baber/WOPTO huggingface dataset:
Patent JP-S6345488-A (JP)
Title: Oil-free screw compressor
Inventor: KUBO KAZUO
IPC: F04C29/04
Filed: 1986-08-11
Abstract: PURPOSE:To lower the discharge temperature of an oil-free screw compressor and improve the volume efficiency by supplying the cooled discharged gas into the space part in a rotor chamber in the vicinity of a discharge port or into the discharge port. CONSTITUTION:The gas discharged into a discharge flow passage 7 through the discharge outlet 6 of a discharge port 5 of an oil-free screw compressor is cooled by an after-cooler 8, and then a portion of the gas is supplied into the tooth groove parts 10 of the screw rotors 3 and 4 through a bypass flow passage 9. The low temperature gas which is supplied into the tooth groove part 10 flows into the tooth groove part 10, since each tooth groove part 10 of the screw rotors 3 and 4 has a low pressure, and the temperature of the discharged gas lowers. In this case, the low temperature gas flow has an inertia, and the gas continues to flow for a certain time, even if the pressure in the tooth groove part 10 increases over the pressure in the discharge flow passage 7, and the temperature of the discharged gas is effectively lowered, and the volume efficiency can be improved.
Patent JP-2000081723-A (JP)
Title: Toner, image forming method and device unit
Inventor: KAWAKAMI HIROAKI
IPC: G03G15/08
Filed: 1999-07-02
Abstract: PROBLEM TO BE SOLVED: To obtain a toner which does not cause the increase of fog, the occurrence of cleaning defects and the lowering of transfer efficiency even in use over a long period of time and prevents the lowering of image density and the occurrence of image irregularity even in an environment at low humidity. SOLUTION: The toner has at least toner particles and an additive. The toner particles have 4-9 μm wt. average particle diameter. The additive has 1st superfine hydrophobic silica particles having 100-350 m2/g BET specific surface area treated with a silane, 2nd fine hydrophobic silica particles having 15-80 m2/g BET specific surface area treated with a silicone oil and fine alumina particles having 50-150 m2/g BET specific surface area.
Patent JP-2000019607-A (JP)
Title: Thin camera, package therefor, manufacture thereof and developing processor therefor
Inventor: IWAGAKI MASARU
IPC: G03B17/04
Filed: 1998-07-03
Abstract: PROBLEM TO BE SOLVED: To provide a thin camera specially thin and convenient for portability. SOLUTION: This thin camera is obtained by previously incorporating one sheet film having photosensitivity at a manufacturing stage and provided with a photographing optical system forming an image at the sheet film. Besides, it is provided with an elongating and contracting bellows member 211 connecting between a movable part having the photographing optical system and a camera body 20. Then, the bellows member 211 is made to the state of elongating to a photographing object side at the time of photographing and it is made to the state of contracting at the time of non-photographing.
Patent JP-S6167207-A (JP)
Title: Transformer
Inventor: FURUYA SADAHIRO
IPC: H01F27/24
Filed: 1984-09-10
Abstract: PURPOSE:To achieve a transformer characterized by low leakage flux and low loss and having inexpensive production cost and qualititive stability by a method wherein U-shaped cores are combined with the windows of an EI- shaped or EE-shaped laminated core and are arranged orthogonally with the lamination direction of an I-shaped core thereby to reduce reluctance. CONSTITUTION:U-shaped support cores 13 and 14 are arranged in the window portions 12 of a E+I-shaped core 11 constructed by abutting an E-shaped core 9 and an I-shaped core 10. Then, support cores 13 and 14 are arranged so that the two end faces of them are orthogonal with the I-shaped core 10 and coincident with the window diameter (a) and the window width of the window portion 12 of the E-shaped core 9, thereby to form a rectangle-shaped magnetic path. For the support cores 13 and 14, a material of higher permeability than the E-shaped core 9 and the I-shaped core 10 is chosen, and the quality of the material and the number of laminations may be made variable. Such support cores 13 and 14 can easily be manufactured by punching and bending processes with no material loss and inexpensively, and they prevent an air gap from appearing at the joint where the U-shaped support cores 13 and 14 are abutted against the I-shaped core 10.
