baber/WOPTO huggingface dataset:
Patent JP-2001013346-A (JP)
Title: Double-clad fiber, and optical amplifier and fiber laser using it
Inventor: NAMIKI SHU
IPC: G02B6/10
Filed: 1999-06-29
Abstract: PROBLEM TO BE SOLVED: To provide the double-clad fiber, in which exciting light injected into a first clad is efficiently coupled to a core and which hardly necessitates labor, time and costs for manufacturing, and an optical amplifier and fiber laser using it. SOLUTION: In this double-clad fiber, a first clad 2 is provided with two or more linear reflecting surfaces 4, and the directions of those reflecting surfaces 4 to a core 1 are changed at an optional place in the transmitting direction of light. The first clad 2 is provided with two or more linear reflecting surfaces 4, the first clad 2 is twisted around the rotation symmetrical axis X of the core 1, and whereby the direction of the reflecting surfaces 4 to the core 1 are changed at an optional place in the transmitting direction of light. The first clad 2 and the core 1, the first clad 2 and a second clad 3 or all of the first clad 2 and the core 1 and the second clad 3 are twisted around the rotation symmetrical axis X of the core 1, and whereby the directions of the reflecting surfaces 4 to the core 1 are changed at an optional place in the transmitting direction of light. Either of the double-clad fibers is used in the required place of a light amplifier. Either of the double-clad fibers is used in the transmittable optical fiber of a fiber laser while laser oscillating exciting light.
Patent JP-S57107604-A (JP)
Title: Moving beam antenna device
Inventor: AOKI KATSUHIKO
IPC: H01Q3/16
Filed: 1980-12-24
Abstract: PURPOSE:To reduce aberration and to achieve moving beam over a wide range, by using movement of a subreflection mirror and a main reflection mirror in common. CONSTITUTION:A panel 31 of a main reflection mirror 3 is coupled with a driving device 8 and a subreflection mirror 2 is coupled with a driving device 4. The driving devices 8, 4 are controlled with a control signal from a controller 9. If an objective satellite is deflected, the subreflection mirror 2 is moved to 2b, via the driving device 4. In this case, the wave surface on a main reflection mirror aperture is as shown in 5b, and the antenna gain and side lobe characteristics are deteriorated. The main reflection panel 31 is moved as 31a via the driving device 8 to compensate the deterioration of the characteristics.
Patent JP-2001008579-A (JP)
Title: Mushroom bed for rearing larva of stag beetle
Inventor: IWATA MASATO
IPC: A01K67/033
Filed: 1999-06-29
Abstract: PROBLEM TO BE SOLVED: To obtain a mushroom bed for rearing a larva of a stag beetle without producing a fruit body and to provide a container storing the mushroom bed therein. SOLUTION: This mushroom bed is used for rearing a larva of a stag beetle. Hyphae contained in the mushroom bed are monocaryotic hyphae which can be the monocaryotic hyphae of a mushroom belonging to the family selected from the group consisting of the families Pleurotaceae, Tricholamataceae and Strophariaceae. The mushroom bed can be formed by inoculating a culture medium containing sawdust of a broad-leaved tree with the mocaryotic hyphae and carrying out the culturing. The larva of the stag beetle can further be contained in the container storing the above mushroom bed for rearing the larva of the stag beetle.
Patent JP-H065535-A (JP)
Title: Heat treatment furnace
Inventor: TAKEUCHI HIDEKI
IPC: H01L21/22
Filed: 1992-06-18
Abstract: PURPOSE:To provide a heat treatment furnace uniformly feeding workpieces, such as semiconductor wafers, with material gas jetted into a reaction chamber. CONSTITUTION:A gas jet means 14 consists of a gas jet part 14a and a gas feed tube 14b. The gas jet part 14a is almost semicylindrical; its outside surface is equal to the inside surface of a reaction chamber 12 in shape. The gas jet part 14a is put into close contact with the inside surface of the reaction chamber 12. Semiconductor wafers 2 are placed at a specific interval in a quartz boat in the reaction chamber 12 such that their surfaces are horizontal. Material gas is jetted into the reaction chamber 12 through a large number of jet holes 44 formed in the inside surface of the gas jet part 14a.
