baber/WOPTO huggingface dataset:
Patent JP-2000209857-A (JP)
Title: Ringing choke converter having improved turn-on loss
Inventor: SATO MORIO
IPC: H02M3/338
Filed: 1999-01-13
Abstract: PROBLEM TO BE SOLVED: To improve turn-on loss of a ringing choke converter. SOLUTION: In a ringing choke converter where a first capacitor 3 is connected in parallel with a switching element 2, a series circuit of a resistor 7, a second capacitor 12 and an inductor 13 is inserted between the control electrode of the switching element 2 and a positive feedback winding 1b, a third capacitor 14 is connected in parallel with the control electrode of the switching element 2 and a transistor 15 is also connected in parallel with the control electrode of the switching element 2. The transistor 15 is connected with a control circuit for turning the switching element 2 on/off by turning the transistor 15 on thereby discharging the control electrode of the switching element 2.
Patent JP-H08218327-A (JP)
Title: Preventive construction of main-girder lateral buckling to be generated in replacement of floor slab of composite girder with precast floor slab
Inventor: TAKADA MICHIYA
IPC: E01D101/26
Filed: 1995-02-09
Abstract: PURPOSE: To prevent lateral bucking by forming a space of a box-removing section in the main-girder direction, temporarily fixing a precast floor slab with the space as distance between fixed points onto a main girder, and constraining movement in the lateral direction. CONSTITUTION: Several all-screw studs 8 are welded an implanted to the upper flange 1a of a main girder 1, and the screw studs 8 are positioned into the box-removing section 5 of a floor slab 3 placed on the girder. The studs 8 are inserted to a fixed block 9, and the fixed block 9 is installed onto the upper flange 1a of the main girder 1. Flat jacks 10 are inserted among the wall surfaces 5a of the box-removing section 5 and the wall surfaces 9a of the fixed block 9, and the precast floor slab 3 and the main girder 1 are fastened. When the precast floor slab 3 is built completely, the fixed block 9 is removed from the box-removing section 5, concrete is placed into the box-removing section 5, and the main girder 1 and the precast floor slab 3 are composed.  Leaf springs 4 are removed, thus completing operation, in which the floor slab of a composite girder is replaced with the precast floor slab 3.
Patent JP-2000243985-A (JP)
Title: Infrared light guide member
Inventor: MAEYAMA YOSHIFUMI
IPC: H04B10/11
Filed: 1999-02-22
Abstract: PROBLEM TO BE SOLVED: To increase the arrival angle of infrared rays and to reduce the loss of the infrared rays at a time when the infrared rays are incident by a method wherein the front face, which receives the infrared rays, of an infrared light guide member is formed to be a concave curved surface. SOLUTION: The front face of an infrared light guide member 1 is formed to be a concave curved surface 11. In addition, its rear face is formed to be a concave curved surface 12 so that the tip convex part 41 of a photodetector 4 is fitted. Infrared rays S which are emitted from a remote control device are incident on the concave curved surface 11 at the front face of the infrared light guide member 1 so as to be received by the tip convex part 41 of the photodetector 4. In this manner, since the front face is formed as the concave curved surface 11, the arrival angle θ2 of the infrared rays can be increased, and the loss of the infrared rays at a time when they are incident can be reduced.  In addition, since the rear face of the infrared light guide member 1 is formed as the concave curved surface 12 so that the tip convex part 41 of the photodetector 4 can be fitted, the infrared light guide member 1 and the photodetector 4 can be positioned surely when the tip convex part 41 of the photodetector is fitted.
Patent JP-S60189229-A (JP)
Title: Semiconductor device
Inventor: OKUNOYAMA TERU
IPC: C08K3/36
Filed: 1984-03-09
Abstract: PURPOSE:To prevent cracks and voids of a pellet after curing from occurring, by bonding a semiconductor chip and a lead frame with conductive paste mainly containing a thermosetting resin binder, silver powder and an inorganic nonconductive filler. CONSTITUTION:In order to manufacture a semiconductor device, after conductive paste is coated on desired portions of a lead frame, an IC or LSI pellet, etc. is put thereon, and then the paste is heated and curred to bond the pellet and the lead frame. As a thermosetting binder mainly being contained in the conductive paste, any one resin or two or more mixed resins of an epoxy resin, a polyimide resin, a phenol resin and their denaturated resins can be used. As silver powder, any powder such as silver powder, organic silver powder or powder being silver- plated on the surfaces can be used. Silica powder or glass beads, etc. is most appropriate for an inorganic nonconductive filler and the average grain size is 20-40mum. A blending percentage of the inorganic nonconductive filler is 1- 20pts.wt. for total of 100pts.wt. of the thermosetting resin binder and the silver powder.
