baber/WOPTO huggingface dataset:
Patent JP-H038135-A (JP)
Title: Optical pickup
Inventor: SHIOZAKI HIROSHI
IPC: G02B27/10
Filed: 1989-06-05
Abstract: PURPOSE:To make the numerical aperture of a laser beam small by a reflection and to reduce the influence of an aberration caused by an objective lens by forming the reflecting surface of a beam splitter by a recessed hyperboloid and positioning a light emission center point of a laser in a focus of the hyperboloid. CONSTITUTION:A beam splitter 7 consists of a recessed hyperboloid 7a and a spherical transmission source 7b, condenses a reflected light from an optical disk D and forms an image in a photodetector 6. When a light emission center point 1a of a semiconductor laser 1 is positioned in a focus F1, a beam is reflected by the surface 7a, a production of an optical path passes through other focus F2 and a virtual image is formed. Subsequently, a beam numerical aperture NA1 becomes a small numerical aperture NA2 by the surface 7a and made incident on an objective lens 4. Accordingly, even if a value of the numerical aperture NA1 becomes large, a value of NA2 can be suppressed. In such a way, even if the numerical aperture becomes large and an S/N ratio is improved, the influence of an aberration caused by the objective lens can be reduced.
Patent JP-S627952-A (JP)
Title: Study control device for internal-combustion engine
Inventor: TOMIZAWA NAOMI
IPC: F02D41/00
Filed: 1985-07-02
Abstract: PURPOSE:To prevent the variation of control condition in the neighborhood of boundary of each region in which a study correction amount is stored, by carrying out judgement for the scanned operating condition in such a way as provided with hysteresis with respect to the direction of the operating condition changing. CONSTITUTION:In a control unit 30 the engine operating condition is stored the study correction amount capable of rewriting in a plurality of regions partitioned according to such parameters as the basic fuel injection amount and the number of engine revolutions from a crank angle sensor 17. In scanning the study correction amount, the direction of change of the parameters for engine operating conditions is judged, and thereafter the location of the grid axis to partition the operating region in which the study correction amount when the parameters are changing in one direction shall be different from when they are changing in opposite direction. This will prevent hunting of the control amount because of a step of study correction amount scanned from the adjoining operating regions while the current condition lies near the grid axis.
Patent JP-H04343073-A (JP)
Title: Simplified system for monitoring voltage
Inventor: KOBAKO MASAHIKO
IPC: G01R19/00
Filed: 1991-05-20
Abstract: PURPOSE:To obtain a simplified system for monitoring voltage which monitors the voltage in a simple manner. CONSTITUTION:A processor 6 has a voltage monitoring processing means. When started, the voltage monitoring processing means conducts a processing of closing a switching means 5. When the switching means 5 is closed, the charge of a capacitor C is discharged. After the discharge is completed, the voltage monitoring processing means conducts, a processing of opening the switching means 5, while it starts time counting. A time count value at the time point when the output of a comparator 3 is switched over from one level to the other is stored, and a voltage at a voltage measuring point is determined by using this time count value.
Patent JP-H0718618-A (JP)
Title: Artificial lawn
Inventor: TANAKA NOBUHIRO
IPC: E01C13/00
Filed: 1993-06-15
Abstract: PURPOSE:To obtain an artifical lawn which is simple in structure and has a connecting structure with a high connecting strength. CONSTITUTION:A notch C is provided in a projecting part 41 of a connecting member 4 fitted in a connecting hole 3 provided on the edge of a rectangular base part 1, and a beam for dividing the notch part of the projecting part 41 is disposed in the connecting hole 3. The forward end side of the projecting part 41 is curved and expanded only by fitting the projecting part of the connecting member in the connecting hole, so that the strength of the connecting part can be increased by its anchor effect.
Patent JP-H072497-A (JP)
Title: Cargo handling hydraulic control device
Inventor: NARUSE YASUHIKO
IPC: B66F9/22
Filed: 1993-06-15
Abstract: PURPOSE:To surely stop a fork without giving a shock to the fork by decelerating the fork from a position in accordance with its moving speed. CONSTITUTION:A potentiometer 2 for detecting an operating amount of a cargo handling lever is connected to the cargo handling lever 1 provided in a driver's seat of a forklift. The potentiometer 2 is connected to a controller 3. A fork 5 is liftably provided in the forklift, and a lift height sensor 7 for detecting a lift position of the fork is connected to the controller 3. That is, in the controller 3, based on a detection signal from the lift height sensor 7, a lift speed of the fork 5 is calculated, to also set a shockless start position relating to a predetermined stop position of the fork 5 based on the lift speed, and after passing through the shockless start position, a speed of the fork 5 is gradually decelerated to stop the fork 5 in its stop position.
