baber/WOPTO huggingface dataset:
Patent JP-H04187897-A (JP)
Title: Backup system in case of abnormality of dry-gas seal
Inventor: TANAKA YOICHI
IPC: F04D29/10
Filed: 1990-11-21
Abstract: PURPOSE:To prevent the leakage of gas inside a system into the atmosphere by providing a chamber that is normally totally-closed between a vent line and an air-sealing air chamber, and at the time of abnormality by charging the chamber with purge gas whose pressure is higher than that in this chamber. CONSTITUTION:The leakage of the gas inside a compressor from a dry-seal 1 is prevented by charging a buffer gas 2 whose pressure is higher than that in the compressor. To prevent the oil inside a bearing 11 from flowing into the dry-gas seal 1, instrumental air for air-sealing is charged into a chamber 13. A chamber 15 is provided between the chamber 13 and the vent line 6 of the dry-seal 1, and this is connected to a safe nitrogen gas line 18. Normally a solenoid valve 19 is closed, and at the time of abnormality it is opened to introduce nitrogen gas whose pressure is higher than the gas pressure inside the system, and the dangerous gas leaked from the dry-gas seal is discharged to a safe place through the vent line 6. Thus, a safe and secure system can be obtained at a low cost.
Patent JP-2000116138-A (JP)
Title: Inverter device
Inventor: NAKAZAWA IKUO
IPC: H05B41/24
Filed: 1998-09-30
Abstract: PROBLEM TO BE SOLVED: To operate an inverter device with a high power factor by providing a switching circuit for receiving a rectification power supply voltage across a pair of first and second switching elements in series in a forward direction. SOLUTION: The device comprises a rectification power supply 10 of the voltage of an AC power supply 11 and a pair of first switching element 21 and second switching element 22 in series in a forward direction, and is provided with a switching circuit for receiving the voltage of the rectification power supply 10 and a flywheel diode 31 that is connected in parallel with the first switching element 21 inversely across them. Also, it is provided with an inductive load 40, a large-capacity capacitor 50 that is connected to a position astride the first switching element 21 and the inductive load 40, and a small-capacity capacitor 49 that is connected in parallel with the inductive load 4.  Then, the switching element 21 and 22 and the flywheel diode 31 are turned on in the order of the elements 21, 22, 31, and 21 but power is fed from the rectification power supply 10 while the second switching element 22 is on and its conduction angle is expanded, thus achieving a high power factor and hence obtaining an inverter device with a high power factor.
Patent JP-2001132675-A (JP)
Title: Two-stage compression type rotary compressor and two- stage compression refrigerating device
Inventor: EBARA TOSHIYUKI
IPC: F25B7/00
Filed: 1999-11-04
Abstract: PROBLEM TO BE SOLVED: To provide a two-stage compression type rotary compressor with improved theoretical efficiency by about 30 to 40% of one-stage compression in a cryogenic refrigerating cycle. SOLUTION: This two-stage compression type rotary compressor 10 to arranges and houses an electric motor 14 in an upper part in a sealed vessel 12 using a bottom part as a lubricating oil reservoir, and arranges and houses a rotary compression mechanism 18 driven by a crankshaft 16 of this electric motor 14 in a lower part. The rotary compression mechanism 18 includes a first compression element 32 for performing low-stage compression of a first stage and a second compression element 34 for performing high-stage compression of a second stage.  The volumes of respective upper and lower compression spaces formed of upper and lower cylinders 38, 40 for constituting the respective compression elements 32, 34 and upper and lower rollers 46 48 for eccentrically rotating in these upper and lower cylinders 38, 40, are set in a prescribed range below 60% in the evaporation temperature range of (-) 70 deg.C to (-) 50 deg.C so that the displacement volume ratio (V2/V1) of the high-stage compression displacement volume V2 of a second stage to the low-stage compression displacement volume V1 of a first stage becomes below 40%.