Patent JP-H04279834-A (JP)
Title: Optical pulse tester
Inventor: IZUMIDA CHIKASHI
IPC: H04B10/524
Filed: 1991-03-08
Abstract: PURPOSE:To solve the complicated constitution of an electric system, and to realize an optical homodyne detection system. CONSTITUTION:The incident rays of a narrow-band semiconductor laser 1 are divided into a main signal ray and a local ray by a coupler 4, and the main signal ray is modulated by two acousto-optical switches (both not shown) and is simultaneously turned into an optical pulse. At that time, since the two acousto-optical switches are modulated by 120MHz to the plus primary side and to the minus primary side respectively, after the back scattered ray of the main signal optical pulse that has been incident on a test optical fiber and the local ray have been synthesized, the signal received by a light-receiving element 7 is turned into a base band signal. Thus, an optical pulse tester by means of optical homodyne detection can be realized.
Patent JP-H07254227-A (JP)
Title: Magnetic disk device using data-surface servo method
Inventor: HASEBE MASAHIRO
IPC: G11B19/02
Filed: 1994-03-15
Abstract: PURPOSE:To increase the capacity of memories furthermore without changing the recording density in the technology for determining the position of a data region on a data surface. CONSTITUTION:For each track of a magnetic disk l, a data surface 1a, which is formed by alternately arranging the regions of servo information containing servo addresses SV and data regions continued from the servo information region, and a means 4, which processes the reading/writing of data for the magnetic disk 1 through a magnetic head 2 and a modulating/demodulating means 3, are provided. The servo address SV is constituted of a cylinder address CA, which instructs a cylinder corresponding to each track, and a sector address SA, which instructs a plurality of sectors partitioned into the circumferential direction of the magnetic disk 1 respectively. The position of the objective data region is determined based on the detection of the servo address. The read/write processing or the data is executed for the determined data region.
Patent JP-H03246349-A (JP)
Title: Engine fuel property decision device
Inventor: SHITANI YUJI
IPC: F02D45/00
Filed: 1990-02-23
Abstract: PURPOSE:To conduct accurately the decision of the volatilization degree of fuel and improve the controllability of an engine, by changing an injection timing that is put into operation against an engine 1 cycle, and deciding the volatilization degree of fuel on the basis of the change of a combustion condition right after this change. CONSTITUTION:During an engine operation, when it is discrimination at an ECU 13 that a volatilizability decision possibility condition plug is 1, a timer is timed, and an elapsing time is measure. And while the elapsing time surpasses a standby time and reaches an injection timing change completion time, the injection of fuel is conducted with an injection timing that is shifted at a predetermined angle advance from a regular injection timing. And the engine revolution number and engine revolution unevenness of this period are successively detected, and means values are respectively calculated, and these calculation outcomes are sought as an engine revolution number and an angle velocity change quantity at the time of an injection timing change. And these values are compared with suitable values at the time of a regular injection timing, and the degree of volatilization is calculated on the basis of their differences.
Patent JP-H11240692-A (JP)
Title: Hoisting device
Inventor: HATSUTORI NAOKI
IPC: B66D3/20
Filed: 1998-02-25
Abstract: PROBLEM TO BE SOLVED: To operate a hoisting device that employs an inverter motor continuously at the same speed even upon some fluctuation in supply voltage or others as long as the load is held constant. SOLUTION: The hoisting device comprises a current sensor 19 fear measuring the current value of an inverter motor 4, a determination part 11 for comparing a measured current value Im measured by the current sensor 19 and a standard current value Is and outputting a rated-speed-operation signal if Im exceeds Is or a high-speed-operation signal if Im is not larger than Is , and a standard value update part 15 for updating, after one load determination, the standard current value Is to (Is +ΔI) if a light-load flag 14 has been set or to (Is -ΔI) if no light-load flag 14 has been set.