Patent JP-S6427007-A (JP)
Title: Equalizing circuit
Inventor: SHIMAUJI MASAHIRO
IPC: G11B5/09
Filed: 1987-07-23
Abstract: PURPOSE:To eliminate a negative peak, and to reduce the read-out error rate by forming a signal having a positive waveform, being objective to a negative peak which appears in an isolated waveform at the time of reproducing a thin film magnetic head, and executing the addition to a main signal. CONSTITUTION:A reproducing input signal 8 of a thin film head is delayed by a delay line 1, and a main signal 9 is obtained. Subsequently, by setting suitably a delay time of the delay lines 1, 2, an LPF 7, and an adder 5, a negative peak before and after the central peak and a peak of filtering signal 10 are set to the same position. Also, by setting appropriately a cut-off frequency of the LPF, and attenuators 3, 4, the half value width and the amplitude of the filtering signal 10 are approximated to the waveform width and the amplitude of the negative peak. Accordingly, by adding the signal 10 and the signal 9, the negative peak scarcely appears in an output signal 11, the waveform is equalized satisfactorily, and the read-out error rate is reduced.
Patent JP-2000018119-A (JP)
Title: Fuel injection system
Inventor: ITO TOMOYUKI
IPC: F02M47/00
Filed: 1998-06-30
Abstract: PROBLEM TO BE SOLVED: To provide a fuel injection system having reduced area to which pressure is applied and decreasing opening operation force at valve opening by making a valve stem portion and a valve body portion as a thin separate member. SOLUTION: Each diameter of a valve stem 34 and a valve body 38 as separate members can be made smaller. The pressure acting on the opening/closing valve 5 is reduced and the operation force at opening of an opening/closing valve 5 is also reduced. The opening/closing valve 5 is integrally formed, contacting an reinforcement plate 53 with the lower end surfaces 51, 52 of the valve body 38 and the valve stem 34. A valve face 39 has an annular groove 54 concentric with a center hole. As a radial groove 55 is radially outwardly formed from the annular groove 54, the fuel pressure within a balance chamber 30 can be introduced thereto. The thus introduced fuel pressure applies the force to the valve body 38 in the direction to open the opening/closing valve 5 that can be relieved with minimized force.
Patent JP-S6426202-A (JP)
Title: Pid controller
Inventor: YODA TETSUYA
IPC: G05B11/42
Filed: 1987-07-22
Abstract: PURPOSE:To eliminate a stationary deviation by multiplying an integral term by a predetermined coefficient according to the value of the deviation, and determining the coefficient optionally when adding the deviation to the integral term. CONSTITUTION:A PID controller 1 processed a proportional term, the integral term, and a differential term by arithmetic parts 4a-4c respectively according to a specific PID arithmetic expression so as to eliminate the deviation en between measurement data (measured value xn) corresponding to the operation state of a system 3 to be controlled measured by a detector 2 and a preset set value x0. A gain block 6 multiplies the sum of them by a specific proportional gain (100/PB) to calculate an output rate yn for the system 3 to be controlled. An integral term arithmetic part 4b which processes the integral term specially uses the value obtained by multiplying the deviation en by a specific integral term control coefficient. Consequently, excellent constant value control which generates no stationary deviation is performed.
Patent JP-H05184691-A (JP)
Title: Ladder support structure for fire escape apparatus
Inventor: KATO MASAO
IPC: E06C7/48
Filed: 1992-06-19
Abstract: PURPOSE:To strengthen the support structure of a ladder as well as to reduce constitutional members in number and also reduce manhours required for assembly in a fire escape apparatus equipped with a housing frame to be fitted onto a slub and a ladder which is folded so as to be housed in the housing frame. CONSTITUTION:Each fitting 9 is fixed onto the inner surface of a housing frame 2. Each vertical sash bar 6a at the uppermost section of a ladder 6 is pivotally mounted at the mounting section 9b of each fitting 9 with each pivotally mounting bolt 1 3. Each slant shaped support piece 9f which comes in contact with each vertical sash bar 6a at the uppermost section of the ladder 6 so as to support each bar when the ladder 6 is extended, is projected out of the mounting section 9b.
Patent JP-H0741813-A (JP)
Title: Refining method in converter
Inventor: MASUMITSU NORIYUKI
IPC: C21C5/46
Filed: 1993-07-27
Abstract: PURPOSE:To provide a method, in which a desiliconizing and dephosphorizing pretreatment refining and a decarburizing refining or a decarburizing and Mn ore reduction refining of molten iron are efficiently and stably executed with a same converter. CONSTITUTION:In the refining method for producing molten steel from the molten iron with the same converter, slag discharging quantity is weighed after executing the desiliconizing and dephosphorizing refining. The remaining slag quantity in the furnace obtd. from the difference between the produced slag quantity by the desiliconizing and dephosphorizing refining obtd. by calculating and the actual slag discharged quantity is used to the calculation obtaining flux quantity and coolant quantity to be added at the time of successively executing the decarburizing refining or the decarburizing and Mn ore reduction refining.