Patent JP-H03129774-A (JP)
Title: Semiconductor device and manufacture thereof
Inventor: MOMOSE HISAYO
IPC: H01L21/8238
Filed: 1989-12-05
Abstract: PURPOSE:To enhance breakdown strength of gate and to prevent lowering of mobility of carrier by specifying the concentration of nitrogen atom in the vicinity of interface between a gate insulating film and a semiconductor layer. CONSTITUTION:In a semiconductor device comprising gate electrodes 54, 55 formed on a semiconductor layer of one conductivity through a gate insulating film 43 and source.drain regions of reverse conductivity formed at the opposite sides of the gate electrode, the gate insulating film 43 is formed such that the concentration of nitrogen atom in the vicinity of the interface to the semiconductor layer is equal to or higher than 1atom.% while lower than 10atom.%. Preferably, the oxide film 43 is as thick as a gate oxide film 42 or thinner than half of the thickness of the gate oxide film 42. It is because a thick oxide film 43 causes considerable deformation of the gate electrode to provide a bird beak below the electrode, whereas a thinner gate oxide film 43 can not feed sufficient nitrogen into an oxide film below the gate electrode. Upon finish of oxide film forming process, heating with lamp is carried out for 60sec at a temperature of 1050 deg.C in an environment containing such gas as ammonia, which contains nitrogen atoms, thus forming an after oxide film 44 containing nitrogen.
Patent JP-H07141660-A (JP)
Title: Optical disk device
Inventor: INOGUCHI TATSUYA
IPC: G11B7/0045
Filed: 1993-11-19
Abstract: PURPOSE:To set the optimum light quantity range of a light beam in the test region within a PCA at every disk change in a region where a power source is closed, then to finely adjust this light quantity to the optimum within a program region. CONSTITUTION:A session 1 has a reading region 3 and a reading out region 4 before and after one program region 2. This program region 2 is divided to tracks of the number of data. The divided tracks 5 are composed of regions 7 of index '00' and regions of index '01'. The region 6 plays the role of a discriptor for identifying the tracks 5 and the region 7 is a user region composed of a packet 8 and includes a link region 9, a line region 10, a runout region 11 and a user data region 12. The limitation on the number of adjustment times is eliminated by executing trail writing in the user region and adjusting the light quantity of the light beam.
Patent JP-H06165585-A (JP)
Title: Power converter
Inventor: MOSE TADAO
IPC: H02P5/00
Filed: 1992-11-25
Abstract: PURPOSE:To allow bearing of load commensurable with the characteristics of propeller over the entire speed range of an electric propulsion vessel employing a variable speed drive system by controlling two propeller speeds and outputs. CONSTITUTION:Two sets of variable speed driving systems, comprising motors 5a, 5b and power converters 6a, 6b, are mounted for one double contrarotating propeller unit 3 thus constituting an electric propulsion system. The motor 5a driving the first propeller of the double contrarotating propeller unit 3 is subjected to rotational speed control according to a rotational speed command for propeller by means of the first power converter 6a. The motor 5b for driving the second propeller rotating reversely to the first propeller is subjected to output control according to a motor output command by means of the second power converter 6b. This constitution allows bearing of load commensurable with the characteristics of the propeller unit 3 over the entire speed range.
Patent JP-H07164445-A (JP)
Title: Lining peeling method
Inventor: ONO KEISHIN
IPC: B29B17/02
Filed: 1993-12-15
Abstract: PURPOSE:To separate and recover a lining material and a steel tube by cooling a lining steel tube to an embrittle temperature or lower, and applying an impact to peel the lining material from the tube. CONSTITUTION:A lining steel tube 1 is introduced into a cooling tank 2 and cooled to an embrittle temperature or lower. The cooled tube 1 is taken out from the tank 2, both the tube 6 and a lining material 7 are crushed by an impact of a hitting unit 5 such as a hammer, etc., and separated from one another to become small pieces. In this case, an indoor temperature measuring thermometer 4 is provided in the tank 2, a refrigerant supply amount is controlled by a temperature regulator 3 in response to a measured temperature output from the thermometer 4, its temperature is regulated to an optimum cooling temperature of the material 7, to be at the embrittle temperature or lower, and they are crushed and separated.
Patent JP-H02166079-A (JP)
Title: Socks holder
Inventor: FUJITA AKIRA
IPC: B65D85/18
Filed: 1988-12-15
Abstract: PURPOSE:To permit the washing, drying and stowing of a pair of socks held in a socks holder in their originally retained condition by composing the socks holder integrally of a connecting part for fixing the tops of two socks-shaped frames set in symmetrical and spaced relation and a netted part for reinforcing the inside of the frames. CONSTITUTION:A socks holder 1 is composed integrally of two socks-shaped frames 1, a connecting part 2 and a netted part 3, each being of synthetic resins. The frames 1 are set in symmetrical and spaced relation and the thickness thereof is to be about 3mm. The connecting part 2 is for fixing the tops of the frames 1 together and, in this example, formed into an inverted U-shape and provided with a hole 7 in its middle to permit a hook to be attached thereto. The netted part 3 is for reinforcing the inside of the frames 1 and has a thickness of about 2mm, thinner than the latter, taking the drying efficiency into consideration.