Patent JP-S6122211-A (JP)
Title: Optical encoder
Inventor: KOUSAKA MASATSUNE
IPC: G01D5/34
Filed: 1984-07-10
Abstract: PURPOSE:To realize high resolving capacity easily by installing a driving unit responsible for deviating a range of the specified angles on a scaled disk plate and an optical axis of a light-receiving unit and interpolating a width of a slit of the scaled disk plate in response to deviation driving and light-receiving signals. CONSTITUTION:Revolutions of a rotary circular disk 2 above the specefied r.p.m. interfers an optical axis of a light irradiating and receiving unit 10 with a slit on the rotary circular disk 2, producing thus square wave signals after reforming by a level coverter 12. Detection 15 of pulse lengths, emission of a short H for a high r.p.m. operating gate 13 and controlling to a duty ratio of 50% with an equilibrium detecting circuit 17, an output of resolving capapcity is obtained from output ends O-1 in response to a slit width. When the plate 2 speed slows down, the pulse length detecting circuit issues out L and a movable light interruptor 4 is deviated front and rear in a vibrating manner through a driving unit 11. The light receiving element 9 outputs a phase determined by a width of deviation to close an analog-switch 14 to outputs an interpolating signal from a phase comparing circuit 18. Thus, a high resolving capacity can be kept, even at the low r.p.m.
Patent JP-S5667418-A (JP)
Title: Moving body control system
Inventor: ASAI YASUO
IPC: G05D13/62
Filed: 1979-11-06
Abstract: PURPOSE: To execute the control stably without step-out of the control system, by detecting that something abnormal has occurred, and not using the phase difference of its phase as a phase difference data, in case when abnormality such as omission of a pulse, mixing of a noise, etc. has occurred in a position input signal.  
     CONSTITUTION: A position signal input and a control output signal are provided in phase to the phase difference detection part 3, the detection part 3 calculates the phase difference data TPNU and TPND at every rise and breaking of a pulse of the phase which is input, and store them in the phase difference data buffer 7. On the other hand, the abnormal signal detection part 6 checks whether an abnormal input pulse exists or not, and stores the check result corresponding to the phase difference data in the phase difference data discriminator 8. The phase difference data from this discriminator 8, and the number D of abnormal input data are read by the phase correction value operation part 9, and the phase correction value TP' is calculated and output. Since this correction value TP' does not use the phase difference of the phase in which something abnormal has occurred, as a phase difference data, the control can be executed stably without step-out of the control system. 
     COPYRIGHT: (C)1981,JPO&Japio
Patent JP-S5770149-A (JP)
Title: Resin composition
Inventor: NISHIZAKI KATSUMI
IPC: C08L51/00
Filed: 1980-10-17
Abstract: PURPOSE: To provide a resin compsn. having excellent transparency, by blending a methyacrylate ester (co)polymer with a non-rigid vinyl chloride graft copolymer.  
     CONSTITUTION: A resin compsn. consists of 100pts.wt. non-rigid vinyl chloride graft copolymer (A) and 0.5W50pts.wt. methyarylate ester polymer or copolymer (B) composed mainly of a methacrylate ester such methyl methacrylate, said copolymer (A) being obtd. by polymerizng 85W30pts.wt. vinyl chloride monomer or monomer mixture composed mainly of vinyl chloride monomer in the presence of 15W70pts.wt. ethylene-vinyl acetate copolymer having an thylene component content of 35W75wt%. The problem of insufficient transparency of component A can be simply and economically dissolved by blending component B. 
