baber/WOPTO huggingface dataset:
Patent JP-H01191355-A (JP)
Title: Optical pick-up
Inventor: MAEDA HIDEO
IPC: G11B7/09
Filed: 1988-01-26
Abstract: PURPOSE:To cause an optical pick-up to be compact and light, to obtain a low cost and to attain a high speed access by providing a diffraction grating which transmits a collimator light, transmission-primarily-diffracts one part of a reflected light from a magneto-optical disk and reflection-primarily-diffracts another part. CONSTITUTION:A laser light collimated by a collimator lens 23 is transmitted through a diffraction grating 25 and condensed on a magneto-optical disk 22 by the object lens 24. When the reflected light from the magneto-optical disk2 2 returns to the diffraction grating 25, one part of the light goes to be a returning light 27, which is transmission-primarily-diffracted, and a focus error signal and a track error signal are detected. Then, the other part of the reflected light is reflection-primarily-diffracted by the diffraction grating 25 and photo-detection is detected by a photodetector 36. By detecting difference between the light quantity of the returning light 27 by the transmission-primary- diffraction and the light quantity of a returning light 33 by the reflection- primary-diffraction, a magneto-optical signal is detected. Thus, the optical pick-up, which is caused to be compact and light at the low cost and can be obtained at a high speed operation.
Patent JP-S57130963-A (JP)
Title: Preparation of 2,3-dichloropropionitrile
Inventor: KURODA KAZUMOTO
IPC: B01J31/02
Filed: 1981-02-05
Abstract: PURPOSE: To prepare the titled compound useful as a raw material of polymers, etc., economically, in high yield, by chlorinating acrylonitrile in the presence of a small amount of pyridine compound and a low-cost alkaline earth metal carbonate.  
     CONSTITUTION: 2,3-Dichloropropionitrile is prepared by chlorinating acrylonitrile in the presence of a catalyst comprising pyridine or an alkylpyridine and an alkaline earth metal carbonate. The amount of the carbonate is ≥1wt% of acrylonitrile, and the necessary amount of the pyridine compound is as low as 0.3W15wt% of acrylonitrile. The combined use of the alkaline earth metal carbonate enables the considerable reduction of the amount of expensive pyridine compound and simplifies the post-treatment of the reaction liquid. 
     COPYRIGHT: (C)1982,JPO&Japio
Patent JP-S61176783-A (JP)
Inventor: TAI TOSHIO
IPC: E06B3/00
Filed: 1985-01-29
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-H05210868-A (JP)
Title: Multibeam separation type optical head
Inventor: KAMISADA TOSHIMASA
IPC: G11B7/135
Filed: 1992-01-30
Abstract: PURPOSE:To obviate the generation of an error in an error signal detecting optical system by constituting the multibeam sepn. type optical head having the optical system consisting of a stationary part and a moving part in such a manner as to prevent a range where the respective light beams pass the pupil of the objective lens from changing even if the moving part moves. CONSTITUTION:The plural beams 2, 3 emitted from plural light sources 15, 21 of the stationary part 1 are parallel with the moving direction 12 thereof up to the moving part 4 and are so superposed as to incline at an angle thetawith each other by the beam superposing and inclining means of the moving part (mirror 25 and dichroic mirror 19). These beams are condensed to the track 8 of an optical disk 7 through the pupil 11 of the objective lens 6. The reflected beams are returned through the backward routes to photodetecting systems 20, 26. Since the beams 2, 3 (which may be parallel with or be aligned to each other) are parallel with the moving direction, the range where the beams pass the pupil does not change even if the moving part moves.
Patent JP-H02197586-A (JP)
Title: Heat resistant tarnish preventive for copper and copper alloy
Inventor: MAEDA AKIO
IPC: H05K3/28
Filed: 1989-01-24
Abstract: PURPOSE:To smoothen the surface of solder on the surface of a Cu-based metal with a heat resistant tarnish preventive stuck to the surface by adding boric ester represented by a specified general formula to the preventive contg. a butanetetracarboxylic acid compd. CONSTITUTION:This tarnish preventive contains one or more kinds of boric esters represented by general formula I (where R is 1-12C alkyl and n is an integer of 1-3) and one or more kinds of butanetetracarboxylic acid compds. represented by general formula II (where each of R1 to R4 is H or 1-18C alkyl) and can prevent the tarnish of a Cu-based metal for a long time in the wide temp. range from ordinary temp. to a high tempe. of >=250 deg.C. Even when a Cu-based metal with this tarnish preventive stuck to the surface is soldered after exposure to a high temp. for a long time, the entire surface can be uniformly soldered and the surface of the solder is smooth.
