baber/WOPTO huggingface dataset:
Patent JP-H10163542-A (JP)
Title: Circuit and method for driving piezoelectric transformer
Inventor: KAWASHIMA SHINGO
IPC: G02F1/133
Filed: 1997-12-05
Abstract: PROBLEM TO BE SOLVED: To prevent the occurrence of abnormal resonance of a piezoelectric transformer by driving a drive circuit which drives the transformer in a frequency range, in which the transformer indicates a high efficiency and which is higher than the frequency at which the load current becomes the maximum and, at the same time, functions to prevent the over-vibration of the transformer without stopping the voltage outputted to the transformer. SOLUTION: A piezoelectric transformer 102 is driven by connecting a drive circuit 101 to the primary electrode 102 of the transformer 102 and amplifying a sweep frequency signal from a frequency sweep oscillator 105 to a waveform required for the drive of the transformer 102. Since the transformer 102 is composed of a tertiary Rosen-type piezoelectric transformer which utilizes resonant operations at a frequency, which is three times as high as the mechanical resonance frequency determined by the shape of the transformer, the occurrence of the abnormal resonance or unnecessary resonance of the transformer can be prevented by limiting the sweeping range of the frequency to <=±20% with respect to the frequency which is three times as high as the fundamental frequency of the transformer 102.
Patent JP-H10165633-A (JP)
Title: Game medium polishing device and game-machine island
Inventor: TAKEMOTO TAKATOSHI
IPC: A63F7/02
Filed: 1996-12-16
Abstract: PROBLEM TO BE SOLVED: To greatly reduce cost by means of a simple constitution, to use space in a game-machine island as effectively as possible, to increase the durability of game media, and to enhance the flow ofthe game media during polishing. SOLUTION: Polishing units 30A, 30B, 30C... are placed in the lower stage of a game-machine island 20 to correspond to pachinko machines 21 and are each constructed of a pair of conveyors 31a, 31b, and thereby costs can be greatly reduced because of simple constitution and savings of the space for the game-machine island 20 can be achieved. Also, excessive polishing of game media is avoided by reducing the length of a conveyor belt 32 and thus the durability of the game media can be enhanced, and since the conveyor belt 32 is placed to slope from the longitudinal center of the game-machine island 20 or of a split game-machine island to each end, the conveyor belt 32 can be inclined at a relatively steep angle, whereby the flow of the game media can be enhanced when they are polished.
Patent JP-2001151252-A (JP)
Title: Sealing cap and its assembly method
Inventor: HANEHIRO SHIGEKI
IPC: B65D51/00
Filed: 1999-11-26
Abstract: PROBLEM TO BE SOLVED: To provide a cap to be easily inserted into an opening of a tank and securely sealing the opening and also provide an assembly method thereof. SOLUTION: A sealing cap 21 to be inserted into an opening 20 of a tank 1 is formed of an elastic material, and constituted of a sealing member 22 with a recess 25 opened in the axial direction and a deformation preventing member 23 to be inserted into the recess 25 of the sealing member 22. A sealing section 24 to be inserted into the opening 20 of the tank 1 and brought into contact with the inner periphery of the opening 20 is formed on the sealing member 22. The recess 25 of the sealing member 22 is formed toward the interior of the tank 1 beyond a sealing section 24. The deformation preventing member 23 preventing the sealing section 24 from being deformed to the side of the recess 25 is inserted into the recess 25 of the sealing member 22.
Patent JP-H08182143-A (JP)
Title: Manufacture of reinforced insulator used for connecting section of power cable
Inventor: TAKAHASHI KATSUHIKO
IPC: H02G1/14
Filed: 1994-12-22
Abstract: PURPOSE: To reduce the electric field impressed in the direction parallel to the boundaries between a reinforced insulator and two rods so that the insulator can be welded to the rods under a wider range of welding conditions by burying high-voltage shield electrodes between the recessed and projecting sections of the two rods and machining the rods after the rods are integrated into one body by welding. CONSTITUTION: After putting burying sections and high-voltage shield electrodes 5 between the projecting and recessed sections of two rods, the rods are integrated into one body by putting the projecting sections in the recessed sections and welding the rods to each other. Then a reinforced insulator 10 is manufactured by machining the integrated rod. This insulator 10 is heated and pressurized after the conductors 12 of power cables 11 are connected. When the insulator 10 is manufactured in such a way, the occurrence of dielectric breakdown which is caused by the boundary is eliminated, because the welded boundary of the two rods forms an angle of 15 deg. to 45 deg. against the direction of electric field and the electric field impressed upon the boundary becomes 26-70% less than the case where the electric field is impressed in the vertical direction.  In addition, the range of the welding conditions of the rods can be widened.