Patent JP-H07169480-A (JP)
Title: Fuel cell heat utilizing device
Inventor: URATA TATSUO
IPC: H01M8/04
Filed: 1993-12-15
Abstract: PURPOSE:To directly utilize the pressurized hot water of a steam separator and effectively utilize the waste heat of a fuel cell by passing the cooling water in the boiled state which recovers heat in the fuel cell through a waste heat recovering heat exchanger, and then circuiting it to a heat utilizing facility. CONSTITUTION:The cooling water from a steam separator 1 is passed to a fuel cell 3 through a circulating circuit L by a pump 2. The cooling water in the boiled state which recovers heat there is returned to the steam separator 1 after the heat is partially recovered by a waste heat recovering heat exchanger 4, and a steam reforming steam S is separated. In such a fuel cell heat utilizing device, a second circuit L1 for returning the pressurized hot water in the steam separator 1 to the steam separator 1 after passed to a heat utilizing facility 7 by a circulating pump 5 is provided. A third circuit L3 is provided as occasion demands to selectively bypass the heat utilizing facility 7 by a branching means 6 such as a three-way valve. A blow down valve 8 is interposed between the heat utilizing facility 7 and the steam separator 1, and the state of the pressurized hot water is preferably detected by a sensor to control the branching means.
Patent JP-S6439088-A (JP)
Title: Semiconductor laser device
Inventor: HIUGA SUSUMU
IPC: H01S5/40
Filed: 1986-12-25
Abstract: PURPOSE:To increase the breakdown level of the optical end surface of the entire integrated light guides and to obtain high power output, by setting the width of each light guide so that the distribution of an electric field strength in each light guide becomes the same. CONSTITUTION:Three light guides are constituted with three strip grooves 8a-8c, which are formed by etching a semiconductor layer 2. A width w2 of the central light guide is made smaller than widths w1 of the light guides on both ends. This is determined by the equivalent refractive index of each light guide, the equivalent refractive index of a region between the neighboring light guides and oscillating wavelengths. Namely, the distributions of the electric field strength in a fundamental mode have the same peak value in the three light guides comprising the stripe grooves 8a-8c. Therefore, the light outputs from active regions 6a-6c, which are formed in an active layer 5 on all the stripe grooves 8a-8c, are equalized. This fact effectively contributes to the total light output. Thus, the total light output is not restricted by the breakdown level of the optical end surface of the individual light guide, and the high power output is obtained.
Patent JP-H01156649-A (JP)
Title: Biosensor
Inventor: SHIBATA CHOKICHIRO
IPC: G01N25/48
Filed: 1987-12-15
Abstract: PURPOSE:To detect the presence and concn. of a specific chemical material by measuring the temp. rise by the heat generated when the enzyme of an enzyme film reacts with the chemical material. CONSTITUTION:The enzyme film 3 formed by fixing the enzyme which reacts selectively with the specific chemical material thereto by a high polymer is stuck to a temp. sensing chip 2 of a radiation type thermopile for temp. measurement which is installed to a base plate 1 made of ceramics or plastic and is connected with respective electrodes by means of bonding wires 4 to lead lines 5 provided on the substrate 1. The reaction heat generated at the time of the contact of the enzyme immobilized to the enzyme film 3 with the specific chemical material with which said enzyme reacts specifically is detected by the temp. sensing chip 2. The biosensor is so constituted that this heat can be measured with the lead lines 5.
Patent JP-H02277949-A (JP)
Title: Light metal piston for internal combustion engine
Inventor: JIIKUFURIITO MIIRUKE
IPC: F02F3/00
Filed: 1989-12-04
Abstract: PURPOSE: To reduce the weight of a light metal piston for an internal combustion engine by setting back those end faces of its piston pin bosses which face the small end of its connecting rod outward below those segments of the top apex portions of the bosses which spread on both sides of a plane including the piston pin axis and the piston axis and include a specific angle. CONSTITUTION: In the piston so designed that the width of a connecting rod head is 15 to 50% of the diameter of the piston and the diameter and length of a piston pin are 20 to 45% and 50 to 85% of the piston diameter, piston pin bosses 5 are set back outward below those segments of their top apex portions 8 which spread on both sides of a plane including the piston pin axis and the piston axis and include an angle of less than 180 degrees. The above constitution reduces the weight of the piston and ensures sufficient load resistance thereof.