Patent JP-H0525839-A (JP)
Title: Hydraulic driver for construction machine
Inventor: ICHIMURA KAZUHIRO
IPC: E02F9/22
Filed: 1991-07-24
Abstract: PURPOSE:To permit suitable travel composite actions even under any traveling condition in the hydraulic driver of a construction machine having a shunt compensating valve with a positive gradient characteristic. CONSTITUTION:For a shunt compensating valve 3 for traveling, a control force Fc2 corresponding to the usual pressure difference DELTAPLS is calculated by the arithmetic able 81 of a sunt characteristics arithmetic unit 7, and a control force Fc2 based on a pump discharge pressure Ps is calculated by a traveling control force arithmetic unit 77. Also, smaller values of Fc2 and Fct is selected by a minimum value selector 78 and output as electric signal (b). In the table of the arithmetic unit 77, a relationship that the control force Fct is greater when the pressure Ps is small and the control force Fct is smaller when the pressure Ps becomes greater is set up. In connection with the selection of minimum value in the selector 78, the table of the arithmetic unit 77 functions as an upper value limit table. During the climb-up traveling period, the control force Fct prevails to supply sufficient flow rates to the traveling motor.
Patent JP-H0534054-A (JP)
Title: Method for manufacturing thermal insulated door
Inventor: TAKAHASHI JUNICHI
IPC: F25D23/08
Filed: 1991-07-24
Abstract: PURPOSE:To provide a method for manufacturing a thermal insulted door capable of positively preventing an entering of a foamed thermal insulated material into a lock member. CONSTITUTION:A lock member 5b is fixed within a door main body 5a having a hollow interior part. A thermal insulated member 5d formed in compliance with an outer shape of the lock member is provided to cover the lock member 5b. Then a sheet member 5c is provided to cover the thermal insulated member 5d and an inner part of the door main body 5a is partitioned in water-tight manner and then foamed thermal insulated material is fed into a remained spacing in the door main body 5a. Accordingly, the entering of the foamed thermal insulated material into the lock member during its feeding operation can be shielded by the sheet member 5c and a poor operation or a trouble of the lock member 5b caused by entering of the foamed thermal insulated material can be positively prevented.
Patent JP-S6076828-A (JP)
Title: Picture transmission system
Inventor: SHIYOUNO HIROO
IPC: H04B10/00
Filed: 1983-10-03
Abstract: PURPOSE:To attain the transmission of a picture with high accuracy by controlling phases of the picture at both sides of a light beam which reaches the side surface of radiation with no reflection within a transmission line on the basis of said light beam. CONSTITUTION:A transparent dielectric 10 transmits the picture information by making use of the repetitive total reflection on a boundary surface 12 opposite in parallel to the dielectric 10 or the repetitive reflection on the reflecting surface within a space enclosed by the surface having a high reflection factor. It is impossible to recognize an image C obtained on a radiation side surface 16 as it is since the upper and lower pictures of an object surface A0 are transmitted in a blended state. Therefore, a light beam which reaches the radiation side surface with no reflection within a transmission line is used as a reference to form a slit-shaped picture with a prescribed interval on the one side of the reference light beam. While a picture which is erased in a slit shape is formed at the opposite side of said light beam as a reverse picture. Thus a continuous picture is obtained.
Patent JP-S6162232-A (JP)
Title: Two modulus prescaler
Inventor: SAITO SHIGEKI
IPC: H03K3/356
Filed: 1984-09-04
Abstract: PURPOSE:To attain high-speed frequency division and low current consumption by using a constant current source of a gate circuit for feedback signal control and one of constant current sources of the 1st stage D flip-flop in common in a frequency synthesizer of a radio receiver. CONSTITUTION:FETs T1/T1a, T2/T2a, T3/T3a whose sources are connected in common are connected as a step as it were and form a load transistor (TR) of a drive TRT4 connected to a signal input terminal 1. Then a common source of the FETT4/T4a is connected to a constant voltage source 11 via an FETTg for constant current source. A signal inputted to terminals 4, 5, 6 is inverted in its phase to a signal inputted to terminals 4a, 5a, 6a and when the FETT1 is turned on, the FETT1a is turned off. Through the constitution above, the circuit T4/T4a corresponding to a NOR gate circuit is connected directly to the constant current source 11 of the 1st stage D flip-flop and incorporated within the 1st stage D flip-flop, then the delay time in the NOR operation is reduced.