Patent JP-H02195619-A (JP)
Title: Pressure switch
Inventor: ITOI HIROTO
IPC: H01H35/26
Filed: 1989-01-25
Abstract: PURPOSE:To simplify the structure omitting a vacuum gage and achieve downsizing of a pressure switch provided with a heating means by constructing it using a shape memorizing alloy. CONSTITUTION:By actuating a pump for low vacuum 5, back pressure of a pump 3 for high vacuum is reduced. By electrifying a shape memorizing alloy 15 of a pressure switch 2 by a power source 18, the shape memorizing alloy 15 is heated, which is then deformed against a spring 16 at the temperature greater than the predetermined, and is extended in the direction indicated by an arrow. A movement contact 17 is also moved downward at this time until it contacts a fixed contact 14A, whereby, the pressure switch 2 is turned 'ON', and based on a working signal from a driving device 6, the pump for high vacuum 3 is actuated. When the pump 3 for high vacuum is actuated, pressure in a pressure reduction container 1 is further reduced.
Patent JP-S60160228-A (JP)
Title: On-vehicle radio transmitter
Inventor: HIRANO MOTOMIKI
IPC: H04B5/00
Filed: 1984-01-31
Abstract: PURPOSE:To attain excellent transmission/reception even if a face of a loop antenna of a card type transceiver is directed in any direction by adopting the constitution that at least two loop antennas are provided to a car body so as to transmit/receive signals having a phase difference of 90 deg. to each other. CONSTITUTION:The two loop antennas 10, 19 are provided as the loop antennas of an on-vehicle side controller 2 and a two-way phase shifter 20 is provided to the one loop antenna 19. The phase shifter 20 is of constant resistance/full transmission type and a phase difference of 90 deg. is produced between the input and output. The antenna 10 is provided to a door mirror of the door of the driver's seat and the antenna 19 is incorporated in a back part of the driver's seat. Thus, electromagnetic fields HA, HB generated from the antennas 10, 19 are crossed at the door side of the driver's seat and produced in a direction in parallel on ground. The combined electromagnetic field HT at a point P is a rotating magnetic field (circularly polarized magnetic field) whose direction is rotated by 360 deg. in the period of a carrier signal and when the card type transceiver 1 is placed at the point P, the rotating magnetic field HT orthogonal to the loop face of the loop antenna 3 exists without fail.
Patent JP-2000211509-A (JP)
Title: Atc transmitter and transmitting method for atc information
Inventor: ARAI MAMORU
IPC: B61L1/18
Filed: 1999-01-25
Abstract: PROBLEM TO BE SOLVED: To attain cost reduction and prevent generation of no-current time at the time when a train passes through a track circuit by transmitting information corresponding to a train existing track circuit based on train existing conditions for specifying the train existing track circuit among (n) pieces of track circuit. SOLUTION: When it is detected that a train exists on a track circuit AT, an automatic train controller(ATC) signal to be sent to the train on the track circuit AT is transmitted from a transmitter 12. When it is detected that a train exists on a track circuit BT, on the other hand, an ATC signal to be sent to the train on the circuit BT is sent from the transmitter 12. A transmitter 11 is connected to an ATC control area in which the track circuits AT, BT and a track circuit CT are connected continuously while it is adjacent thereto. Accordingly, only one transmitter is provided to the ATC control area composed of (n) pieces of track circuit, which leads to cost reduction.
Patent JP-S57132919-A (JP)
Title: Method of cutting off slender material
Inventor: YAMASHITA KATSUNORI
IPC: B26D7/10
Filed: 1981-02-03
Abstract: PURPOSE:To improve the yield of a hot slender material in its cutting-off, by adopting a method of taking the length of the defective front part of the material into consideration to determine the cut-off length of the first piece. CONSTITUTION:After a slender material W sent out of a finish-rolling machine 1 is cut off to a prescribed length by a cutting-off machine 11, the material is cooled. The material is then sent out from the cooling bed so that a prescribed number of such materials are prepared and then cut off to a product length by a cooling and cutting-off machine. In that case, a data processor 6 performs combined calculation on the basis of the predicted overall length, the temperature of the hot slender material W, the final product length, a tolerance and the length C of a flaw-including part. The length of the first cut-off piece including the front part of the slender material W is made larger than that of the second and succeeding cut-off pieces determined in relation with the overall length of the slender material, by a length prescribed depending on the specifications of  the material. According to this cutting-off method, the yield of the material is  improved and the production efficiency is heightened.
