baber/WOPTO huggingface dataset:
Patent JP-S5447910-A (JP)
Title: Combustion chamber for internal combustion engine
Inventor: TSUTSUMI SABUROU
IPC: F02B23/00
Filed: 1977-09-26
Abstract: PURPOSE: To improve the combustion efficiency of an internal combustion engine by constructing the piston head with a central recess and volute grooves formed on the annular top land of the outer periphery of the piston head to advance the vortex flow formation by means of squish action.  
     CONSTITUTION: The head of the piston 1 of an internal combustion engine is formed with a central recess 4 and an annular top land 5 at the outer periphery of the recess 4 thereof and with volute grooves 6 formed on the land 5 to face with the recess 4. A plurality of volute grooves 6 are formed circumferentially at equal interval thereamong in depth so that the depth Ti at the wall surface of the recess 4 is deeper than that To at the outer peripheral surface of the piston 1. According to this advantageous structure, mixture gas flown from squish area A into the piston combustion chamber B in the recess 4 partially form vortex flow clockwise as designated by an arrow Y along the grooves 6 at the compression stroke of the piston 1 to thereby forcibly form vortex flow in the chamber B by the action of the vortex flow Y 
     COPYRIGHT: (C)1979,JPO&Japio
Patent JP-S606040-A (JP)
Title: Device for controlling number of idle revolutions
Inventor: MURAMATSU MOTOYASU
IPC: F02D41/24
Filed: 1983-06-24
Abstract: PURPOSE:To stabilize the number of revolution on idling when warming up is completed on a high land or on a low land and prevent the stop of an engine or high speed racing by controlling a control valve at an opening to which a compensation for high altitude is added even when a learned value of a memory is erased. CONSTITUTION:When the supply of power source from a battery 5 is interrupted or if a learned value in a back-up memory 44 is erased due to any abnormality of a program, a calculation for an altitude compensating value is carried out. The compensating value is that for an opening necessary for maintaining the number of revolution on idling at an objective value regardless of variation in the density of the air which varies depending on altitude, when the opening of a control valve 21 is set only at a basic set value, and is provided in inverse proportion to the atmospheric pressure. Thereby, the opening of the valve 21 at a required point is determined to be a value to which the basic set value is applied. Thus, even when the learned value is abnormal, since the control valve is controlled by adding an altitude compensating value to the basic set value, the number of revolution on idling cannot be disturbed even if a vehicle is located on a high land or on a low land.
Patent JP-H02236860-A (JP)
Title: Mechanical ejecting device for disk or cassette
Inventor: YAMADA YUICHI
IPC: G11B17/057
Filed: 1989-05-10
Abstract: PURPOSE:To eject a disk, etc., even when the supply of power is stopped by providing a means, which separates a loading mechanism such as a disk and a motive power generating source, and a means, which applies the driving force of unloading to the mechanism. CONSTITUTION:When the disk or a cassette is normally ejected, a rack 15 fixed at a moving plate 3 which drives a member holding the disk, etc., that are provided with a motor 5, a worm gear 6, a worm foil 7, a flat gear 8 and a pinion 9 to be the driving force at the lower part of a frame 1, is moved. When the power is disconnected due to a system down, etc., one edge 12a of an oblong member 12 is pushed from a front panel hole 22a by the tip, etc., of a driver. Thus first a cam 11 turns a plate 10, removes the pinion 9 from a rack 15, further a claw 11c of the cam pushes and moves the projection of the rack 15, and mechanically ejects the disk, etc.
Patent JP-S60259831-A (JP)
Title: High-frequency heating device
Inventor: ISHIMURA YOUZOU
IPC: F24C7/02
Filed: 1984-06-04
Abstract: PURPOSE:To provide a heating device low in cost and compact in construction by partitioning a space formed by a square shaped metal plate into two spaces by means of a partitioning plate and forming one space into a heating chamber and another space into an electric chamber accommodating therein electric parts and the like. CONSTITUTION:The device comprises a metal plate 10 of a substantially square shape constituting the upper plate, a side surface plate, a bottom plate and a side surface plate of the main body of the heating device, a back plate 12 of the main body, and a partitioning plate between the upper plate and the bottom plate. The space formed by the substantially square shape metal plate is partitioned by a partitioning plate 12 into two spaces. One space thereof is formed into a heating chamber 11, and a door freely opened and closed is provided in a front opening part thereof. On the other hand, another space is formed into an electric chamber 17 accommodating therein electric parts of the high-frequency generator. An operating part is provided on the front surface of the electric chamber 17. As a result, the heating chamber itself becomes a heating chamber as it is. Hence, a high-frequency heating device having no wasteful space in the height direction of the heating chamber and being extremely compact can be obtained.