     COPYRIGHT: (C)1982,JPO&Japio
Patent JP-H0438859-A (JP)
Title: Electronic component assembly structure and assembly method
Inventor: NEMOTO KIYOKO
IPC: H01L21/52
Filed: 1990-06-04
Abstract: PURPOSE:To join pellets on a board with a uniform space by allowing a spacer to be present between the board and an electronic component and injecting a liquefied bonding substance into a vacant space where both are held in parallel space. CONSTITUTION:In a lead frame which comprises a plurality of leads 1 and a tab. A projection 4 is installed to the surface of the tab 2 so that it may serve as a spacer. The projection 4 as the spacer is designed to hold pellets in parallel on a board and a plurality of projections 4 are installed in a space kept around the tab respectively. A bonding agent contained in a cylinder 12 is arranged to drop sufficiently to the surface of the tab surrounded by the projections. Then, a semiconductor pellet 3 is laminated on the tab 3. These semiconductor pellets are laminated by turning downward the sides where no circuit device or electrode pads are formed. When the pallets 3 are depressed until they come into contact with the spacer, the bonding agent extends between the pellets and the board in uniform thickness, leaving no space between them, and solidified, thereby completing the connection.
Patent JP-H0813649-A (JP)
Title: Entrance wall structure
Inventor: OKUDA MAKOTO
IPC: E04B1/348
Filed: 1994-06-27
Abstract: PURPOSE:To improve outward appearance by fixing a suspended wall panel consisting of an external suspended wall panel and an internal suspended wall panel onto an upper section between left and right wing wall panels. CONSTITUTION:External-wall surface materials 32 are fixed onto the external surfaces of left and right wall frameworks 31 respectively, thus forming left and right wing wall panels 30. External suspended wall panels 50, in which external wall surface materials 52 are fastened onto the external surfaces of wall frameworks 51, are arranged between wing wall panels 30, and the wall frameworks 51 are mounted on the wall frameworks 31 by bolt-nut sets 73. Internal suspended wall panels 60, in which inwall surface materials 62 and mounting materials 61 are fastened by rivets, are disposed between the external wall panels 30, and the mounting materials 61 are installed onto the wall frameworks 31 by bolt-nut sets 76. Inwall surface materials 77 are set up onto the wall frameworks 31 by set screws 78.
Patent JP-S5768107-A (JP)
Title: Electrode imparted with corrosion resistance
Inventor: YAMAMOTO TOSHINORI
IPC: B01D61/46
Filed: 1980-10-17
Abstract: PURPOSE: To extend service life by coating the surfaces which do not act practically and circumferential edge parts other than an active electrode surface with a resin having corrosion resistance such as polytetrafluoroethylene, polyhexafluoroethylene or the like.  
     CONSTITUTION: A resin having corrosion resistance is coated on a surface of electrode base metal of, for example, titanium and electrode circumferential edge parts which are not plated with an active component, such as, for example, platinum. Polytetrafluoroethylene, polyethylene, etc. are used for said resin. Such electrode has corrosion resistance and extended service life. 
     COPYRIGHT: (C)1982,JPO&Japio
Patent JP-S6123954-A (JP)
Title: Nmr imaging device
Inventor: TAKEDA RYUSABURO
IPC: G01R33/48
Filed: 1984-07-12
Abstract: PURPOSE:To project an optional tomographic image accurately by calculating a necessary tomographic plane direction and the distance from the center of an inclined magnetic field to the tomographic plane from three-dimensional information which specifies the tomographic plane, and controlling an inclined magnetic field producing device and the distance from the center of the inclined magnetic field to the tomographic plane. CONSTITUTION:An electromagnet 2 driven by a power source 1 for a static magnetic field produces the static magnetic field, and a compuer 14 drives a power source 11 for inclined magnetic field control through D/A converters 8-10 for X-axial, Y- axial, and Z-axial inclined magnetic field control to establish an inclined magnetic field by an inclined magnetic field coil 7. Further, the computer 14 controls a transmitter receiver 5 to place the sliding position of an object 4 in a high-frequency magnetic field by a transmitting and receiving coil 3. The signal of an induced nuclear spin is received by the coil 3 and inputted to the computer 14 through the transmitter receiver 5 and an A/D converter 6. The computer 14 calculates the tomographic plane direction and the distance from th center of the inclined magnetic field to the tomographic plane which are required to obtain an optional tomographic plane image from three-dimensional information, and controls the power source 11 on the basis of the calculation result to project the optional tomographic image on a CRT12 accurately.