Patent JP-S63256345-A (JP)
Inventor: GEIRII II INGURANDAA
IPC: B24B5/01
Filed: 1988-02-26
Abstract: (57)【要約】本公報は電子出願前の出願データであるた め要約のデータは記録されません。
Patent JP-H03245914-A (JP)
Title: Drilling tool
Inventor: NAKAMURA SHINICHI
IPC: B23D77/00
Filed: 1990-02-23
Abstract: PURPOSE:To prevent the working defect such as flaws and cracks by forming a recessed part at the top edge of a wall surface directed in the revolution direction of a groove part which communicates to an outer peripheral cutter, besides the outer peripheral cutter, and forming each preceding cutter at the ridge line part between the top edge flank and a wall surface directed in the revolution direction of the recessed part and in the ridge line part between the wall surface and the second flank, and gradually increasing the diameter of a worked hole. CONSTITUTION:A recessed part 26 is formed at the top edge of a wall surface 21a directed to the revolution direction of an oil pouring groove 21 which communicates to the outer peripheral cutter 22 of a tool body 20. The wall surface 26 directed in the revolution direction of the recessed part 26 is set parallel to the wall surface 21a of the oil pouring groove 21, and each preceding cutter 27, 28 is formed at the ridge line part of the top edge flank 25 and the second flank 24 of each wall surface 26a. Each preceding cutter 27 retreats to the tool basic edge side in comparison with the tool top edge surface, and each preceding cutter 28 retreats to the tool center side in the radial direction in comparison with the outer peripheral cutter 22. Accordingly, the diameter of a ground member is gradually increased in the tool radial direction, accompanied with the feed of the tool. Accordingly, the working defects such as flaws and cracks are not left on the worked surface, and the quality and precision of the worked surface are improved.
Patent JP-S58161319-A (JP)
Title: Manufacture of semiconductor element
Inventor: NANBA ASAKI
IPC: H01L21/283
Filed: 1982-03-19
Abstract: PURPOSE:To prevent the degradation of electric characteristics even when a pin hole is generated in an oxide film by forming an opening to an oxidized insulating layer and forming another insulating layer onto the whole surface. CONSTITUTION:An opening is formed to the silicon oxide film 3 on a semiconductor 2 in order to extract an electrode, and a contact region section is exposed. A pin hole 6 is generated in the silicon oxide film 3 at that time. Another insulating layer (a silicon nitride film) 7 is formed onto the whole surface. Anodic oxidation is executed and the insulating film 7 is changed into a silicon oxide film only in the contact region section, and the silicon oxide film changed is removed through etching. The quality of the insulating film 7 on the pin hole 6 does not change at that time. An aluminum electrode 8 is formed. Accordingly, defective characteristics such as a short circuit are not generated even when the pin hole is formed.
Patent JP-H07254167-A (JP)
Title: Optical recording medium
Inventor: UEMATSU TAKUYA
IPC: G11B7/258
Filed: 1994-03-15
Abstract: PURPOSE:To maintain a low cost without shortening service life or deteriorating reliability by forming a light absorbing layer based on a metal-contg. azo dye represented by a specified chemical formula and a light reflect.ing layer made of a thin Ag or Ag alloy film. CONSTITUTION:When a light absorbing layer, a light reflecting layer and a protective layer are successively laminated on a transparent substrate to obtain an optical recording medium, the light absorbing layer is based on a metal-contg. azo dye represented by the formula and the light reflecting layer is made of a thin Ag or Ag alloy film. In the formula, each of R<1> and R<2> is H, optionally substd. alkyl, aryl, alkenyl or cycloalkyl, each of rings A, B may have a substituent and M is a metallic element. The objective high reliability optical recording medium excellent in durability is produced at a low cost.
Patent JP-H03246109-A (JP)
Title: Suspension device for crawler belt type running gear
Inventor: OYAMA YOSHITARO
IPC: B62D55/02
Filed: 1990-02-23
Abstract: PURPOSE:To improve comfortableness and followingness on the ground by suspending and supporting a drive wheel to drive a crawler belt and an axle supporting member to support a play wheel with oscillation allowable on the left and right of a car body and providing a torsional combination portion between the left and right axle supporting members. CONSTITUTION:The rear wheel drive shaft 28 of a rear wheel driving gear 26 to transmit rotation driving force to a rear wheel 13 is supported at the rear part of a swing beam 31. A play wheel 15 is supported at the front part of the swing beam 31. A torsion-free axle beam 36 is mounted between the rear parts of the left and right swing beams 31, 31 and in addition a stabilizer 61 made up of a torsion bar is arranged backward therefrom, to combine both swing beams 31. 31. In this way, comfortableness and followingness on the ground are improved and the flotation of a crawler belt on the inside in turning is prevented.