Patent JP-H11152545-A (JP)
Title: Steel wire for heat resistant spring
Inventor: KAWABE NOZOMI
IPC: C22C38/00
Filed: 1997-11-19
Abstract: PROBLEM TO BE SOLVED: To obtain a piano wire for a spring excellent in heat resistance and delayed fracture characteristics by respectively allowing the relations between the residual shearing stress at <= a specified temp. and the temp., between the shearing stress and time and between the delayed fracture generating time and shearing stress of a steel wire for a spring with a pearlitic structure in which the contents of C, Si and Cr are specified to satisfy specified ones. SOLUTION: The compsn. of a steel wire is composed of, by weight, 0.7 to 1.0% C, 0.5 to 1.5% Si and <=0.2% Cr. Further, it is preferable that 0.01 to l.0% Ni or at least either 0.01 to 0.15% Ti or 0.01 to 0.15% V is added thereto. The residual shearing stress γ(%) at <=250 deg.C and temp. A ( deg.C) and the shearing stress B (MPa) and time C (Hr) satisfy the relations in the ineauality I, and the delayed fracture generating time TDF (Hr) and shearing stress τ(MPa) satisfy the relation in the inequality II. Moreover, the ratio of lattice strains of ferrite in the pearlitic structure is preferably regulated to 0.05 to 0.2%.
Patent JP-H08179447-A (JP)
Title: Dichroic mirror holder and fixing method therefor
Inventor: NISHIHARA MASAHIKO
IPC: G03B21/00
Filed: 1994-12-22
Abstract: PURPOSE: To prevent the deterioration of the image resolution of a projected video, the distortion of the video and the occurrence of color slurring due to the distortion of the video, and to improve the image quality of the projected image by fixing the dichroic mirror without deforming the dichroic mirror. CONSTITUTION: As for the dichroic mirror holder for holding the dichroic mirror 2 for a projection type liquid crystal display device, the holder is constituted of a holder main body 11 as a frame body surrounding the dichroic mirror 2 and provided with a step part 11a formed at the inside, and also provided with a projection 11b formed on the prescribed position of the step part and whose leading end has a spherical surface so as to place the dichroic mirror 2, a holding plate 12 attached to the holder main body 11 with leaving a prescribed gap between the plate holding 12 and the dichroic mirror 2 and provided with a through-hole 12a on a position opposite to the projection 11b, and adhesive 13 which is inserted into the through-hole of the holding plate 12 so as to hold the dichroic mirror 2.
Patent JP-2000163741-A (JP)
Title: Apparatus for producing disk substrate
Inventor: KUJI TOMOKO
IPC: C23C16/50
Filed: 1998-11-26
Abstract: PROBLEM TO BE SOLVED: To carry out continuous formation of an underlayer, a magnetic layer and the protective layer by arranging sputtering chambers and the ECR(electron cyclotron resonance)-CVD chamber as well as to form a uniform thin superior protective layer in an ECR-CVD chamber. SOLUTION: A heater 11, sputtering chambers 12, 13 and an ECR-CVD chamber 14 are arranged and a glass substrate 21 is successively fed to these chambers to carry out heating and formation of an underlayer, a magnetic layer and a protective layer. In the ECR-CVD chamber 14, only the glass substrate 21 is kept under negative potential and a thin uniform DLC(diamond-like carbon) film excellent in corrosion and wear resistances is tightly and firmly formed on only the surface of the glass substrate 21. The reaction chamber is kept under ground potential, and even when a film forming material deposits on the inner wall, it sticks in a soft state and is prevented from peeling.
Patent JP-H01176029-A (JP)
Title: Manufacture of high-tensile steel plate with low yield ratio by accelerated cooling method
Inventor: HORIE MASAAKI
IPC: C22C38/00
Filed: 1987-12-28
Abstract: PURPOSE:To provide the desired low yield ratio, high strength, and high toughness by hot-rolling an Nb-containing steel with a specific composition under specific conditions and subjecting the resulting hot-rolled steel plate to accelerated cooling and then to tempering treatment. CONSTITUTION:A steel having a composition consisting of, by weight, 0.03-0.2% C, 0.03-0.5% Si, 0.4-2.3% Mn, 0.01-0.1% Al, 0.1-0.5% Mo, 0.01-0.05% Nb, 0.3-1.5% Ni, and the balance Fe with inevitable impurities is cast. This steel is hot-rolled so that draft in an uncrystallized austenite region and finish rolling-finishing temp. are regulated to >=30% and >=Ar3 point, respectively. Directly after rolling, accelerated cooling is applied from >=Ar3 point down to <=750 deg.C at 2-40 deg.C/sec cooling rate. Then, tempering treatment is applied at 300-700 deg.C. If necessary, one or more kinds among 0.02-0.15% V, 0.3-0.05% Cr, 0.2-1.3% Cu, 0.0003-0.003% B, and 0.005-0.03% Ti are incorporated to the above steel. By using this high-tensile steel plate with low yield ratio, the safety of welding construction can be improved.
