baber/WOPTO huggingface dataset:
Patent JP-S6230636-A (JP)
Title: Vitrification of optical fiber preform
Inventor: KIKUCHI TAKEYUKI
IPC: C03B20/00
Filed: 1985-07-30
Abstract: PURPOSE:To form a clad layer having uniform thickness long the length on the circumference of a porous preform, easily, by preheating a Ge-doped porous glass preform, adjusting the shrinkage, and vitrifying in an oxygen-free atmosphere containing a chloride, thereby dissipating Ge from the outer circumference of the preform. CONSTITUTION:A porous glass preform 3 synthesized by VAD process is inserted into a quartz core tube 5 surrounded by a resistance heating furnace 4. The preheating of the preform 3 is carried out cautiously preventing the vitrification of the preform until the preform shrinks to a density of 0.1-0.7 based on the density of vitrified preform. The shrunk preform 3 is heated and vitrified to transparent glass at about 1,400 deg.C with the furnace 4 in the furnace core tube 5 containing an oxygen-free atmosphere containing He and a chloride such as SOCl2. The dehydration of the preform can be carried out sufficiently, and at the same time, a distinct clad layer having uniform thickness along the length is formed at the outer circumference of the preform, and a vitrified optical fiber preform is produced.
Patent JP-S6325982-A (JP)
Title: Pressure transducer and manufacture thereof
Inventor: MURAKAMI KOICHI
IPC: G01L9/00
Filed: 1986-07-18
Abstract: PURPOSE:To facilitate the manufacture of pressure transducers having reference pressure chambers in a large quantity at the same time in batch processing of Si wafers and to implement a low cost, by forming a pressure detecting part such as a diaphragm on the surface of each substrate, and forming the reference pressure chamber at the same time. CONSTITUTION:A lower insulating layer 23 is formed on the surface of a high impurity concentration diffused region 22. A spacer region 24 is formed thereon so as to surround a cavity region 25. The cavity region 25 becomes a reference pressure chamber (vacuum). A diaphragm 31 is composed of an upper insulating layer 26, an upper electrode 28 and a surface insulating layer 29. The diaphragm 31 is displaced in correspondence with applied external pressure. When the diaphragm 31 is displaced in correspondence with the external pressure, electrostatic capacitance is changed. Since the cavity region has the structure of a pressure transducer, which detects absolute pressure, another vacuum chamber for reference pressure is not required. The packaging is simplified to a large extent.
Patent JP-H0218468-A (JP)
Title: Antifouling and algicidal coating
Inventor: FUKUOKA HIROYUKI
IPC: C09D5/14
Filed: 1988-07-06
Abstract: PURPOSE:To obtain the subject coating capable of preventing aquatic organism and algae from sticking to materials, such as fishing nets for culture, installed in water for a long period by containing an oxybisphenoxyarsine and tetrachlorisophthalonitrile in an acrylic resin coating. CONSTITUTION:The objective coating obtained by containing preferably 0.002-0.006pt.wt. 10,10'-oxybisphenoxyarsine and preferably 0.03-0.10pt.wt. tetrachloroisophthalonitrile in 10pts.wt. acrylic resin coating.
Patent JP-H0370797-A (JP)
Title: Water-resistant grease composition
Inventor: HARII SUCHIYUWAATO PINKU
IPC: C10M169/06
Filed: 1990-06-26
Abstract: A grease composition having improved water resistance is disclosed. More specifically, the addition of an ethylene copolymer having an amine functionality to a base grease comprising a lubricating oil and a water insoluble thickener results in a grease composition which has enhanced water resistance relative to a grease containing an ethylene copolymer without amine functionality.
Patent JP-2000355272-A (JP)
Title: Brake device of tractor
Inventor: OCHI TOMOFUMI
IPC: B60T7/04
Filed: 1999-06-15
Abstract: PROBLEM TO BE SOLVED: To switch a connected/unconnected state of left/right brake pedals without stopping travel by putting the left/right brake pedals in an unconnected state when an electric means is put into an ON-state, and putting the left/right brake padals in a connected state when the electric means is put into an OFF- state. SOLUTION: When turning on a brake pedal connecting changeover switch, an electric current flows to a connecting solenoid, a connecting pin 15a contracts, left/right brake pedals 13a, 13b are put into an unconnected state, and when turning off the brake pedal connecting changeover switch, the electric current does not flow to the connecting solenoid, and the connecting pin 15a extends to connect the left/right brake pedals 13a, 13b. Thus, when switching a connected/unconnected state of the left/right brake pedals 13a, 13b, the state can be switched without stopping travel by simple operation only by turning on and off the, brake pedal connecting changeover switch.