Patent JP-S62203115-A (JP)
Title: Axial direction control circuit for laser projecting device
Inventor: YAZAKI YOSHIHIRO
IPC: G09G3/02
Filed: 1986-03-03
Abstract: PURPOSE:To eliminate the need to adjust mechanically a deflection controller part even if axial distortion occurring to a projection pattern is corrected, and to easily carry a device by correcting the axial distortion on the projection pattern surface by an electric means. CONSTITUTION:A signal which deflects a laser beam in an X-aixal direction is inputted from an input terminal IX to the inverted input terminal I12 of an operational amplifier 10 which constitutes a horizontal deflecting amplifier A1, amplified, and outputted as an X-axial deflecting signal output from an output terminal OX. At the same time, a signal which performs Y-axial deflection is inputted to the inverted input terminal I22 of an operational amplifier 20 constituting a vertical deflecting amplifier A2 from an input terminal IY, amplified, and outputted from an output terminal OY as a Y-axial deflecting signal output, thereby deflecting the laser beam in the X-aixal and Y-axial directions. The output of the amplifier A2 is voltage-divided by resistances R13 and R14 and supplied to the uninverted input terminal I11 of the operational amplifier 10 constituting the horizontal deflecting amplifier A1 and supplied to the inverted input terminal I12 of the operational amplifier.
Patent JP-H09206686-A (JP)
Title: Vibration screen
Inventor: IIDA TAKEO
IPC: B07B1/28
Filed: 1996-02-05
Abstract: PROBLEM TO BE SOLVED: To quickly and stably stop a vibration screen and prevent the generation of resonance. SOLUTION: A hydraulic motor 9 and an eccentric weight rotated by the hydraulic motor are provided as a means for vibrating a screen main body. Counter-balance valves 15 for generating back pressure on an oil-returning pipe of the hydraulic motor 9 are provided on the oil-supplying/returning pipes 16 and 17 for circulating hydraulic oil to the hydraulic motor 9. Brake valves 18 and 19 forming a closed loop between the hydraulic motor 9 and the oil- supplying/returning pipes 20 and 21 by the rise of the back pressure of the hydraulic motor 9 and circulating the hydraulic oil are provided between the pipes 20 and 21 between the counter-balance valve 15 and the hydraulic motor 9.
Patent JP-S54137287-A (JP)
Title: Reverse conducting thyristor
Inventor: FUKUI HIROSHI
IPC: H01L29/74
Filed: 1978-04-17
Abstract: PURPOSE:To increase the commutation di/dt limit amount when forming the thyristor and the diode into one body by setting the impurity density slope near the PN junction of the diode region larger than that near the central junction of the thyristor region. CONSTITUTION:Thyristor region 13 and diode region 14 are formed between a pair of main surface 11 and 12 of semiconductor substrate 1 with a space secured by separation region 15. Region 13 comprises P emitter layer PE adjacent to the limited area of main surface 11, part of N base layer NB adjacent to the rest area of surface 11 and layer PE, part of P base layer PB adjacent to NB layer and main surface 12, and N emitter layer NE adjacent to surface 12 buried within layer PB each. While region 14 consists of the part where layer NB is adjacent to surface 11 and the area distant away from region 13 among the areas where layer PB is adjacent to surface 12. In such constitution, the density of the layer PB of region 14 is set higher than the layer PB of region 13 as shown by P<+>.
Patent JP-H10238630-A (JP)
Title: Piston ring for internal combustion engine
Inventor: OBAYASHI MAKOTO
IPC: F16J9/12
Filed: 1997-02-27
Abstract: PROBLEM TO BE SOLVED: To appropriately leak combustion gas so as to suppress friction by providing shallow leak grooves for communicating the outer circumferential face with the internal circumferential face of a ring in a plurality of positions in the bottom face or top/bottom faces of the piston ring at same intervals. SOLUTION: Radial and shallow leak grooves 3 for communicating the outer circumferential face with the internal circumferential face of a piston ring are provided in the bottom 13 of the piston ring 1 in four positions on the circumference of the piston ring at approximately same intervals and an abutment part 2 is set to a gastight abutment part. Combustion gas is leaked from the top face of the piston ring 1 through the internal circumferential face to the bottom of the piston ring 1 via the leak grooves 3 as shown an arrow. The leak grooves 3 are provided in the bottom 13 of the piston ring 1 and not in the outer circumferential face so that combustion gas is appropriately leaked with little friction, the life of the piston ring can be elongated, and the internal combustion engine can be efficiently operated.