Patent JP-H09302609-A (JP)
Title: System for moving turf panel in stadium
Inventor: YAMADA TOSHIYUKI
IPC: E01C13/08
Filed: 1996-05-09
Abstract: PROBLEM TO BE SOLVED: To reduce the quantity of filled water required for moving a turf panel and to shorten the time therefore by allowing the turf panel to float in a pool temporarily formed in an arena so as to move it together with the pool. SOLUTION: An arena 1 is surrounded by fences 2, 2 having a predetermined height in a water-tight manner. A turf panel 3 is laid on a floating bed made of foamed styrene is set at one side of the arena 1. Weir panels 4, 4 having moving means are provided in front and rear of the turf panel 3 so that a pool 5 for moving the lawn panel is temporarily formed in the arena 1. Water is filled in the pool 5 so as to allow the lawn panel to float up. The weir panels 4, 4 are towed so as to move the turf panel 3 to a predetermined position in the arena 1 together with the pool 5.
Patent JP-H01317465-A (JP)
Title: Ball winning tool for pin-ball machine
Inventor: NIIYAMA KICHIHEI
IPC: A63F7/02
Filed: 1989-05-10
Abstract: PURPOSE:To exclude gain difference between a trained player and an inexperienced player by canceling the operating condition of an operating member based on the achievement of one condition of either the winning of the plural numbers of balls or the winning of a ball to a specified ball winding port. CONSTITUTION:Based on the winning of the ball to the specified ball winning port which is arranged in the playing part of a playing board, the both movable members (for example, pedal pieces 3) of a fluctuation winning device are forcibly converted from a closing condition to an opening condition. Based on the achievement of any one condition of either the winning of the prescribed number of the balls or the winning of the ball to the specified ball winning port (not to be shown in a figure), the operating condition of the operating member is canceled. Accordingly, when the operating condition of the operating member is canceled with the winning of the prescribed number of the balls as the condition, the winning number of the ball goes to be same and the gain to given to the player can be made fair. When the operating condition of the operating member is canceled with the winning of the ball to the specified ball winning port as the condition, contigency can be obtained.
Patent JP-S60259040-A (JP)
Title: Code arranging system
Inventor: ISHIHARA TOSHIO
IPC: H04L27/34
Filed: 1984-06-05
Abstract: PURPOSE:To operate a common amplifier with a back-off less than that required substantially by changing the code arrangement of a multi-carrier when a peak factor is large so as to suppress the peak. CONSTITUTION:When a code arrangement where four 16QAM waves are maximum modulation output levels respectively while the waves ar supervised by a code arrangement supervisory circuit 5 is obtained, the code arrangement is changed by a code arrangement converting circuit 6 so as to bring the modulation output level on a signal line group 1 to a minimum value. Then conversion processing information is transmitted while being superimposed on a predetermined bit location on a signal line group 4 by an information addition circuit 7. The reception side executes the operation restoring the code arrangement by the information bit so as to reproduce correctly the information.
Patent JP-H01287220-A (JP)
Title: Beam hardening method for steel material
Inventor: TSUKAMOTO TAKASHI
IPC: C21D1/09
Filed: 1988-05-12
Abstract: PURPOSE:To easily carry out the beam hardening of a steel material into attractive external appearance at a low cost by coating the surface of a steel material with light absorbing dye and then irradiating the above steel material by light beam. CONSTITUTION:A steel material is irradiated by light beam to undergo beam hardening working. In the above beam hardening method for the steel material, the steel material is previously immersed in a solution of light absorbing dye, such as blacking dye, by which the steel-material surface is coated with the above light absorbing dye. Then, the above beam hardening is applied to the above steel material. By this method, a hardening effect equal to that in the case where an absorbent for preventing beam reflection is applied to the steel material can be obtained, and, owing to the above light absorbing dye remaining after hardening, an attractive external appearance as well as a rust-preventing effect can be produced.