Patent JP-S6341843-A (JP)
Title: Image forming device
Inventor: YAMAUCHI KUNIHIRO
IPC: G03G15/04
Filed: 1986-08-08
Abstract: PURPOSE:To prevent an image from deterioration of its quality by controlling the quantity of light so that the start of image forming operation is delayed until the quantity of light radiated from a fluorescent lamp detected by a light quantity sensor reaches a prescribed value while supplying current to the fluorescent lamp when the light quantity is the prescribed value or below. CONSTITUTION:At the time of confirming that an original platen is located on a start position, the light quantity of the fluorescent lamp 1 is detected by the light quantity sensor 2. The light quantity data obtained from the sensor 2 are A/D converted, the digital data are inputted to a microprocessor 3 and compared with a previously set up reference value for light quantity to discriminate whether the light quantity is sufficient or not, and when the light quantity of the fluorescent lamp 1 is not sufficient, current supply to the fluorescent lamp 1 is continued. When the light quantity exceeds the reference value, a series of copying cycle is started. During the copy cycle, the processor 3 executes proportional integrating operation based upon the output of the sensor 2 and outputs a control signal with a fixed duty ratio. A fluorescent lamp driving unit 4 allows a through current based upon the control signal to flow into the fluorescent lamp 1 to control the emitted light quantity. Consequently, an image can be prevented from the deterioration of its quality.
Patent JP-H0740847-A (JP)
Title: Front wheel auxiliary steering device
Inventor: KOSHO HIROYUKI
IPC: B62D3/12
Filed: 1993-07-27
Abstract: PURPOSE:To increase the strength of brackets mutually receiving reverse direction internal force out of body fitting brackets of an actuator and a gear box during auxiliary steering a front wheel while stroking a steering gear box by the actuator. CONSTITUTION:Driving a pinion 5 by steering operation strokes a rack 6 to main-steer right and left front wheels. The operation of an actuator 7 can displace a steering gear box 2 via the deformation of an elastic body 9 to auxiliary-steer the front wheels. Cantilever type brackets 10 for the steering gear box 2 and the actuator 7, receiving reverse direction force each other during auxiliary-steering the front wheels, are reinforced each other by a bridging member 12 constraining the relative displacement between these brackets to cause no deformation and no relative displacement even reverse direction internal force is added each other repeatedly.
Patent JP-H059097-A (JP)
Title: Method for pulling up silicon single crystal
Inventor: KODAMA YOSHIHIRO
IPC: C30B15/00
Filed: 1991-06-28
Abstract: PURPOSE:To suppress the generation of the pinholes of the silicon single crystal so as to eliminate initial operation troubles and to lower the carbon concn. in the single crystal at the time of pulling up the single crystal for a substrate used for production of semiconductor integrated circuit elements by a Czochralski method. CONSTITUTION:Polycrystalline silicon raw materials are melted under 5 to 60mbar in-furnace pressure and the silicon single crystal is pulled up under >=100mbar in-furnace pressure.
Patent JP-H1030965-A (JP)
Title: Apparatus and method for measurement of optical pulse characteristic
Inventor: MACHIDA SUSUMU
IPC: G04F13/02
Filed: 1996-07-16
Abstract: PROBLEM TO BE SOLVED: To provide a measuring apparatus and a measuring method for optical pulse characteristic, in which a photodetector does not require a wide-band characteristic, whose sensitivity is high and which are highly stable. SOLUTION: An optical pulse to be measured is incident from an incident end, it is branched by an optical branching filter 1, one pulse reflected by a mirror 2 as homodyne-detection local oscillation light, its optical path length is adjusted so as to agree with the other pulse by a delay device 3 for optical-path-difference adjustment and the pulse is guided to an optical multiplexer 7. The other pulse which is branched by the optical branching filter 1 is reflected, as signal light, by a mirror 5, for optical-path-difference modulation, which is operated by a signal generator 4 for optical-path-difference modulation and by a delay device 6 for correlation-length measurement, and it is guided to the optical multiplexer 7.  Two light signals which are multiplexed by the optical multiplexer 7 are detected by photodetectors 8, 9, and an AC signal component which is generated by the modulation of an optical path difference is amplified up to a measurable voltage by a differential amplifier 10. A band-pass filter 11 passes only the AC signal component generated by the modulation of the optical path difference so as to improve S/N ratio. The AC signal component with reference to the delay amount of the delay device 6 for correction-length measurement is measured by an AC voltmeter 12, and a self-correlation waveform is obtained.