Patent JP-H06162099-A (JP)
Title: Method for discriminating similarity based on view point
Inventor: KASAHARA KANAME
IPC: G06F17/30
Filed: 1992-11-25
Abstract: PURPOSE:To discriminate the similarity based on various view points. CONSTITUTION:When the similarity between plural elements in a database is discriminated on the database where respective plural elements have pairs consisting of the characteristic concept representing the characteristic of element and the degree of importance showing the close relation between the characteristic concept and element, the view point elements having pairs of the characteristic concept specified separately and the degree of importance are referred to discriminate whether or not the characteristic concept related to the characteristic concept for each characteristic concept of the similarity discrimination object element is included in the view point element. The modulation element which emphasizes the value of the degree of importance companions to the characteristic concept in the element for each similarity discrimination object element by using the value of the degree of importance which companions to the related characteristic concept in the view point element is generated, discriminating the similarity between modulation elements.
Patent JP-H06165158-A (JP)
Title: Forecast coding circuit
Inventor: WADA TORU
IPC: H04N19/61
Filed: 1992-11-25
Abstract: PURPOSE:To improve the accuracy of motion detection and to share a part of a circuit. CONSTITUTION:This forecast coding circuit is provided with a forecast data determining means 60 for selecting any one of two forecast error data prepared based upon reference frame data and forecast data using current frame data relating to an inputted current frame. The means 60 has motion detection accuracy improving means 70 for reevaluating forecast error data constituted of reference frame data including a motion vector and forecast error data constituted of reference frame data including no motion vector, selecting either one of the forecast error data and outputting highly accurate forecast error data and an output determining means 80 for selectively outputting the forecast error data selected by the means 70 and forecast data constituted of current frame data. A comparing output from a comparator 75 controls both of the 1st and 3rd selectors 76, 82 in common.
Patent JP-H07168422-A (JP)
Title: Image forming device
Inventor: HAYAKAWA NAOSHI
IPC: G03G21/10
Filed: 1993-12-15
Abstract: PURPOSE:To prevent uneven electrostatic charging from being caused by the streaky staining of the surface of an electrostatic charging roller without damaging the surface of the electrostatic charging roller nor necessitating the adjustment of the abutting pressure of a cleaning member. CONSTITUTION:A brush member 13 is set at the position opposite to the electrostatic charging roller 11 and a distance between the brush member 13 and the roller 11 is decided in a state where the middle part of the fibrous substance of the brush member 13 comes in contact with the surface of the roller 11. The fibrous substance is constituted of an electric insulating material. The length of the nap of the fibrous substance is set to 2.5 times as long as a distance from the base part to the surface of the roller 11. The outside of the brush member 13 is surrounded by a easing on three sides. The brush member is rocked.
Patent JP-S63165995-A (JP)
Inventor: NAKAKAWAJI MIKIO
IPC: G07G1/12
Filed: 1986-12-26
Abstract: (57)【要約】本公報は電子出願前の出願データであるた め要約のデータは記録されません。
Patent JP-H02161816-A (JP)
Title: Interface circuit
Inventor: MATSUO KENJI
IPC: H03K19/003
Filed: 1988-12-14
Abstract: PURPOSE:To improve the working reliability of an interface circuit by keeping the circuit threshold value at a fixed level regardless of the fluctuation of the base-emitter voltage of a bipolar transistor TR. CONSTITUTION:The npn TR Q11 and Q12 are equally affected by the fluctuation of the manufacturing conditions. Thus the base-emitter voltage of the TR Q11 rises up with the rise of the base-emitter voltage of the TR Q12. In the same way, the base-emitter voltage of the TR Q11 drops with the drop of the base- emitter voltage of the TR Q12. The potential of a node N11 is dependent on the base-emitter voltage level of the TR Q11. Thus the potential of the node N11 rises up with the rise of the base-emitter voltage of the TR Q12 and vice versa. Thus it is possible to keep the threshold voltage at a fixed level regardless of the fluctuation of the base-emitter voltage ae long as the potential of the node N11 is corrected against the fluctuation of the base-emitter voltage of the TR Q12. As a result, the working reliability is improved for an interface circuit.