Patent JP-H09209857-A (JP)
Title: Intake device for engine
Inventor: TAKAHASHI TOMOKI
IPC: F02M35/10
Filed: 1996-01-31
Abstract: PROBLEM TO BE SOLVED: To enhance the detecting accuracy of an air flow meter in an intake device for an engine in which a dust for introducing intake air is formed of an accordion part and a straight part, by integrally forming the according part and the straight part, and arranging the air flow meter on a side where is downstream the straight part and just upstream the accordion part. SOLUTION: A duct 2 for introducing intake air is equipped with an accordion part 24 and a straight part 25. In this case, the duct 2 is integrally formed of an elastic material consisting of rubber and so on, and an air flow meter 5 is attached to this duct 2. A boss 26 and a recessed part 27 which are arranged as air flow meter mounting parts for the duct 2, are arranged at an end on the downstream side of the straight part 25, that is, the air flow meter 5 is arranged to approach to the accordion part 24, therefore, the length L1 of a pass from the outlet 11 of an air cleaner 1 to the airflow meter 5 is secured to the maximum extent. Hereby, the turbulence of intake air generated when led to flow from the air cleaner 1 into the duct 2, is sufficiently rectified so as to enhance the detecting accuracy of the air flow meter 5.
Patent JP-S58135141-A (JP)
Title: Preparation of single polarized optical fiber
Inventor: YOKOTA HIROSHI
IPC: C03B37/018
Filed: 1982-02-04
Abstract: PURPOSE:To prepare the titled optical fiber providing core glass with double refraction properties capable of preserving polarized electromagnetic radiation, by depositing doped silica glass having different coefficients of linear expansion on the inner side of core, providing it with anisotropic thermal stress. CONSTITUTION:Glass is deposited on the inside of the rotating quartz tube 11 by MCVD process to form the clad layer 12, and the core layer 13 for transmitting light having higher refractive index than the clad layer 12 is deposited uniformly in the direction of circle. The rotation of the quartz tube 11 is stopped, the glass layer 14 having a coefficient of linear expansion different form that of the core layer 13 is formed on the inside of the core layer 13 while one side of the outer periphery of the quartz tube 11 being heated, the quartz tube 11 is rotated by 180 deg., and the same glass layer 14 as the above-mentioned layer is deposited in the suspension state of the rotation. The quartz tube 11 is then heated at high temperature, processed to give a dense cross-sectional  area, and spun to give single polarized optical fiber.
Patent JP-H10212883-A (JP)
Title: Gate door
Inventor: KOBAYASHI TOMIO
IPC: E06B11/02
Filed: 1997-01-30
Abstract: PROBLEM TO BE SOLVED: To easily change the whole height of gate doors, by fitting the upper plates to the upper end of the gate door bodies with a certain height so as to extend them upward. SOLUTION: A gate door is constituted of gate door bodies 1 with a certain height corresponding to gate posts 3 and the upper plates 2 attached to the upper ends of gate door bodies 1 so as to extend them upward. Mutually oppositely projecting engaging pieces are provided on the upper end face of the gate door bodies 1 and the lower end of the engaging pieces are formed as rail grooves. And projections with a nearly inverted T-shaped section are provided at the underface of the upper plates 2 and fitted to the engaging pieces and inserted in the rail grooves to fit the upper plates 2 to the upper end of the gate door bodies 1. in this way, the height of the whole gate door can be changed by exchanging the upper plates 2 and hence, the height of the whole gate door can be easily changed by use of the gate door bodies 1 with a certain height corresponding to the gate posts 3.
Patent JP-H06227417-A (JP)
Title: Paddy field working machine
Inventor: OCHI TATSUJI
IPC: B62D109/00
Filed: 1993-02-03
Abstract: PURPOSE:To improve rectilinear running performance while lightening the handle operation at the time of turning at the edge of a ridge between rice fields. CONSTITUTION:A paddy field working machine comprises a steering assisting mechanism B for giving operation assisting force to a steering operation system for steering wheels 8 of a running machine body, wherein the runnig load to the running machine body produced with running on a paddy field is detected, and according to the running load detection result, the steering assisting mechanism B is controlled in such a manner that the more the running load is increased, the more the operation assisting force is increased.