Patent JP-H05167961-A (JP)
Title: Projection type television receiver and projection crt
Inventor: YUKIMOTO TOSHITAKA
IPC: H04N5/74
Filed: 1991-12-19
Abstract: PURPOSE:To suppress an irregular reflection of excess light and to improve a projection picture contrast by applying light absorbing material to an area where no electron beam is radiated inside and outside a face plate of a projection CRT. CONSTITUTION:A projection raster of a fluorescent screen 1 of a projection CRT and a part not related to a projection light are masked by light absorbing material 2. Accordingly, among lights which irregularly reflect in a projection optical system and return to the fluorescent screen 1 without affecting the fluorescent screen 1 causing light emitting by radiation of the electron beam, an excess light which returns to the outside of the effective area of the fluorescent screen 1 and enters the optical system can be cut. In the NTSC broadcasting system, the radiation raster ratio is 3:4 and the aspect ratio of the face plate 21 of the projection CRT 20 is also 3:4. The real projection raster is not projected perpendicular to the projection screen in terms of red and blue, having different shape. Thus, the masking effect is increased with the wide ineffective area of the fluorescent screen 1.
Patent JP-H10187070-A (JP)
Title: Multi-layer color variable type slide signboard
Inventor: RI EIKAI
IPC: G09F13/32
Filed: 1996-12-17
Abstract: PROBLEM TO BE SOLVED: To make it possible to manufacture an attractive signboard with lamp, rich in coloration, lively moving sense, and stereoscopic effect at a relatively low cost, by making use of a colored glass, a mirror, and a heat reflection glass, and giving motions and stereoscopic effect to projected characters and figures. SOLUTION: By installing a light bulb 3 for a source of light, a belt-form color cellophane paper 2, a mirror 4 with figures of characters and symbols cut out of it, and heat reflection glass 5 in a box of a main body 8, circulating the belt form color cellophane paper 2, and rocking the mirror back and forth, it is possible to project characters and figures while changing in color, being multi-layered, and moving up and down. In this case, the light bulb 3 is installed in the main body 8 first, and then the belt form color cellophane paper 2, the mirror 4, and the heat reflection glass 5 are sequentially assembled in this order. And, the color cellophane paper 2 is driven by a motor 1. The motor 1 drives to circulate the multi-colored belt-form cellophane paper 2 along the outer periphery of the main body 8.  The light variously changing in color passes through the mirror 4 and projects characters and figures desired to be advertised on the heat reflection glass 5.
Patent JP-H04204772-A (JP)
Title: Image forming device
Inventor: HASEGAWA TAKASHI
IPC: G03G15/00
Filed: 1990-11-30
Abstract: PURPOSE:To prevent peeling off, and oblique advancement of a transfer material and a transfer failure by almost equalizing the difference of the surface potential of the transfer material just before/after it passes a station regardless of an operating mode, on a first station which forms an image determined by the operating mode. CONSTITUTION:For the stations Pa-Pd which forms the first image, constitution is adopted so that the output of attracting electrification and/or the output of a transfer electrification are/is changed so that the difference of the surface potential of the transfer material before/after it passes the stations Pa-Pd, is almost equalized regardless of the operating mode. Therefore, the transfer material P is always and excellently attracted to a transfer material carrying means regardless of the volume resistant value of the transfer material carrying means used (especially, the volume resistant value at 10<10>-10<15>OMEGA.cm). Thus, the peeling off, oblique carriage, etc., of the transfer material P are prevented, and the occurrence of the transfer failure is prevented, as well. Further, even if a large number of sheets are consecutively copied, a high-definition and -quality transfer image is always obtained, without occurring a failure in attracting and a transfer.
Patent JP-H11168918-A (JP)
Title: Elevator for forming device
Inventor: YASUDA MAKOTO
IPC: A01C11/02
Filed: 1997-12-08
Abstract: PROBLEM TO BE SOLVED: To provide the subject elevator having an elevating structure designed to elevate a transplanting device through the intermediary of a quadruplet link mechanism by a contracting action of an elevating cylinder, wherein the quadruplet link mechanism is scarcely subjected to any rolling movement even when any horizontal force is applied thereto. SOLUTION: This elevator is designed to elevate a transplanting device through the intermediary of a quadruplet link mechanism 11 by a contracting action of an elevating cylinder 12, wherein mounting fulcrums of a pair of right-and-left upper links 13 of the quadruplet link mechanism 11 are swingably and connectably fixed to the respective horizontally outer positions of the right- and-left brackets 33.