Patent JP-H1120575-A (JP)
Title: Back-up electric power source device
Inventor: TOYAMA MASUMI
IPC: B60R16/033
Filed: 1997-06-30
Abstract: PROBLEM TO BE SOLVED: To dispense with resetting of a timepiece, a radio, and the like even if a battery is detached and exchanged, by connecting a plug to be inserted in the cigar lighter socket of an automobile to a back-up electric power source of the same voltage as that of the battery. SOLUTION: When current is carried even if a key is not inserted, at loading a battery 5, current is always carried from the battery 5 to a timepiece, a ratio, and the like 7 through the broken line circuit 6. When the battery 5 is detached, therebefore the plug 3 of a back-up electric power source device 1 is inserted into a cigar lighter socket 9 so as to carry current from the back-up electric power source 2 to devices 7 such as the timepiece and the radio even without inserting the key 4 through two-dot chain line circuit 10, and the devices are maintained in the set condition. Under this condition, the battery 5 is detached, and after the battery 5 is loaded again, the plug 3 is taken out of the cigar lighter socket 9 to return to the ordinary condition.
Patent JP-S6343805-A (JP)
Title: Radial tire for heavy load
Inventor: INOUCHI SOSUKE
IPC: B60C15/06
Filed: 1986-08-11
Abstract: PURPOSE:To prevent the exfoliation of rubber in the turned back part and the both edge parts of the reinforcing layers by arranging the reinforcing layers onto the turned back part and inside of a carcass in which steel cords are arranged in the radial direction so that the specific conditions are satisfied and reducing the repetitive strain of a bead part. CONSTITUTION:In a carcass 4, steel cords are arranged in the radial direction, and the both edges are turned back from the inside to the outside on the periphery of a bead core 3. The first reinforcing layer 5 is formed from steel cords, and said cords are turned back from the outside in the tire axis direction to the tire inside at the above-described turned back part 4A, and the terminal of the turned back part 5A on the outside part of the tire is extended to the position not exceeding the height (d) of the terminal of the turned back part 4A. Further, also the second reinforcing layer 6 is formed from the steel cords, and the terminal edge part 6A is nipped between the turned back part 5B towards the tire inside of the first reinforcing layer 5 and the main body part 4B of the carcass 4, on the tire inside surface of the carcass 4. Each cord of the above-described both reinforcing layers 5 and 6 on the tire inside surface is arranged in the same direction.
Patent JP-S57110503-A (JP)
Title: Caster
Inventor: SEKI ZENJIROU
IPC: B60B33/00
Filed: 1980-12-27
Abstract: PURPOSE: To prevent a mounting member from overturning by constructing a caster body center mounted diagonally with right and left wheels at front and rear sides rotatably on a mounting member such as a baby walker or the like via vertical mounting shafts.  
     CONSTITUTION: Front wheels 4 are mounted at front end left side of a caster body 3. Rear wheels 5 are mounted at the rear end right side. Vertical mounting shafts 2 of a mounting members a are rotatably inserted into axial holes 2 formed at the center of the body. When the front and rear wheels are thus diagonally disposed, one of the front and rear wheels is always disposed outside the lower frame a' at the moving time. Thus, it can prevent the mounting member a from overturning. 
     COPYRIGHT: (C)1982,JPO&Japio
Patent JP-S6250430-A (JP)
Title: Electrode material for spark plug
Inventor: KAGAWA JUNICHI
IPC: C22C19/05
Filed: 1985-08-28
Abstract: PURPOSE:To obtain a material for an electrode having improved oxidation resistance without deteriorating the cold workability by adding a prescribed amount of Al to an Ni-Cr-Fe alloy having a specified composition in which the upper limit of the C content has been restricted so as to improve the cold workability. CONSTITUTION:The oxidation resistance of NCF 600 ('Inconel 600(R)') contg. >=72% Ni, 14-17% Cr, 6-10% Fe, <=0.50% Si, <=1.0% Mn and <=0.01% C can be improved without deteriorating the cold workability by adding 0.05-1.0% Al to the alloy. The oxidation resistance improving effect of Al is recognized by adding >=0.05% Al, and since >=0.5% Al deteriorates the cold workability, 0.05-0.5% Al is added to the alloy when the alloy is used as a material for the central electrode of an ignition plug. When the alloy is used as a material for the outer electrode requiring lower cold workability than the material for the central electrode, >=0.5% Al may be added to the alloy but >=1.0% Al deteriorates the weldability to the main metallic fittings.