Patent JP-S58133565-A (JP)
Title: Forced circulation solar system
Inventor: AONO TOSHIYUKI
IPC: F24S90/00
Filed: 1982-02-02
Abstract: PURPOSE:To contrive an improvement of piping workability, by providing a feed pipe and a return pipe on a solar heat collector side viewing from a circulation pump. CONSTITUTION:A bypass duct 9 which is located on a solar heat collector side viewing from a circulation pump 8 which circulates a thermal medium heated by the solar heat collector 1 through a heat exchanger 5 provided within a heat accumulator 2 and connects a feed pipe 3, which connects the solar heat collector 1 and the heat accumulator 2 by laying the feed pipe 3 with each other, and a return pipe 4 with each other. Then, as piping workability and heat insulating performance are improved since part of a thermal medium circulating through the heat exchanger 5 by operation of the circultion pump 8 reflows in the heat exchanger side through the bypass duct 9, securing of a sufficient flow of the thermal medium of the heat exchanger 5 becomes possible even if the feed pipe 3 and the return spring 4 whose inner diameters are made small are adopted.
Patent JP-H07206634-A (JP)
Title: Skin detergent
Inventor: UCHIKAWA KEIICHI
IPC: A61K8/00
Filed: 1994-01-13
Abstract: PURPOSE:To obtain a detergent composition, having foaming functions in addition to makeup removing functions and capable of providing a refreshing feeling of washing the bare skin by combining a polyoxtethylene hardened caster oil ester of a fatty acid with an amphoteric surfactant and/or a semipolar surfactant. CONSTITUTION:This skin detergent is obtained by blending a polyoxyethylene hardened castor oil ester of a fatty acid having a fundamental structure expressed by the formula (at least one of R1 to R3 is a saturated or an unsaturated aliphatic hydrocarbon and the rest are H; l, m and n each higher is an integer) with an amphoteric surfactant and/or a semipolar surfactant at a weight ratio of preferably within the range of (1:1) to (1:8). Isostearic acid and oleic acid are preferred as the fatty acid species of the ester expressed by the formula. The average degree of polymerization of ethylene oxide in one molecule of the polyoxyethylene hardened castor oil ester of the fatty acid is preferably within the range of 20 to 50. The surfactant is a betaine type (a carboxybetaine or a sulfobetaine), an amidobetaine type amphoteric surfactants, etc. This detergent is foamed by addition thereof to water.
Patent JP-H08206034-A (JP)
Title: Wet tissue-housing device
Inventor: AIHARA SEIICHIRO
IPC: B65D83/08
Filed: 1995-02-02
Abstract: PURPOSE: To provide a wet tissue-housing device which is simple in treating rubbish and excellent in handleability by furnishing an outer vessel and an inner vessel in combination, wherein the outer comprises a wet tissue housing chamber and a rubbish housing chamber while the inner is arranged so as to be capable of being separated from and coupled with the outer vessel. CONSTITUTION: This wet tissue-housing device includes an outer vessel A and an inner vessel B, and the inner space of the outer vessel A is partitioned by a partition wall 1 into a wet tissue housing chamber 2 and a rubbish housing chamber 3. This tissue-housing device is installed in a place in a car which is relatively spacious, for example a leg space. The wet tissue is used by drawing out of a wet tissue box 12 upon pushing aside a slide plate 13. The used wet tissue is cast into a rubbish receptacle 6 from a rubbish cast-in opening 9 which appears when the slide plate 13 is further dislocated. When the rubbish recetacle 6 is filled, the inner vessel B is taken out of the outer vessel A and carried to a rubbish cage. The emptied inner vessel B is again inserted into and coupled with the outer vessel A.