Patent JP-H0747108-A (JP)
Title: Urease inhibitor and deodorant
Inventor: MIZUNO TAKASHI
IPC: A61L9/01
Filed: 1993-12-28
Abstract: PURPOSE:To prevent the generation of ammonia from urea with a strong urease inhibiting activity. CONSTITUTION:A urease inhibitor prepared by containing at least one selected from the group of NF-86I, NF-86II, NPF-86IA, NPF-86IB, NPF-86IIA and NPF-86IIB as effective component, a urease inhibitor containing a hydrophilic solvent extract of betel palm as effective component, and deodorant containing at least one selected from the group of NF-86I, NF-86II, NPF-86IA, NPF-861B, NPF-86IIA and NPF-86IIB as effective component, a deodorant containing a hydrophilic solvent extract of betel palm and a deodorant containing a coarsely crushed matter or a powder of betel palm as effective component.
Patent JP-H04204720-A (JP)
Title: Wavelength conversion element
Inventor: CHIKUMA KIYOBUMI
IPC: G02F1/37
Filed: 1990-11-30
Abstract: PURPOSE:To enhance coupling efficiency by providing a resin exit end face of a sufficient size in the transparent resin part enclosing the fiber type wavelength conversion element in such a manner that all the second harmonic wave light rays are radiated from the exit end face. CONSTITUTION:This element consists of a second harmonic wave generating element SHG consisting of a circular cylindrical core 10 consisting of a nonlinear optical crystal and a cylindrical clad layer 20 concentrically enclosing the core 20 and the resin part 30 enclosing the SHG. The exit end face 32 of the resin part has such a sufficient size that the radiated second harmonic wave light rays are not reflected by the base and side faces of the resin part and that all the second harmonic wave light rays are radiated from the exit end face. Namely, the resin part has the end face 32 including the circle of a radius gamma satisfying gamma=tanthetaX(l+a) around the optical axis of the SHG as a center when the length in the extension direction of the internal SHG is designated as l, the length from the exit end face 22 of the SHG up to the resin exit end face 32 as a and the Cherenkov radiation angle of the SHG as theta. The wavelength conversion efficiency of the coupling light is enhanced in this way.
Patent JP-H05172874-A (JP)
Title: Voltage phase detecting device
Inventor: SHIMOURA TAKUJI
IPC: G01R25/04
Filed: 1991-12-20
Abstract: PURPOSE:To eliminate the influence of higher harmonics when phase difference DELTAthetais small and speedily return the phase difference DELTAtheta to a prescribed value when exceeding the prescribed value. CONSTITUTION:The detected phase theta' is obtained by counting the output pulse of voltage controlled oscillator 10, and the value corresponding to the phase difference DELTAtheta between the ac voltage phase theta and the detected phase theta' is integration-amplified, and the output frequency of the voltage controlled oscillator 10 is controlled, and a phase lock loop PLL is constituted. Means 9A and 12 for varying the loop gain so that the responce time of the phase lock loop becomes short when the phase difference DELTAtheta exceeds a prescribed value are provided.
Patent JP-H04203869-A (JP)
Title: Cleaning device employing fine frozen particle
Inventor: HIROI TAKAHIKO
IPC: F25C1/00
Filed: 1990-11-30
Abstract: PURPOSE:To produce hollow fine frozen particles efficiently and reduce the using amount of refrigerant by a method wherein a mixing vessel, dissolving gas under frozen condition, and a high-pressure tank, pressurizing frozen liquid to a high pressure and cooling it, are provided. CONSTITUTION:Gas is dissolved into frozen liquid such as pure water and the like by the bubbling of the gas such as CO2, O2 and the like in a mixing vessel 9. The frozen liquid is pressurized to the degree of several thousands kg/cm<2> and is cooled by a high pressure tank 10. In this case, the cooling 4s effected to suppress the temperature rise of the frozen liquid which is generated by the pressurization. Next, frozen liquid is sprayed from a sprayer 3 into an ice making unit 1 as fine particles. In this case, molten gas in pulverized frozen liquid (fine liquid drops) is expanded by the fluctuation of a pressure from a high-pressure condition into a normal pressure condition and is cooled. The fine liquid drops are cooled effectively by the cooling due to the molten gas and the cooling due to refrigerant 2 such as liquid nitrogen and the like whereby fine frozen particles 5 of hollow structure can be obtained.