Patent JP-S6350581-A (JP)
Inventor: IGARI MASAHIRO
IPC: B29D11/00
Filed: 1986-08-11
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-S6253193-A (JP)
Title: Method of detecting commutation failure in current type inverter
Inventor: AKIMOTO TAKASHI
IPC: H02P27/08
Filed: 1985-08-30
Abstract: PURPOSE:To detect commutation failure at low cost without using an exclusive device by judging the flowing of current through a motor by utilizing a current- vector phase detector and detecting commutation failure by using the result of the decision. CONSTITUTION:When the vector of an AC motor is controlled through an inverter, a detector through which each phase current of the AC motor is changed into bit patterns and the phase of the vector of the currents is detected is required. The flowing of currents from the bit patterns is discriminated, and the result of the discrimination of the flowing of current through a power rectifier is added to the result of the discrimination, thus detecting commutation failure.
Patent JP-S6080773-A (JP)
Title: Circuit for measuring electrical characteristics of variable resistance attenuator
Inventor: HONDA HISASHI
IPC: G01R27/28
Filed: 1983-10-11
Abstract: PURPOSE:To measure input impedance (mismatching attenuation) with high accuracy by inputting the voltage at the input terminal of a variable resistance attenuator via a subtractor circuit to the vertical (or horizontal) axis of an oscilloscope. CONSTITUTION:A subtractor circuit 7 which subtracts 1/2 of the voltage Vo of a constant voltage power source 5 from the voltage Va at the input terminal 1 of a variable resistance attenuator 4 to be measured is provided. The vertical axis at the bright point on the cathode-ray tube of an oscilloscope 8 indicates the input resistance value of the attenuator 4 and the horizontal axis indicates an output voltage Vb. These axis correspond respectively to input impedance (mismatching attenuation) and attenuation, respectively. When the input resistance of the attenuator 4 is equal to the characteristics impedance (in the stage of a matching state), the input terminal voltage Va of the attenuator 4 attains 1/2Vo and the Vc through the circuit 7 is ''0'' volt. The measurement of the mismatching state of the attenuator 4 with high accuracy is easily accomplished by increasing the vertical axis gain of the oscilloscope 8.
Patent JP-H0475007-A (JP)
Title: Optical fiber terminal
Inventor: WATANABE HIROMITSU
IPC: H01S5/00
Filed: 1990-07-18
Abstract: PURPOSE:To obtain an LD module which is less fluctuated in the coupling efficiency of an LD and an optical fiber even against a severe thermal stress and has high reliability by using AuSi solder for fixing and air-tight sealing of the optical fiber into a metallic sleeve. CONSTITUTION:This terminal consists of the optical fiber 1, an optical fiber jacket 2, a pipe 3 for protecting the optical fiber, the metallic sleeve 6, and the AuSi solder 21. Namely, the AuSi solder 21 is used for fixing and air-tight sealing of the optical fiber 1 into the metallic sleeve 6 at the optical fiber terminal for the laser diode (LD) module. The LD module which lessens the creeping of the solder 21 and is eventually less fluctuated in the light output at the fiber end even when subjected to the severe thermal stress is obtd. in this way.
Patent JP-H0533185-A (JP)
Title: Plating device and plating method
Inventor: IZUTSU YASUFUMI
IPC: C25D5/02
Filed: 1991-07-30
Abstract: PURPOSE:To apply electroplating only to the desired parts of a wafer. CONSTITUTION:The wafer 1 which is provided with a barrier metal 2 and a resist film 3 opened only in the parts to be plated on the surface requiring plating is so fixed that this surface faces downward. Plating electrodes 6 to be brought into contact with the barrier metal 2 are built into a plating cell 4. Protective pipes 8 which are movable or have good elasticity are put on the front ends thereof. The wafer 1 and the protective pipes 8 are brought into contact with each other. The plating electrodes 6 and the parts without requiring the plating are hermetically sealed by these protective pipes 8 and resist film 3. The desired parts of the wafer 1 are electroplated while a plating liquid 5 is made to flow out from the edges on the plating cell 4 to the outer side at all times at about the flow rate at which the plating liquid does not turn to the surface without requiring the plating.
Patent JP-H0845519-A (JP)
Title: Fuel cell
Inventor: HORI MICHIO
IPC: H01M8/02
Filed: 1995-07-04
Abstract: PURPOSE:To make the temperature distribution in the plane direction of a unit cell even, so as to reduce the resistance and increase the efficiency, by letting flow an oxidizer gas and a coolant in the opposite directions, in a fuel cell. CONSTITUTION:To cooling plates 14a to 14e, a coolant flows in the direction (the reverse direction) opposite to the flow of an oxidizer shown as Q in unit cell laminate blocks 15a to 15d. By letting flow the coolant and the oxidizer in the opposite directions, both gases absorb the heat from the different directions respectively, and as a result, the temperature distribution in the plane direction of the unit cell is made even. The passage of the coolant is made opposite to the flow of the oxidizer, and at the same time, the thermal conductivity of the coolant is suppressed low in the level to generate no thermal conduction between the oxidizer and the coolant.