Patent JP-S57158173-A (JP)
Title: Crawler type running device
Inventor: TAKEHARA TAKESHI
IPC: B62D55/065
Filed: 1981-03-26
Abstract: PURPOSE:To increase the capability to climb over the obstacle on the road surface by driving the crawler up and down mechanism in accordance with the detection of the road surface detector. CONSTITUTION:When contact point of at least either one of the road surface detectors 61 and 62 of the forward crawler mechanism 2 becomes to ON status, the control device 10 sent out the control signal to the crawler up and down mechanism 8, to direct the crawler mechanism 2 to upper direction. Therefore, the output of the motor 8d is transmitted to the hollow shaft 8a through the gear train e and the mechanism 2 is rotatingly transferred upwards in accordance with the upward rotation of the hollow shaft 8a through the connecting rod 8c, resulting to make the crawler C contact to the ascending slope, and bring the detector 61 and 62 to OFF condition. The crawler mechanism 2 climbes over the slope in this way, followed by the rear crawler mechanism 3 reaches to the ascending slope to make the same action, and the both forward and afterward crawler mechanisms 2 and 3 are placed parallel with uphill slope and become stable.
Patent JP-S62201920-A (JP)
Title: Lowly water-absorptive nylon rim material
Inventor: SUETSUGU KENICHIRO
IPC: C08L77/00
Filed: 1986-02-28
Abstract: PURPOSE:To obtain the titled material excellent in water absorption resistance and dimensional stability, by mixing a two-component nylon RIM material with a prepolymer containing a specified polyolefin polyol and a diisocyanato- bisphenol A compound. CONSTITUTION:A two-component nylon RIM material is mixed with a prepolymer containing 10-50wt%, preferably, 25-40wt% polyolefin polyol of a MW of 1,000-6,000, preferably, 1,500-2,000 and 10-50wt%, preferably, 20-40wt% diisocyanatobisphenol A.
Patent JP-S56141181-A (JP)
Title: Catalyst plug for storage battery
Inventor: MATSUSHIMA TOSHIO
IPC: H01M10/52
Filed: 1980-04-04
Abstract: PURPOSE:To improve the condensation as well as the reflux efficiency of produced steam, by providing a slanting part at the bottom of a catalyst plug, and by providing both an explosion-proof filter and an exhaust pipe on the slanting part. CONSTITUTION:Catalysts 2 are contained within a ceramic catalyst case 1. The case 1 is installed in an outer vessel 13, a catalyst plug for a storage battery, in which an oxygen-hydrogen mixture gas is converted into water and is refluxed, being constituted. A water reflux hole 6 is provided in the center of the bottom of the outer vessel 13. The vessel 13 is provided with an annular slanting part 13-1. A ditchlike explosion-proof filter 15 is sticked on the under surface of the annular part 13-1 with an adhesive. The part 13-1 is provided with a penetrating hole 13-2 reaching inside the filter 15. The hole 13-2 is fitted with an exhaust pipe 14, so that the openings 14-1 of the pipe are located within the outer vessel 13 and within the filter 15. Owing to the above constitution, a fluid of a low temperature (a mixture of produced steam with gases which have not undergone any reaction) is exhausted from the pipe 14, and the loss of the produced steam is reduced.
Patent JP-S53130298-A (JP)
Title: Slat water purifying method
Inventor: OGAWA SHINSAKU
IPC: C01D3/16
Filed: 1977-04-20
Abstract: PURPOSE: To prevent a rise in electrolytic voltage due to deposition of polysilica on the surface of a membrane by adding an agent for settling and separating impurities in the presence of a slurry of impurities settled in a thickener when NaCl used in a cell provided with a cation exchange membrane is purified. 
     COPYRIGHT: (C)1978,JPO&Japio
Patent JP-H09207000-A (JP)
Title: Split structure for upper frame of large press
Inventor: OKU MASAMICHI
IPC: B30B13/00
Filed: 1997-02-28
Abstract: PROBLEM TO BE SOLVED: To make a crown small and compact and to facilitate transportation and assembly operation by structuring a split crown in a form of 2-crown 1-slide in which one slide is supported by two pieces of crown. SOLUTION: The assembly process of a transfer press in this structure is such that an installed bed 21, 22 is provided with uprights 31RL-33RL, that split crowns 61-64 are arranged in parallel crosses on crown supporting frames 41RL, 42RL installed between the uprights 31RL-33RL on the left and the right side, and that they are bound with tie rods 71, 72. Slides 91, 92 are mounted on a die changing truck 93, 94 through a supporting jack 95 and placed on the bed 21, 22, with a con'rod 56 drooping from the split crown 61-64 connected to the slides 91, 92. The structure is in the formation that one slide 91, 92 is supported by two split crowns 61, 62, 63, 64. Thus, the assembly time is shortened, safety is improved, and the crown is miniaturized.