Patent JP-H08245482-A (JP)
Title: Production of beta-keto alcohol kind
Inventor: ANDOREASU BURIYUNGAA
IPC: C07C49/24
Filed: 1995-12-04
Abstract: Prodn. of a beta-keto-polyene alcohol of formula A-CH=CH-A' (Ia) or A'-CH=CH-B-CH=CH-A' (Ib) comprises reaction of a polyene aldehyde of formula A-CHO (IIa) or OHC-B-CHO (IIb) with a cyclocarbonate of formula (III) under basic conditions. A' = CO-CR1R2OH; A, B = opt. substd. conjugated polyene mono- or dialdehyde devoid of terminal CHO gp(s).; R1 = 1-6C alkyl; R2 = 1-6C alkyl or 2-6C alkenyl; or R<1>+R<2> = 1,4-tetramethylene or 1,5-pentamethylene. Beta-keto-polyene alcohols of formula R'-CH=CH-CO-C(CH3)2OH (Ic) and R"-CH=CH-CO-CR11R12OH (Id) are new. R', R" = gp. of formula a), b) or c); R, R4 = H, opt. protected OH or oxo; R5 in (Ic) = protected CHO or 4-hydroxy-4-methyl-3-oxo-1-pentyl; R5 in (Id) = protected CHO or CH=CH-A'; m = 0-4; n = 0 or 1; p, r = 0-2; q = 0-3; cpds. (Ic) are excluded when: i) R' = a), m = 2 or 3, R3 = H or opt. protected oxo, R4 = H and n = 0; ii) R' = a), m = 3, R3 = opt. protected OH, R4 = H or opt. protected oxo and n = 0; iii) R' = b), q = 3, p = 2 and n = 0; and iv) R' = c), r = 2 and n = 0; and cpds. (Id) are excluded when R6 = CH=CH-A' and R1 = R2 = Me.
Patent JP-H07186619-A (JP)
Title: Pneumatic tire
Inventor: TSUNODA TAKASHI
IPC: B60C11/00
Filed: 1993-12-28
Abstract: PURPOSE:To provide a pneumatic tire capable of making coasting traveling noise reduction and noise reduction in acceleration and deceleration compatible with each other. CONSTITUTION:Ribs 16A, 16B, 16C, 16D, 16E are formed by providing circumferential grooves 14 on a tread 12. The ribs 16B and 16D positioned inside the ribs 16A, 16E are made lower by one step, moreover, the rib 16C is made lower by one step. Since frictional force on the tire equatorial surface CL side of the tread 12 to be hardly vibrated in acceleration and deceleration is decreased less than that on the shoulder part 22 side, distortion of rubber of the tread 12 on the tire equatorial surface CL side in acceleration and deceleration is decreased, as this result, frictional sound, namely, noise in acceleration and deceleration is decreased. Moreover, since noise in acceleration and deceleration can be decrease without increasing stiffness of the ribs, coasting traveling noise is not increased.
Patent JP-H08185591-A (JP)
Title: Absolute encoder
Inventor: TAKIGUCHI HIROSHI
IPC: H03M1/24
Filed: 1994-12-27
Abstract: PURPOSE: To provide an absolute encoder which performs bit serial communication with communication formats adapted to many kinds of external devices without increasing the number of kinds of products and automatically sets the communication format adapted to an external device. CONSTITUTION: A communication format adapted to a connected external device 11 is selected from communication formats, which are stored in an interface circuit 8 in an encoder control unit 4, based on the communication format discrimination signal inputted from the external device 11.
Patent JP-H03201489-A (JP)
Title: Semiconductor photodetective element
Inventor: SHIRAI TATSUAKI
IPC: H01L31/107
Filed: 1989-12-28
Abstract: PURPOSE:To lessen a light absorbing layer in electrical field intensity so as to improve it in response speed holding down an avalanche multiplication by a method wherein an N<+>-type InGaAs layer is interposed between an N-type InGaAs light absorbing layer and an N-type InGaAsP intermediate layer formed on an InP substrate. CONSTITUTION:A high concentration N<+> InGaAs layer 3 is interposed between an N-type InGaAs light absorbing layer 2 and an N-type InGaAsP intermediate layer 4. As mentioned above, when the N<+> InGaAs layer 3 is interposed, an electrical field is sharply decreased in intensity at the part where the layer 3 is interposed, so that an electrical field applied to the N-type InGaAs light absorbing layer 2 is made to decrease in intensity. In result, an avalanche multiplication is restrained from occurring in the N-type InGaAs light absorbing layer 2 and a semiconductor photodetective element of this design can be enhanced in response speed.