Patent JP-H1073769-A (JP)
Title: Observing device with oblique illumination
Inventor: GAERTNER HARTMUT
IPC: A61B90/20
Filed: 1997-07-15
Abstract: PROBLEM TO BE SOLVED: To provide an observing device having as separated oblique illuminating device other than an objective lens being changed in accordance with a focal distance and capable sufficient illumination without a shadow even when an object includes regions of various depths. SOLUTION: This observing device includes an oblique illuminating device 7 separated from an objective lens 5 and changed in accordance with the focal distance other than the objective lens 5. In order to illuminate an object having a large contour shape being variously changed, the oblique illuminating device 7 includes two illuminating optical paths 9, 11 mutually inclined in front of objects 13, 16 to be observed and the mutual inclination of the two illuminating optical paths 9, 11 is determined by the focal distance of the objective lens 5 at every time.
Patent JP-H05202891-A (JP)
Title: Combined fan blade and vane
Inventor: JIYAN KURISUTOFUAA SHIIRINGU
IPC: F01D5/28
Filed: 1992-07-17
Abstract: PURPOSE: To provide a composite-layered blade with reduced delamination. CONSTITUTION: Composite blade tip configurations for preventing delamination at a tip 10 of a composite rotor blade are provided. The blade comprises a plurality of first thin successive layers 20 of a first composite material. The first thin layers are stacked in a predetermined configuration such that the weakest shear plane is positioned towards the blade surface. The first thin layers are joined to each other with a joining material 23. The blade further comprises a plurality of second successive thin layers 21 made of a second composite material having a different modulus of elasticity than that of the first composite material. The second thin layers are stacked on the first layers such that an edge surface 22 of the blade tip is even. The second thin layers are also joined to each other and to the first thin layers with the joining material.  The blade further comprises a cloth fiber protective covering 24 completely enclosing the first and the second thin layers.
Patent JP-H1133494-A (JP)
Title: Method and device for adjusting classification ratio in fluidized-bed classifier
Inventor: YOKOMIZO MASAHIKO
IPC: B07B4/08
Filed: 1997-07-15
Abstract: PROBLEM TO BE SOLVED: To provide the method and device capable of coping with the variations in the charge of coal, dry moisture content and classification conditions with a single classifier at the time of classifying coke-oven coal into fine-powder coal and coarse-grain coal by the use of a fluidized-bed classifier. SOLUTION: A partition plate 6 is inserted into the freeboard 3 of a classifier to divide the space of the freeboard into one main classification compartment 4 and one or two or more auxiliary classification compartments 5, exhaust ducts 7 and 8 are provided respectively at the upper part of the compartment 5, a gas flow controller 10 is furnished at the upper part of the auxiliary classification compartment, and the flow velocity of the gas ascending in the main classification compartment 4 is adjusted by controlling the discharge of the gas from the auxiliary classification compartment 5 to regulate the maximum grain diameter of the fine-powder coal classified.
Patent JP-H106233-A (JP)
Title: Hexagonal spanner
Inventor: ARAYA KEIJI
IPC: B25B13/54
Filed: 1996-06-15
Abstract: PROBLEM TO BE SOLVED: To provide a hexagonal spanner capable of re-setting at a minor angle, compared with a conventional hexagonal spanner which must be re-set at 60deg. SOLUTION: Each end of a hexagonal spanner concerned is bent in L-shape, and they are twisted relative to each other. With a conventional hexagonal spanner, only one L-bent part exists to serve for turning a screw, and it must be put in a place 60deg. turned when re-setting is made, and it was not possible to rotate if the given space is narrow. According to this invention, the two L-bent parts may be used alternately, and turning can be made bit by bit by changing the re-setting angle of rotation. This may be used in combination with an ordinary hexagonal spanner to permit driving a screw bit by bit and tightening.