Patent JP-S58133429-A (JP)
Title: Controller of fuel injection quantity in diesel engine
Inventor: YAMAMOTO TAKESHI
IPC: F02M59/44
Filed: 1982-02-02
Abstract: PURPOSE:To reduce the generation of smoke, by providing a correction controller operated in accordance with the atmospheric pressure and engine speed to a fuel injection quantity controller to reducibly control a maximum injection quantity both in accordance with the atmospheric pressure and to a fixed quantity further at high revolution. CONSTITUTION:When speed of an engine is 2,500rpm or less, a rotary switch 2 is turned off, and a solenoid 81 is not excited to place a metallic plate 62 in a plane state. Now at high altitude, a tapered part 72c of a working rod 72 turns a control lever 57 in the direction of an arrow head Y to adapt the upper part of a tension lever 28 to one end 57a and limit the movement in the direction of an arrow head X. That is, a stroke of a plunger 12 is limited to prevent excessive supply of fuel. When the speed of the engine increases to at least 2,500rpm, the switch 2 is turned on to excite the solenoid 81 and increase the displacement of the rod 72 further turn the lever 57 to a fixed quantity in the direction of the arrow head Y. Accordingly, the movement of a lever 18 in the direction of the arrow head X is controlled to further reduce a maximum injection quantity of fuel to a fixed amount.
Patent JP-H06201308-A (JP)
Title: Correcting method for stylus scanning fluctuation on material surface
Inventor: NOMURA NOBORU
IPC: G01B5/28
Filed: 1993-01-05
Abstract: PURPOSE:To correct stylus scanning fluctuation on a high-anisotropic material surface, and also correct general fluctuation by making mutual correction between the A and the B curves, where one data curve is designated as a curve A and an adjacent data curve is designated as a curve B, and repeating corrections so as to correct the data curves successively. CONSTITUTION:A straight line 5 perpendicular to a grinding direction 4 is scanned by a stylus 3, a straight line 6 dislocated in parallel to the grinding direction 4, the whole area of a measuring area is scanned by repeating this process, and the heights of the stylus 3 are input to a measuring data scanning fluctuation correction device 7. Scanned data are captured 8, and are computed 11 so as to output the result thereof as an image or a hard copy 12. The correction operation of the device 7 is conducted as follows, that is, one data curve is designated as the curve A, a curve adjacent to the curve A is designated as the curve B, the curves A and B are respectively approximated by polygonal lines using points well expressing unevenness as bending points, matching combination is selected, the combined curves are evaluated whether they resemble each other or not by an evaluation function, and the whole abscissas of peaks and dips are determined whether they fluctuate or not so as to correct them.
Patent JP-H11209760-A (JP)
Title: Soil conditioner
Inventor: KAWAMURA MINORU
IPC: C05G3/80
Filed: 1998-01-28
Abstract: PROBLEM TO BE SOLVED: To obtain a soil conditioner capable of improving soil having poor water-retention to soil having improved water-retention by dispersing and mixing a vegetable natural organic material having finely divided form with a specific mineral material having finely divided form. SOLUTION: The objective soil conditioner is produced by dispersing and mixing (A) a vegetable natural organic material having finely divided form (preferably produced by mixing several components to peat moss used as a base) with (B) a mineral material having finely divided form and selected from water-retainable lamellar clay minerals and porous minerals (preferably zeolite- type or montmorillonite-type clay mineral). The mixing weight ratio of A:B is preferably 8:2 to 4:6. The conditioner may further be incorporated with a polymer water-absorbent to shorten the water-absorption time and improve the water absorptivity. The water-absorbing performance is improved and the moist state is maintained over a long period by compounding a water-retaining agent such as polyurethane fine powder. The scattering of the soil conditioner in dried state can be prevented by mixing a scattering prevention agent such as starch.
Patent JP-S63184755-A (JP)
Title: Image recorder
Inventor: OKUZAWA TSUGIO
IPC: G03D13/00
Filed: 1987-01-28
Abstract: PURPOSE:To prevent a photosensitive material directly unrelational to jam generation from being wasted by completing the heat developing of the photosensitive material in exposing or developing at the time of generating a jam on the downstream of a heat developing device 12 and then storing the material in a stagnating device. CONSTITUTION:When a jam is generated by a jam detecting device arranged on a position where jam generation is proposed on the downstream of the heat developing device 12, a changing plate 44 in a route changing device 40 is moved from a position carrying the photosensitive material to a carrying roll as shown by a solid line to a position carrying the material to a carrying roll 42 as shown a dotted line, so that a photosensitive material carrying route to a superposing part 19 is changed to a carrying course to the stagnating device 50. Although respective devices on the downstream of the heat developing device are stopped simultaneously with the jam generation, at least two photosensitive materials S can be stored between the jam tray of the stagnating device 50 and a press plate 54 to be rotated around a shaft 56, so that the photosensitive material S in heat developing or exposing can be completed up to heat developing and then stored for temporarily stagnation.