Patent JP-H0336240-A (JP)
Title: Stainless steel having excellent hot workability
Inventor: KOMATSU TAKASHI
IPC: C22C38/00
Filed: 1989-07-01
Abstract: PURPOSE:To manufacture a stainless steel plate having excellent hot workability by extremely reducing the content of S in an austenitic stainless steel contg. a specified amt. of delta ferrite and incorporating Y and at least one kind among La, Ce and Ca thereto. CONSTITUTION:An austenitic stainless steel contg., by weight, <0.08% C, <1.0% Si and 15 to 30% Cr, in which the content of S is regulated to <=0.0015% and contg. 0.01 to 0.15% Y or, furthermore, one or more kinds among <0.1% La, <0.1% Ce and <0.015% Ca, in the total of <=0.15%, as well as having the amt. of delta ferrite, 10 to 30%, in the starting stage of hot rolling is subjected to hot rolling to work into a plate material. A hot coil of the nondefectable stainless steel plate having excellent hot workability and free from the generation of ear cracks or the like in the stage of hot rolling can be obtd.
Patent JP-H0218716-A (JP)
Title: Optical information recording medium
Inventor: KAWASE TAKEO
IPC: G11B7/24091
Filed: 1988-07-05
Abstract: PURPOSE:To decrease the fluctuation in percentage modulation even if a prepit signal is reproduced without applying track servo thereto and to facilitate information reproduction by forming prepit arrays at the pitch smaller than the specific size of the pitch of the prepit arrays to be reproduced by applying the tracking servo thereto. CONSTITUTION:The prepits to provide modulation to the intensity of reflected light or transmitted light is provided to form the prepit arrays where the prepits line up in the scanning direction of focused light. The region where the prepit arrays line up at the specified pitch is provided and the region where the prepit arrays line up at the pitch <=7/10 the pitch is provided. The fluctuation in the amplitude of the prepit signal reproduced without applying the track servo to the control area of the optical disk is substantially eliminated and the value of the percentage modulation is controlled to the specified value. The information is thus effectively reproduced.
Patent JP-S6144674-A (JP)
Title: Thermotransfer-type printer
Inventor: SHIMOMURA SHINZO
IPC: B41J17/38
Filed: 1984-08-10
Abstract: PURPOSE:To erase a negative image remaining in an ink film for transfer after printing and applying ink for reuse by passing an ink film for transfer after printing between a heat-resistant platen and an impregnated ink roller in a friction-causing condition. CONSTITUTION:An ink film for transfer 1 is set in a different feed direction by a support for separator 8 after printing. Then the film 1 is peeled off a paper to be transferred 2 and then is fed as it is held between an impregnated ink roll 6 and a heat-resistant platen 5. The impregnated ink roll 6 and the heat-resistant platen 5 are rotated at slightly lower speed than the paper feed speed of a platen 3 for printing to cause friction between the ink film for transfer 1 and the impregnated ink roll 6.
Patent JP-2000001728-A (JP)
Title: Seamless copper alloy tube for heat exchanger excellent in 0.2% proof stress and fatigue strength
Inventor: SUDO YUICHIRO
IPC: C22C9/00
Filed: 1998-06-16
Abstract: PROBLEM TO BE SOLVED: To obtain excellent fatigue strength and 0.2% proof stress in an alloy tube by forming it of a copper alloy obtd. by adding Co to phosphorus deoxidized copper by an amt. of a specified range, the content of P is adjusted to a specified range, and the content of oxygen as impurities is adjusted to specified value or below. SOLUTION: This seamless copper alloy tube for a heat exchanger is composed of a copper alloy having a compsn. contg., by weight, 0.02 to 0.2% Co, 0.01 to 0.05% P, and the balance Cu with inevitable impurities, in which the content of oxygen included as the inevitable impurities is adjusted to <=50 ppm. Moreover, the compsn. may contain 1 to 20 ppm C. In the case phosphorus deoxidized copper contains Co alone, its 0.2% proof stress and fatigue strength are remarkably improved, and the electric conductivity thereof is improved as well. In the case C is added jointly with the addition of Co, its 0.2% proof stress and fatigue strength are moreover improved. As the content of P, 0.015 to 0.04% is more preferable, and the content of oxygen included as impurities is more preferably adjusted to <=10 ppm.