Patent JP-H1029840-A (JP)
Title: Production of natural fiber reinforced cement composition
Inventor: OHAMA YOSHIHIKO
IPC: C04B16/06
Filed: 1996-07-19
Abstract: PROBLEM TO BE SOLVED: To enhance a strength of natural fibers, to improve a dispersibility of the fibers in a cement compsn. and an adhesiveness to a cement matrix and to obtain a cement compsn. excellent in bendability. SOLUTION: Natural fibers used as a reinforcing material for a cement compsn. are treated with humic acid to improve the dispersibility of the fibers in the cement compsn. and the adhesiveness to the cement matrix as well as to enhance the strength of the fibers themselves. The objective natural fiber reinforced cement compsn. excellent in bendability is produced by using the humic acid treated natural fibers.
Patent JP-H0269343-A (JP)
Title: Dust binder
Inventor: BURIGITSUTE HAAZE
IPC: C04B24/26
Filed: 1989-07-21
Abstract: The dust which is produced in the region of the spray nozzle when concrete is subjected to the dry spraying process can be effectively reduced by adding vinyl alcohol/vinyl acetate copolymers to the concrete mixture. It is regarded as a particular advantage that this addition does not impair the action of solidification accelerators.
Patent JP-H0478109-A (JP)
Title: Composite magnetic core
Inventor: YAMAGUCHI MORIE
IPC: H01F1/34
Filed: 1990-07-20
Abstract: PURPOSE:To reduce magnetic gap, and improve magnetic characteristics, by providing compressed powder core of flat-shaped soft magnetic alloy powder and insulator and a metal outer pipe accommodating said core, orientation the flat surface of the soft magnetic powder in the axial direction of the metal outer pipe, and constituting the soft magnetic alloy powder of specified Fe-Co alloy. CONSTITUTION:Compressed powder core composed of flat-shaped soft magnetic alloy powder and insulator and a metal outer pipe accommodating said core are provided, and the flat surface of the soft magnetic alloy powder is orientated in the axial direction of the outer pipe. The soft magnetic alloy powder is Fe-Co alloy composed of Co higher than or equal to 40wt.% and lower than or equal to 60wt.% and impurities which are inevitably contained, and expressed by a formula. Fe lower than or equal to 5wt.% which constitutes the soft magnetic alloy powder may be replaced by at least one of group IVa, group Va, and group VIa elements in the periodic table, and Mn and Cu. The aspect ratio (ratio of the maximum length of the flat surface to the thickness) of the soft magnetic alloy powder is desirably set equal to or larger than 5.
Patent JP-H0531336-A (JP)
Title: Method for making hollow yarn composite membrane hydrophilic
Inventor: YANASE SATOSHI
IPC: B01D71/68
Filed: 1991-07-31
Abstract: PURPOSE:To enhance the water permeability of a hollow yarn composite membrane by effectively making said membrane hydrophilic by bringing alcohol or an aqueous solution thereof into contact wit the outer surface and/or inner surface of the hollow yarn composite membrane having a sulfonated polymer laminated thereto under pressure. CONSTITUTION:Alcohol or an aqueous solution thereof is brought into contact with the outer surface and/or inner surface of a hollow yarn composite membrane having a sulfonated polymer (e.g. sulfonated polyphenylene ether) laminated thereto under pressure of 1-15kg/cm<2>. As a result, the hollow yarn composite membrane can effectively be made hydrophilic and can be enhanced in its water permeability without lowering the rejection rate of a solute.
Patent JP-H0860388-A (JP)
Title: Filter for nitric acid-hydrofluoric acid stainless steel pickling bath and filtration method
Inventor: IKEDA YOSHITAKA
IPC: B01D39/04
Filed: 1994-08-12
Abstract: PURPOSE: To efficiently remove the sludge in a stainless steel pickling bath by accumulating a filter medium obtained by bundling a chemical fiber resistant to nitric acid and hydrofluoric acid. CONSTITUTION: This filter 5 is a tower provided with a partition plate 6. A globular fibrous body 4 (filter medium) is accumulated on the partition plate 6. A gas exhaust pipe and a pickling bath feed pipe 8 are furnished at the upper part of the tower. A drain pipe 9 is laid at the lower part of the tower, and a backward washing water feed pipe 11, a backward washing water discharge pipe 12 and a treated water discharge pipe 13 are furnished through a three-way joint 10. The filter medium 4 is obtained by bundling a chemical fiber resistant to nitric acid and hydrofluoric acid and accumulated on the partition plate 6. The chemical fiber is of at least one kind selected from a group consisting of polyester, PE, PP and polyninyl chloride. Consequently, the filtered stainless steel pickling bath is reused as such.