Patent JP-H10294216-A (JP)
Title: Magnetostrictive material and manufacture thereof
Inventor: SUZUKI TOMOHISA
IPC: C22C19/00
Filed: 1997-04-17
Abstract: PROBLEM TO BE SOLVED: To control magnetostriction of an alloy, by causing a magnetic phase containing single or composite Fe, Ni, Co as essential elements and containing rare earth elements having different magnetostrictive constants and a magnetic phase containing no rare earth element to exist in a mixed manner, and then using the magnetostrictive constant proper to each magnetic phase and the mixing ratio of the magnetic phases. SOLUTION: An alloy constituted by two or more types of magnetic phases is used, in which the magnetic phases include a magnetic phase containing rare earth elements having different magnetostrictive constants and single or composite Fe, Ni, Co as essential elements, and a magnetic phase containing no rare earth element and single or composite Fe, Ni, Co as essential elements. A magnetostrictive constant S of a magnetic material C, at the time when two magnetic phases exist in a mixed manner, satisfies the formula (where S1 , S2 ,..., Sn represent the magnetostrictive constants of magnetic phases constituting the alloy, while W1 , W2 ,..., Wn represent the volumes of the magnetic phases constituting the alloy).  Actually, since it is difficult to measure the volumes of the magnetic phases, the quantity of precipitation of the magnetic phases is estimated from the composition of added elements.
Patent JP-S5239054-A (JP)
Title: An improved sealing construction
Inventor: OOSUMI TAKAYOSHI
IPC: F16J15/3292
Filed: 1975-09-22
Abstract: PURPOSE: By the combination use of TEFLON unit and the packing stuffed with packing material, desiged is to create a sealing structure which has a characteristic features of the above two materials, with wide range of temperature for use and the pressure. Moreover, even under a low temperature and pressure, or under a high temperature of pressure which is capable enough to carry out the sealing function at all times. 
     COPYRIGHT: (C)1977,JPO&Japio
Patent JP-S5641828-A (JP)
Title: Manufacture of coarse gypsum
Inventor: SHINOZAKI TAKEKI
IPC: C01F11/46
Filed: 1979-09-10
Abstract: PURPOSE: To manufacture platelike or prismatic thick coarse gypsum crystals in a short time by hydrating α-hemihydrate gypsum in the presence of gypsum and the absence of a surfactant.  
     CONSTITUTION: 100pts.wt. α-Hemihydrate gypsum is mixed with ≥20, preferably ≥50pts.wt. gypsum and hydrated at ≥30°C for 1W3hr in the absence of a surfactant to obtain platelike or prismatic thick coarse gypsum crystals of high grade. 
     COPYRIGHT: (C)1981,JPO&Japio
Patent JP-S62271610-A (JP)
Title: Action detecting mechanism for piston rod of rotary fluid pressure cylinder for chuck
Inventor: OOTA KOJIRO
IPC: G01B7/00
Filed: 1986-05-20
Abstract: PURPOSE:To permit a detecting mechanism to be applied being left as it is to a machine tool now in operation, by providing a detected structure made of metal and a fixed contactless analog sensor, which generates a change of power, to detect the movement of a piston rod in its stroke direction. CONSTITUTION:A detecting mechanism is constituted of a metal made truncated cone-shaped detected structure 2, mounted to the rear end side of a piston rod 1, and a contactless analog sensor 3 set to be opposed to said detected structure 2. The sensor 3 outputs power, generated in accordance with a distance between the point end of the sensor and the peripheral surface of the detected structure 2, to a control unit. If the piston rod 1 moves, the power of the sensor 3 changes, and from a value of this change a position change amount of the piston rod 1 in its stroke direction can be detected by an analog value. This mechanism can be applied to a machine tool in operation only by replacing the detected structure 2 and the sensor 3.
Patent JP-S60260118-A (JP)
Title: Electrostatic shield of tap changeover switch
Inventor: KUMAGAI SABUROU
IPC: H01F29/02
Filed: 1984-06-07
Abstract: PURPOSE:To alleviate electric field, form a compact tank and form a tap changeover switch just suitable for SF6 gas transformer by changing the shape of electrostatic shield to be attached to the external circumference of insulation cylinder. CONSTITUTION:The radius N of electrostatic shield 10 attached to the external circumference of insulation cylinder 5 is a little shorter than the radius M of electrostatic shield 1 attached to the internal circumference of insulation cylinder 5 (N<M), shape of section at the end part forms almost quadrant obtained by dividing the circular section into four sections and the curvature R of arc of side surface opposed to the tank 4 is set large. In case two electrostatic shields 1, 10 in different shapes are provided in parallel in both sides of insulation cylinder 5, a large arc can be delineated as a whole due to the difference of radius D (D=M-N) of radii and difference in curvatures R, r. In other words, the interval of equal voltage lines of lead wire connecting bolt 3B and the end of electrostatic shields 10, 1 is almost equal and is harmonized. Particularly, interval of equal voltage lines of electrostatic shield 10 at the external circumference of insulation cylinder 5 is expanded and concentration of electric field to the end (b) can be alleviated distinctively.
