30 to constitute a rear wheel 31 and a mechanism 30X to control the rear wheel, and a connection means for connecting the component members in such a way that the most of the members are detachable to make up the vehicle 1.  <P>COPYRIGHT: (C)2004,JPO&NCIPI
Patent JP-2004239717-A (JP)
Title: Method of wood stress wave nondestructive test
Inventor: HUANG YAN-SAN
IPC: G01N3/30
Filed: 2003-02-05
Abstract: <P>PROBLEM TO BE SOLVED: To provide a method of wood stress wave nondestructive test which calculates a sound velocity and an elastic module by a resonance frequency in the longitudinal direction of a sample, and is applicable for measurement on a production line by improving a conventional rattle noise method.  <P>SOLUTION: A portion near the center on one face of the sample is placed on a guidance system, and slide of the sample is prevented by a frictional force between the guidance system surface and the sample surface, and one end of the sample is knocked by a knocking device. A stress wave generated at the knocking time is transferred to the other end of the sample, and reflection of the stress wave is generated on the other end of the sample, and thereby the generated stress wave is returned to one end where the sample is knocked. The stress wave makes a round trip at the sound velocity between both ends of the sample, and energy of the stress wave is consumed by internal friction of the sample. The change of the frictional force in the guidance system is received by a receiving device connected electrically to the guidance system, and the change of the frictional force is analyzed by an analytical device connected electrically to the receiving device, and the resonance frequency in the longitudinal direction of the sample is detected, to thereby calculate the sound velocity and the elastic module by the resonance frequency.  <P>COPYRIGHT: (C)2004,JPO&NCIPI
Patent JP-2004089982-A (JP)
Title: Air cleaning filter
Inventor: NAKAJIMA TOSHIMITSU
IPC: A61L9/16
Filed: 2003-02-05
Abstract: <P>PROBLEM TO BE SOLVED: To provide an air cleaning filter the filter part of which can be easily attached and removed without breaking the filter part and a casing so that the casing and the filter part can be used repeatedly.  <P>SOLUTION: The air cleaning filter composed of the casing and the filter part is characterized in that the filter part is a flexible filter and can be attached to and removed from the casing, that a flexible corrugate filter, namely a flexible pleated filter is used as the flexible filter, that a prefilter must be used, and that the flexible filter must be flame-retardant and/or is provided with a flexible frame part.  <P>COPYRIGHT: (C)2004,JPO
Patent JP-2004239732-A (JP)
Title: Inclination angle sensor
Inventor: OSHIUMI KOICHIRO
IPC: G01C9/18
Filed: 2003-02-05
Abstract: <P>PROBLEM TO BE SOLVED: To provide an inclination angle sensor which has performance higher than the conventional case in an arbitrary range in spite of low cost.  <P>SOLUTION: In the inclination angle sensor, the respective elements in at least a pair of impedance elements to which a basic sine wave voltage is applied are arranged in order by at predetermined intervals in a vertical plane. Until condition is changed substantially from a level that one out of a pair of the respective elements is sunk and the other element is almost surfaced to a level that the other element is sunk and the one out of a pair of the respective elements is almost surfaced to magnetic fluid which is accommodated oppositely through a vertical partition so as to be magnetically and mutually acted, crossover angle between arrangement of the respective elements and surface of the magnetic fluid is made changeable corresponding to the inclination of a specimen linked with element arrangement. As a result, the inclination angle sensor is a sensor wherein impedance of the respective elements is changed corresponding to level positional relation with the magnetic fluid, output voltage containing variable component corresponding to the change of the elements is obtained from the respective elements, and the inclination angle in a prescribed range is detected. The magnetic fluid is in a contained space and is moved relatively with a sensor main body according to gravity.  <P>COPYRIGHT: (C)2004,JPO&NCIPI
Patent JP-2004239150-A (JP)
Title: Earth cord
Inventor: NIIMI AKIHIRO
IPC: F02P15/00
Filed: 2003-02-05
Abstract: <P>PROBLEM TO BE SOLVED: To provide an earth cord separately fittable to an exiting plug cord, and generating strong spark discharge by a spark plug.  <P>SOLUTION: This earth cord 100 has a spiral enclosure 101 and a connection body 102. The spiral enclosure 101 is provided with a spiral electric conductor 120 covering a lead portion 31 of a plug cord 30. The connection body 102 is provided with a connecting conductor 140 extending from a spiral electric conductor 120 and an earth terminal 150 fixed to the tip of the connecting conductor 140. By connecting the earth terminal 150 to a ground potential body, the spiral electric conductor 120 is set as a ground potential. This earth cord 100 can be fitted to an existing plug cord.  <P>COPYRIGHT: (C)2004,JPO&NCIPI