Patent JP-S5888803-A (JP)
Title: Disk recording and reproducing system
Inventor: SAWAZAKI KENICHI
IPC: G11B5/012
Filed: 1981-11-20
Abstract: PURPOSE:To realize a recording/reproducing system with high density and excellent picture quality, by changing the recording angle of a recording head within a vertical blnking period for each revolution of a recording disk. CONSTITUTION:The TV signal to be recorded is supplied to a reproducing head 11 and then recorded to a magnetic disk 10. The TV signal is also supplied to a vertical blanking detecting part 13. In a vertical blanking period, a switch part 12 delivers the angle switch control signal by the output signal of the part 13 and switches the azimuth angle of the recording/reproducing head 11. The density is increased since no gap is required between tracks, and the sufficient S/N is secured by the angle difference of the reproducing head which is obtained in response to the azimuth angle even though the head is drifted toward the adjacent track. Therefore the picture quality is improved.
Patent JP-S6076368-A (JP)
Title: Transfer type heat-sensitive recorder
Inventor: TAKAHASHI YOSHIHIKO
IPC: B41J11/02
Filed: 1983-10-04
Abstract: PURPOSE:To obtain the result of the recording of continually uniform concentration by providing a transfer type heat-sensitive recorder with a means applying high-frequency micro-vibration to at least one of a thermal-head or a platen roller on the recording of the recorder. CONSTITUTION:Recording paper 1 joins an ink donor sheet 3 immediately before a thermal head 2, and is fast stuck to the thermal head 2 together with the ink donor sheet 3 by a platen roller 4, and predetermined recording is executed by the generation of heat of the thermal head 2. A piezoelectric body 6 is fitted to the thermal head 2, and the thermal head 2 is vibrated in the axial center direction of the platen roller 4 by vibrating the piezoelectric body 6 at high frequency on recording. Accordingly, ink heat-fusing from the ink donor sheet 3 is permeated to recording paper 1 considerably forcibly, and the result of recording displays continually uniform concentration.
Patent JP-H1076808-A (JP)
Title: Radial tire for motorcycle
Inventor: WATKINS DAVID ROBERT
IPC: B60C15/06
Filed: 1997-07-10
Abstract: PROBLEM TO BE SOLVED: To enhance the lateral gripping performance and high-speed turning performance of a radial tire for a motorcycle. SOLUTION: A braker assembly includes two layers of braker plies 5 and 7 of such a structure that braker cords consisting of aromatic polyamide fiber are installed as inclined in opposite direction to the tire circumference, and a band layer 6 is arranged in the central region in the tire axial direction of the tread part 2 in contacting with the outer side face in the radial direction of the braker assembly and includes one layer of band ply of such a structure that reinforcing cords consisting of aromatic polyamde fiber are laid at an angle of 5 deg. or less to the tire circumferential direction, wherein the width S of the band ply as the length along the tread surface between two ends about the tire axial direction is no more than 30% of the tread width TW as the length along the tread surface between the edges 3 and 4.
Patent JP-2000027917-A (JP)
Title: Metallic elastic bumper for air spring
Inventor: GRASS DAVID E
IPC: B60G11/28
Filed: 1999-06-30
Abstract: PROBLEM TO BE SOLVED: To absorb larger load and force by mounting the end of a rigid metal base member on one of end members and setting an elastic member on the other end part of the rigid base member so as to make contact with the other end member. SOLUTION: An improved 2-piece bumper 20 is mounted on the base 4 of a piston 3 and extended up toward a pressure chamber 15. The bumper 20 is engaged with an end cap 2 when the pressure of the pressurized fluid in the air chamber 15 is reduced to assist the absorption of an excessive impact force added to one of end members. The bumper 20 comprises a rigid base member 22 and an elastic or rubber member 23. The elastic member 23 consists of a disc-like member having a neck part 32 extended from a bottom surface 33 as the whole, and formed by an annular cutout part 34 adjacent to the surface 33. The periphery surrounding a hole 27 is fitted to the cutout part 34 to provide a snap connection between the member 23 and a base end wall 25 in order to mount the elastic member 23 on the end wall 25.