Patent JP-S5641764-A (JP)
Title: Core at primary side for linear induction motor
Inventor: ASAKAWA KAZUO
IPC: H02K41/025
Filed: 1979-09-11
Abstract: PURPOSE:To smooth the distribution of the magnetic flux density of voids and decrease braking action functioning to a conductor at the secondary side by a method wherein surfaces where slots for the field winding of a core at the primary side form are covered with a sheet in a magnetic material. CONSTITUTION:Magnetic pole pieces 12 and slots 13 are alternately formed to a core 10 at the primary side made up by laminating iron plates, and field winding 11 flowing polyphase currents is formed around the magnetic pole pieces 12. Surfaces where the slots 13 make up are covered with a sheet 10 with thickness such as 1.0-1.5mm. built up by a magnetic material. Thus, magnetic flux density of slot 13 portions rises, and braking force by the pulsation of magnetic flux can be decreased. And mean magnetic flux density rises, and thrust increases.
Patent JP-H04343822-A (JP)
Title: Back wind exhaust device of vacuum cleaner
Inventor: SUGIBAYASHI MITSUHIDE
IPC: A47L9/08
Filed: 1991-05-21
Abstract: PURPOSE:To provide a vacuum cleaner capable of instantaneous reverse exhaustion when dust attaches to its suction port or when dispersing dust stuck to a carpet. CONSTITUTION:Fan cases 11A, B12 made in a pair are mounted in a hose pipe 10 and the fan case A11 is provided with both an inlet port A13 open to fresh air and an air passage A14 allowed to communicate with the hose pipe 10 and a driving fan 15 which is rotated by inlet air is disposed in the fan case A11. The fan case B12 is provided at its outer peripheral portion with an inlet port B16 open to fresh air and an air passage B17 allowed to communicate with the hose pipe 10 and also an air blowing fan 19 driven by the rotating shaft 18 of the driving fan 15 is disposed in the fan case B12. A control valve 20 which shuts air flow through the hose pipe 10 and which opens the air passages A14, B17 is provided. Therefore, the suction tool is capable of instantaneous reverse exhaustion so that the serviceability of the suction tool can be enhanced.
Patent JP-H1093852-A (JP)
Title: Digital still camera having duplex exposure function
Inventor: YUN O KIM
IPC: G03B19/02
Filed: 1997-05-06
Abstract: PROBLEM TO BE SOLVED: To provide a digital still camera having a duplex exposure function such as a general optical camera which can compose video data that is taken twice into one digital video and which can be made into the video that is doubly exposed. SOLUTION: A video image pickup means 10 converging inputted light and converting it into an electric signal so as to output it, an analog-digital conversion part 20 converting the analog signal inputted from the video image pickup means 10 into the digital signal so as to output it and a video composing means 30 storing the digital signal inputted from the analog/digital conversion part 20 in accordance with the inputted control signal in a field unit and synthesizing the signals in the field unit so as to output it are provided.  Furthermore, a control part 40 controlling the video synthesis means 30, a digital/analog conversion part 50 converting the signal inputted form the video composing means 30, a recording device 60 storing the signal inputted from the video synthesis means 30 in accordance with the control signal and a computer interface 70 transmitting the signal inputted from the video composing means 30 to the computer in accordance with the control signal inputted from the control part 40 are contained.
Patent JP-S63282567-A (JP)
Title: Parallel arithmetic circuit for sum of products
Inventor: MATSUOKA TATSUO
IPC: G06F17/10
Filed: 1987-05-14
Abstract: PURPOSE:To speed up convolutional arithmetic operation by providing N (N>=2) multipliers and setting the number of inputs of an adder to N=1 which is one larger than the number N of the multipliers. CONSTITUTION:An address bus 1 specifies NX2 addresses of a data memory 2 at a time, all operands of the N (N>=2) multipliers 3-6 are supplied at the same time, and the N multiplication results of the multipliers 3-6 which are obtained a gate delay time later and the output of an accumulator 8 are inputted to the multi-input adder 7 which bus N+1 input terminals. Then the output of the multi-input adder 7 which is obtained the gate delay time later is latched in the accumulator 8 with a latch clock. Thus, N-term sum-of-products arithmetic operation is performed in one cycle of address specification to the data memory 2 and the latching of the accumulator 8. Consequently, the processing where the arithmetic results of the sum-of-products arithmetic operation, etc., are accumulated is speeded up.