Patent JP-S5959806-A (JP)
Title: Sintered tungsten body
Inventor: OGURA SHINICHI
IPC: B22F3/18
Filed: 1982-09-29
Abstract: PURPOSE:To increase the yield of working by prescribing the specific gravity of a sintered body and the size of the constituent grains of the sintered body. CONSTITUTION:A sintered tungsten body is manufactured by a powder metallurgical method. The specific gravity of the sintered body is regulated to >=90% of the true density, and the number of constituent grains of the sintered body per 1mm.<2> cross-section is regulated to 1,500-8,000. The sintered tungsten body is suitable for rolling, and it does not cause cracking and breaking, so the yield of working is improved.
Patent JP-2000011329-A (JP)
Title: Magneto-resistance effect type magnetic head and its production
Inventor: INAGUMA TERUYUKI
IPC: G11B5/39
Filed: 1998-06-16
Abstract: PROBLEM TO BE SOLVED: To suppress the variation or the like of thickness of an under layer gap film to enable to exhibit excellent reproducing property by providing polycrystalline ferrite substrates to be a pair of magnetic shield members, film- forming a soft magnetic film on the surface opposed to an upper part shield member on the polycrystalline ferrite substrate and forming an inter-shield gap on the soft magnetic film. SOLUTION: A magneto-resistance effect type magnetic head (MR head) 1 is provided with the 1st substrate 3, on which the soft magnetic film 2 is film-formed and which is composed of the polycrystalline ferrite film, the under layer gap film 4 film formed on the soft magnetic film 2, a magneto-resistance effect element 5 formed on the under layer gap film 4, the upper layer gap film 6 film formed on the magneto-resistance effect element 5 and constituting the inter-shield gap with the under layer gap film 4 and the 2nd substrate 7 jointed on the upper layer gap film 6. The soft magnetic film 2 absorbs the projecting and recessed parts on the surface caused by circular openings on the 1st substrate 3. As a result, the variation or the like of the thickness of the under layer gap film 4 of the MR head 1 is reduced.
Patent JP-S6060267-A (JP)
Title: Injectiion pressure measuring device for unit injector
Inventor: TANIGUCHI HIROYUKI
IPC: F02M57/02
Filed: 1983-09-12
Abstract: PURPOSE:To permit to measure a valve opening pressure without dismantling the unit injector by a method wherein the unit injector is mounted to the mounting table for nozzle and a pressurizing device, carrying operating oil and provided with a pressure meter, is fixed above the table rotatably into horizontal direction. CONSTITUTION:The unit injector A to be tested is mounted on the mounting table 5 for nozzle by a cramp 35, a barrel housing 8 is turned to engeage with support columns 1, 2 and nuts 11 are tightened. When a plunger 13 is pushed down by a lever 30, a follwer plunger 21 is pushed down to communicate a spill port 20 with a pressurizing chamber. When the indicating needle of the pressure meter is risen gradually and the pressure arrives at the valve opening pressure, the indicating needle descends. A shim 36 for the injector is exchanged so that the valve opening pressure shows a specified pressure. According to this method, the valve opening pressure of the unit injector may be measured one by one without dismantling them and, further, the unit injector may be exchanged simply.
Patent JP-H0929709-A (JP)
Title: Chain stopping device for motor-operated chain saw
Inventor: MIZUTANI MAKOTO
IPC: B23D57/02
Filed: 1995-07-04
Abstract: PROBLEM TO BE SOLVED: To provide a chain stopping device for a motor-operated chain saw capable of being rapidly stopped in the rotation of a chain at the time of a trigger OFF position. SOLUTION: The motor-operated chain saw 10 has a chain stopping mechanism 40 to be operated by a solenoid SL. The solenoid SL is operated when a trigger lever 15 is returned to an OFF position, and braking by the mechanism 40 is executed. The mechanism 40 has a brake shoe 41 capable of being engaged with or disengaged from the inside surface of a brake drum, a triple elastic member 43 for supporting the shoe 41, an oscillatory lever 45 for sliding the member 43, and a clutch 50 disengaged by being pressed down by the other two arms 43b, 43b of the member 43.