Patent JP-H10330245-A (JP)
Title: Cosmetic and pharmaceutical compound of retinoid and polyamine polymer
Inventor: NGUYEN QUANG LAN
IPC: A61K8/00
Filed: 1998-05-26
Abstract: PROBLEM TO BE SOLVED: To obtain a cosmetic compound that is useful for cosmetic and dermatological compositions stable to deterioration, particularly thermal deterioration by adding a combination of a specific retinoid as a base with a specific polyamine polymer. SOLUTION: This compound is composed of a combination of a retinoid selected from vitamin A (or retinol) and its precursors convertible to vitamin A with a polyamine polymer selected from (A) polyalkylenepolyamine or its derivatives, (B) poly(vinylimidazole), (C) poly(vinylpyridine), (p) an adduct of 1-vinylimidazole monomer of the formula (R is H, an alkyl; n is 1-3) to the polyalkylene polyamine (A), (E) a polymer based on amino acids bearing basic side chains and (F) the crosslinked derivatives of polymers (A)-(E). The amount of the retinoid is 0.0001-10 wt.% based on the whole weight of the composition, while the polyamine polymer is 0.001-20 wt.%.
Patent JP-H01315289-A (JP)
Title: Power conversion device
Inventor: YOKOI OSAMU
IPC: H02P27/06
Filed: 1988-06-14
Abstract: PURPOSE:To prevent an excess current from flowing through a power conversion device when a momentary power interruption time is short by delaying the start of detecting the rotating speed of an AC motor by delay means when the momentary power interruption is recovered. CONSTITUTION:A delay circuit 9 delays a recovery detection signal output from a voltage detector 6 when the momentary power interruption is recovered, and delays the start of detecting the rotating speed of a rotating speed detecting calculator 7. Since the detection of the rotating speed is not conducted during the secondary functional reduction of the rotating speed due to the influence of windage of an AC motor by the circuit 9, the calculator 7 can accurately predict the frequency at the time of power horseplay by a linear approximating calculation. Thus, an AC motor 5 can be restarted without supplying an excess power to the motor 5 and a power conversion device 1.
Patent JP-H0440263-A (JP)
Title: Formation of resin coating film
Inventor: MASUDA TAKASHI
IPC: B05D1/12
Filed: 1990-06-01
Abstract: PURPOSE:To form a coating film excellent in transparency on a metal material by coating the metal material with powder paint containing a specific polyolefin resin and subsequently applying precooling and final cooling to the coated metal material in succession. CONSTITUTION:A metal material is coated with paint containing a polyolefin resin wherein an m.p. is 70 deg.C or higher and a melt index is 1 - 100g/10 min and subsequently subjected to precooling and final cooling to form a coating film of resin. Precooling is a natural cooling process lowering the temp. of the coating film after powder coating to the temp. range from the softening point of the resin to temp. lower by about 40 deg.C than the softening point and usually carried out by allowing the coated metal material to stand in air. Final cooling is a rapid cooling process after precooling and usually carried out by forcible cooling and this cooling method is not especially limited but dipping in cooling water is pref. from the aspect of economical efficiency, safety and operability.
Patent JP-S5269583-A (JP)
Title: Manufacture of insulation gate type semiconductor device
Inventor: ITOU TATSU
IPC: H01L29/78
Filed: 1975-12-08
Abstract: PURPOSE: After selective etching performed for formation od impurity diffusion window at source and drain sections, the eaves-like area of growind gate electrode is etched and removed using etching method of low etching directivity.  As a result, the gate breakage of MOS.  IC os Si gate structure can be avoided. 
     COPYRIGHT: (C)1977,JPO&Japio
Patent JP-S6125626-A (JP)
Title: Detection of leaking-in of light component gas in centrifugal separation cascade of gas
Inventor: HAYAKAWA KATSUYUKI
IPC: B01D59/20
Filed: 1984-07-12
Abstract: PURPOSE:To detect the presence or absence of leaking-in of light component gas to a cascade simply and surely by detecting characteristic pressure change phenomenon that accompanies leaking-in of light component gas into the cascade. CONSTITUTION:Pressure gauges 13 and 23 are provided in feed header pipings 12 and 22 of uppermost and lowermos steps of the cascade. The pressure change of feed headers of the uppermost and lowermost steps is measured at all times. The leaking-in of light component gas into the cascade is detected by detecting the decrease of pressure of the uppermost step feed header and the increase of pressure of the lowermost step feed header. Consequently, the presence or absence of leaking-in of light component gas into the cascade cab be detected simply and surely and enabled to contribute to regular operation of the cascade and the securing of safety.