Patent JP-H09299364-A (JP)
Title: Ultrasonic diagnostic device
Inventor: AMAMIYA SHINICHI
IPC: A61B8/00
Filed: 1996-05-10
Abstract: PROBLEM TO BE SOLVED: To display such a three-dimensional ultrasonic image as to force an operator to recognize the distance from an ultrasonic probe by giving distortion to a display according to the distance from an ultrasonic probe. SOLUTION: An ultrasonic probe 1 transmits an ultrasonic pulse into a tested body, an ultrasonic echo is received, and a beam former 2 changes the direction of a sound ray in such a manner as to scan the inside of a tested body in a plane and generates a sound ray signal in each sound ray direction. A B-mode processing part 3 generates B-mode sound ray data according to the intensity of a sound ray signal, and a CFM mode processing part 4 generates CFM sound ray data according to the Doppler component of the sound ray signal.  Further, an address control part 6 sequentially reads and writes original sound ray data stored in an original sound ray memory 5 in the direction of depth, a three- dimensional arithmetic circuit 7 generates three-dimensional sound ray data by using the original sound ray data, and a DSC 9 format-converts the original sound ray data or three-dimensional sound ray data on a screen format.
Patent JP-S61275510-A (JP)
Title: Tappet valve device in internal combustion engine
Inventor: ITO SHIGEYOSHI
IPC: F02F1/24
Filed: 1985-05-29
Abstract: PURPOSE:To obtain a small-sized, lightweight engine by tilting an axis of a spark plug cover tub against an axis of a cylinder bore and on the other hand by pressing rocker arms respectively for suction and exhaust valves against bearings by means of spring means. CONSTITUTION:An axis 16 of two suction valves 12's and an axis 17 of two exhaust valves 13's are tilted against an axis 18 of a cylinder bore 2 by suitable angles of theta1 and theta2 in the opposite direction each other. A cam shaft 19 is pivoted between the two suction valves 12's and the two exhaust valves 13's with rocker arms 20 and 21 respectively for suction and exhaust valves arranged in parallel with the cam shaft 19. In the above constitution, a rocker arm shaft 21 is equipped with a corrugated plate spring ring 33 o press both rocker arms 24's against neighboring bearings 22's and at the same time both rocker arms 23's are pressed against neighboring bearings 22's by means of a U-shaped spring piece 33. An axis 30 of a cover tube 29 for a spark plug 8 is tilted against cylinder bore 2 axis 18 by a suitable angle theta3.
Patent JP-S607418-A (JP)
Title: Optical fiber type polarization compensating device
Inventor: KOMATSU YOSHIROU
IPC: H04B10/25
Filed: 1983-06-28
Abstract: PURPOSE:To stabilize single-mode fiber projection light against a change in polarization state and reduce its loss by connecting optical fibers in two stages while specifying their axes of birefringence, and controlling pressure applied to the optical fibers and the extent of elongation according to the polarization state of the fiber porjection light. CONSTITUTION:The projection light of a polarization maintaining fiber 16 is split by a polarization beam splitter 8 into components which are at 45 and 90 deg. to the principal axis of a polarization maintaining fiber 15 respectively. They are photodetected by photodetectors 11 and 12, and an electric control system 14 applies a voltage to a cylindrical piezoelectric element 2 so that both electromotive forces become equal to each other. The polarization maintaining fiber 16 wound around a cylindrical piezoelectric element 3 is connected to the polarization maintaining fiber 16 so that their principal axes are at 45 deg. to each other. The projection light of the polarization maintaining fiber 16 is passed through a lambda/4 plate 6 and then split by a polarization beam splitter 7 into components which are at 45 deg. and 90 deg. to the optical axis; and they are detected by photodetectors 9 and 10. An electric control system 13 applies a voltage to a cylindrical piezoelectric element 3 so that both electromotive forces become equal to each other.