Patent JP-H1023368-A (JP)
Title: Video reproducing device and base band memory device
Inventor: SHIGA TOMOHISA
IPC: H04N5/92
Filed: 1996-06-28
Abstract: PROBLEM TO BE SOLVED: To provide a video reproducing device for operating a field exchanging processing, and operating proper video data reproduction corresponding to a demanded arbitrary reproducing speed and arbitrary reproducing direction. SOLUTION: Each frame of inputted video data is alternately recorded in a bank A and a bank B constituted of a first frame memory 21 and a second frame memory 22 in a base band memory part 18. At that time, the first field is recorded in an even field area, and the second field is recorded in an odd field area. At the time of variable speed reproduction at ×1/2 variable speed, the odd field areas are continuously read twice, and then the odd field areas are continuously read twice based on a field operational sequence recorded in an RAM 33. Thus, output video data in which the same frames are continued by two each, and the fields are lined up like the even field/even field/odd field/ odd field can be obtained.
Patent JP-H0728026-A (JP)
Title: Color liquid crystal display device
Inventor: NISHIDA YASUFUMI
IPC: G02F1/133
Filed: 1993-07-08
Abstract: PURPOSE:To make it possible to sufficiently enhancing the brightness of display and to change the display color of each one pixel to respectively plural colors by coloring transmitted light without using a color filter and increasing transmittance of light. CONSTITUTION:This color liquid crystal display device is constituted by arranging a pair of polarizing plates 31, 32 so as to hold a dot matrix liquid crystal cell 20 therebetween and installing a phase difference plate 30 between the liquid crystal cell 20 and the upper polarizing plate by shifting its delay axis diagonally at a prescribed angle with the transmission axis of the upper polarizing plate 31. The device has a liquid crystal display 10 which is changed in the display colors of the parts corresponding to the respective pixel parts of the liquid crystal cell 20 to the plural colors according to voltages applied to the pixel parts and a display driving circuit 40 for applying a driving voltage to selectively display the respective plural colors in the respective pixel parts of the liquid crystal cell 20.
Patent JP-2000074171-A (JP)
Title: Actuator
Inventor: NAGAI SHIGEKAZU
IPC: F16H25/24
Filed: 1999-06-15
Abstract: PROBLEM TO BE SOLVED: To provide an actuator which need not a lubricating oil for its feed screw, can establish reduced dust, etc., and less noise emission, and can transport works, etc., stably. SOLUTION: A feed screw 36 is provided with spiral male threads 58a and 58b in double start form, and magnetic poles 60a and 60b are formed at the crests of these male threads 58a and 58b, while magnetic poles 62a and 62b are formed at the bottoms. Female threads 68a and 68b are formed in a displacing member 66, and magnetic poles 70a and 70b are formed at the bottoms of the female threads 68a and 68b, while magnetic poles 72a and 72b are formed at the crests. According to this configuration, the magnetic poles 60a, 60b, 62a, 62b on the feed screw 36 make repulsion to the magnetic poles 70a, 70b, 72a, 72b on the displacing member 66 so that the feed screw 36 and displacing member 66 are held without contact.
Patent JP-2000026262-A (JP)
Title: Inorganic ultraviolet filter dispersion
Inventor: KURZ THEKLA
IPC: A61Q5/06
Filed: 1999-06-16
Abstract: PROBLEM TO BE SOLVED: To obtain the subject dispersion capable of securing the free selection of an oil useful in producing a composition, useful for a sunscreen by dispersing a specific inorganic ultraviolet filter into a liquid ultraviolet filter. SOLUTION: This dispersion is obtained by dispersing (B) an inorganic ultraviolet filter (preferably pulverized titanium dioxide, zinc oxide, cerium oxide or iron oxide) into (A) a liquid ultraviolet filter (preferably an octocrylene compound, an octyl methoxycinnamate compound, a homo salicylate compound or the like). Preferably the dispersion further contains (C) a gel forming agent (e.g. an oil-dispersible builder, etc., Bentones, aerosol, etc.), or a dispersion auxiliary and the content of the component B is 5-80%.
Patent JP-H06118925-A (JP)
Title: Video data converting processor and information processor with video data converting device
Inventor: NAKAMOTO MAKOTO
IPC: H04N5/44
Filed: 1993-07-08
Abstract: PURPOSE:To provide the video data converting processor which can generate a television signal with superior display performance from video data in various development format through single hardware. CONSTITUTION:An issuing means 8 issues an indication for setting video data out to a VRAM corresponding to a period prescribed by the ratio of the numbers of lines of the video data to be converted and a television signal and plural buffer means 3 cyclically latch the video data from the VRAM, line by line. A generating means 4 multiplies the video data, latched by the buffer means 3, by an interpolation coefficient indicating the development format of the video data in synchronism with the horizontal synchronizing signal of the television signal and adds their multiplication values to generate a television signal.