Patent JP-S5936531-A (JP)
Title: Stack gas desulfurization process
Inventor: MORI TOSHIKATSU
IPC: B01D53/77
Filed: 1982-08-20
Abstract: PURPOSE:To accelerate the oxidation reaction of SO2 absorbed in an aq. soln. or slurry by using a solid catalyst having water repellency. CONSTITUTION:A hydrophilic catalyst such as activated carbon which is impregnated with a water repelling agent such as a dispersion of polytetrafluoroethylene and is heat treated, carbonized coal which is subjected to the carbonization alone without undergoing an activation treatment, and titania which is treated with polytetrafluoroethylene and is desposited thereon with iron are used as a water repellent catalyst. Waste gas contg. SO2 and O2 is brought into contact with an aq. soln. or slurry in the presence of the water repellent catalyst. The water repellent catalyst may be used in the form of grinding the same to powder and dissolving the powder in an aq. soln. or suspending in a slurry or molding the catalyst and packing the moldings in an absorption tower. Since water is repelled on the surface of the solid catalyst, oxygen arrives easily at the surface even in the aq. soln. or in the slurry, and the oxidation reaction of the absorbed SO2 is accelerated.
Patent JP-H05344559-A (JP)
Title: Inter-zone exchanging system in mobile communication system
Inventor: KITAGAWA MITSUO
IPC: H04B7/26
Filed: 1992-06-05
Abstract: PURPOSE:To execute hand-off processing without using an exclusive line by allowing an unmoved line control station B to receive receiving level information measured by a moved base station B, transmit hand-off determining condition to a line control station A through a false mobile station C and allowing the station A to transmit channel specifying information from the station B to a mobile station concerned. CONSTITUTION:When a mobile station B is separated from a base station C and the receiving level of a receiver C1 is reduced, the base station C allows a line control station B to measure the receiving level of a mobile station B by the image receivers B1, C2 of adjacent base stations. In this case, the receiver C2 close to the mobile station B indicates the maximum receiving level and the station B determines hand off from the station C to the station B and is connected to a line control station A through a false mobile station C and a telephone exchange X. Then a connecting station A specifies the channel of the mobile station B through a false mobile station C and a control station B and the channel of the mobile station B-control station A-control station B-network X-telephone set J is constituted. Consequently hand-off processing can be executed without connecting an exclusive line.
Patent JP-2000276765-A (JP)
Title: Optical semiconductor device, its manufacturing method, and optical recording device
Inventor: TAJIMA NAOYUKI
IPC: G11B7/135
Filed: 1999-05-25
Abstract: PROBLEM TO BE SOLVED: To provide an optical semiconductor device that can avoid the loss of forwardly emitted light beams from a light emitting element and can simplify the production process. SOLUTION: The optical semiconductor device is provided with silicon substrates 30 and 40, which are arranged so that their surfaces are made opposite to each other, and a laser diode 45 which is located on the substrate 40 and emits forwardly emitted light beams L1 to the tip part sides of the substrates 30 and 40. A micromirror is provided on the substrate 40 to reflect external reflected light beams L3, which are made incident from the tip sides, on the substrate 30 side. Moreover, a signal detecting photodiode is provided on the substrate 30 to receive the beams L3 which are reflected by the micromirror.
Patent JP-S6037310-A (JP)
Title: Revetment work
Inventor: KITOU KOUJI
IPC: E02B3/12
Filed: 1983-08-09
Abstract: PURPOSE:To make easier the construction of revetment as well as prevent the degradation of water side by a method in which the water side of an underwater structure is protected by a shell, and the surrounding riverbed of the basal end portion of the shell is covered with a flexible scouring preventive sheet. CONSTITUTION:A scouring preventive sheet 4 of a length of 2-3m is attached along the circumferential direction to the basal end of a shell 3 laid continuously on the water side of an underwater structure 2. A weight 5 consisting of a wire cylinder, etc., is fixed along the edge to the upside of the tip of the sheet 4 by holding it between the steel plate 6 on the downside and an U-bolt 7 on the upside. Afterwards, these are delivered to a given position, the sheet 4 is developed forwards, the first shell 3 is installed on the riverbed, a filling material is packed into the shell 3, and then the second shell 3 is installed adjacently. Even when a recession (f) is formed in the riverbed by scouring, the weight 5 drops and the sheet 4 always covers the riverbed correspondingly to the change of the riverbed.