Patent JP-H11150640-A (JP)
Title: Image sensor and its production and original reader
Inventor: MATSUMOTO TOSHIRO
IPC: H04N1/031
Filed: 1997-11-18
Abstract: PROBLEM TO BE SOLVED: To eliminate the foreign matters out of a through hole with high efficiency by receiving the light that is irradiated from a light source and reflected on an original, storing the light source and a photodetector in a part which is enclosed by plural wall surfaces, drilling a through hole on at least one of those wall surfaces and preparing a blocking means that blocks removably the through hole. SOLUTION: The upper end of a through hole 20 is located almost to touch the under surface of a glass plate 6 with the lower end located almost to touch the upper surface of a sensor substrate respectively. Then both side ends or the hole 20 have the same contours as the inner surface of a frame 7. A frame end face part 7a has a hole that pierces through the inside and outside of the frame 7, so that the foreign matters can be eliminated out of the hole of the part 7a by means of a pair of tweezers or chopsticks, a wire, etc., without disassembling this image sensor even when a defective state is decided due to the foreign matters contained in the frame 7 in a check process after the sensor is assembled.
Patent JP-H09131232-A (JP)
Title: Earthquake-proof chest drawer device
Inventor: MASAI KENICHI
IPC: A47B88/00
Filed: 1995-11-08
Abstract: PROBLEM TO BE SOLVED: To easily open and close, to make a drawer hardly fall out from a chest main body even when a chest is tiled to a drawer opening/closing side or swung to a drawer opening/closing direction at the time of an earthquake or the like, to be safe against an unexpected situation such as the earthquake that much, to extremely reduce the danger that the drawer falls out even without a lock at the time of carrying and moving the chest, to carry and move the chest that much safely and to provide a device at a low cost with a simple structure even though such merits are present. SOLUTION: This chest drawer device is provided with the drawer insertion part 2 of the chest main body 101 and the drawer 1 capable of being freely put in/out of it by a drawer guiding device 4. Then, a movable engaging member 13 provided with a tilted lower surface 131 is provided on the lower surface of the bottom plate member 11 of the drawer 1 and a fixed engaging member 23 positioned so as to be engaged to the front end engaging surface 132 of the member 13 by making the movable engaging member 13 run onto it by the tilted lower surface 131 and then lowering it when the drawer 1 is housed at the prescribed position in the drawer insertion part 2 is provided.
Patent JP-H06139500-A (JP)
Title: Inter-car distance controller
Inventor: OKAYAMA TOMIHIKO
IPC: G01S17/93
Filed: 1992-10-29
Abstract: PURPOSE:To constitute the inter-car distance controller so that inter-car distances of plural vehicles can be controlled. CONSTITUTION:A light emitter 19 is constituted of a light source driver 9 and a light emission diode 8, and a photodetector 18 is constituted of an optical filter 7, a photodetecting optical system 6, an optical fiber 10, an optical amplifier 1, a photosensor 2 and amplifier 3. In such a state, since a signal inputted to the photodetecting optical system 6 is amplified directly by the optical amplifier 1, there is no malfunction caused by an electromagnetid noise, and also, since a distance operation by light intensity is executed, there is an effect for obtaining the inter-car distance controller which does not cause a malfunction even by a meterological condition.
Patent JP-2001128793-A (JP)
Title: Footrest for chair
Inventor: IGARASHI RYO
IPC: A47C16/02
Filed: 1999-11-05
Abstract: PROBLEM TO BE SOLVED: To provide a footrest wherein an angle adjustment can be performed in a plurality of steps, and at the same time, the operation is facilitated. SOLUTION: This footrest has a forward tilted section 3, which tilts forward downward, at the upper section. At the same time, at the rear section of a fixed frame 8, of which the upper section is set on a floor, the rear section of a rotatable frame 11, on the upper surface of which, a cushioning material 21 is fixed, is pivotally attached in a manner to be rotatable around a shaft facing in the lateral direction. Then, an angle-adjusting metal fitting 18, which can hold the rotatable frame 11 at predetermined locations from the forward- downward location to the horizontal location, is provided between the fixed frame 8 and the rotatable frame 11 so that the rotatable frame 11 can be rotated between the forward-downward location tilting forward-downward, and the horizontal location being almost horizontal.