Patent JP-H0221088-A (JP)
Title: Laying method of water bottom submarine plastic gas supply pipe
Inventor: HANAMI KOSAKU
IPC: F16L1/12
Filed: 1988-07-07
Abstract: PURPOSE:To efficiently lay a plastic gas supply pipe on the specified bottom of the water by burying or mooring the gas pipe dragging a hollow cylindrical dead-weight in the axial direction of the pipe with the winch installed on a laying boat. CONSTITUTION:A coiled plastic gas supply pipe 1 is sunk at the bottom 4 of the water through the hollow section of a hollow cylindrical dead-weight 3 from a laying boat 2. The boat 2 performs the burying 6 of the gas supply pipe to lay it on the specified bottom of the water feeding it and dragging the dead-weight 3 in the direction of the extension of the pipe by the winch 5 installed on the laying boat 2. If the plastic gas supply pipe is enough soft to be coiled around a drum like a coiled cable, the plastic gas supply pipe is laid in the same way that a cable laying boat performs.
Patent JP-H0456946-A (JP)
Title: Light quantity control method for image forming device
Inventor: SAWAI YUJI
IPC: G03B27/73
Filed: 1990-06-26
Abstract: PURPOSE:To improve development efficiency by computing an impression voltage in accordance with a selected step by using a function which regulates relation between the impression voltage impressed to a light source and a light quantity projected on an image carrier at that time, and controlling the impression voltage based on a computed result. CONSTITUTION:When an up button (+)25a and a down button (-)25b for color density adjustment provided at an operating part 25 are operated and a selection step is changed, the impression voltage to an illumination lamp 2 and the correction quantity of the light quantity in a fourth step read out from a register in a RAM 23 are computed, and the computed result is stored in the register of the RAM 23. Thence, the correction quantity in accordance with the step selected by the buttons 25a and 25b for color density adjustment is read out from the register at every irradiation of an original, and the impression voltage added on a reference impression voltage is outputted to a lamp power source 2 as an output signal. Thereby, it is possible to improve the development efficiency of an image forming device without necessitating experiment to find all the impression voltages to the illumination lamp 2 in each step.
Patent JP-2000027779-A (JP)
Title: Screw rotor and processing method therefor
Inventor: TSURU SEIJI
IPC: F04C29/00
Filed: 1999-06-16
Abstract: PROBLEM TO BE SOLVED: To effectively prevent generation of rust of a rotor by performing primer coating for a lobe of a screw rotor, uniformly applying a coating agent of tetrafluoroethylene perfluoroalkyl vinyl ether copolymer after drying and burning the coating and drying and burning the coating agent. SOLUTION: After a screw rotor lobe 3 of a dry screw compressor is machined into a prescribed dimensional shape, heating degrease is performed. Next, after the lobe 3 is cooled up to a temperature within a working chamber, shot blast processing is performed by alumina and a coating surface is made rough. After a cleaning, primer coating constituted of PFA(tetrafluoroethylene perfluoroalkyl vinyl ether copolymer) molecule and binder, pigment or the like is performed. After this primer is dried, temporary firing is performed, cooling is performed and a PFA coating processing is performed. After the PFA is dried, this PFA is burned. After cool and discharge, film thickness is measured and the PFA coating processing is repeatingly performed up to necessary film thickness.
Patent JP-S6149911-A (JP)
Title: High turn down ratio low nox combustion device
Inventor: MORITA SHIGEKI
IPC: F23C99/00
Filed: 1984-08-15
Abstract: PURPOSE:To enable a proper flame structure to be always formed and to always decrease an amount of NOx produced irrespective of the load of a combustion load, by a method wherein a feed system of fuel to plural burners forms 2 or more systems in which a flow rate is independently controllable, and an air feed system forms 2 or more systems in which O2 concentration is independently controllable. CONSTITUTION:A gas ged line 30 to each burner throat is regulated by a valve 110, a branch directly connected to each burner is branched into 2 systems 31 and 32, and flow rate is controlled by means of valves 111 and 110. Oxygen concentration of airs 52 and 53 and movement counts of the airs 52 and 53 fed to a burner throat are regulated by air regulating dampers 211 and 212. A control system forms plural systems, and this enables increasing of a turn down ratio of each burner body, enables effective prevention of production of thermal NOx through decrease of a maximum flame temperature at the outer periphery of flame, and permits formation of an optimum flame structure irrespective of a fluctuation in a load.