Patents Assigned to Japanese National Railways
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Patent number: 4307859Abstract: An automatic message announcement system for trains in the railroad station premises, including a train tracking circuit which tracks the location of approaching train, a trains information memory which stores information concerning each train, an edition circuit which combines the train information read out from said train information memory and a series of message patterns which include portions to be completed and which edits the message patterns to produce a series of short messages arranged sequentially according of their priority order to the content, an announcement message selection circuit which determines up to which short message among those arranged sequentially according to said priority order should be announced, in accordance with the location of the train at the time the announcement starts, and an automatic announcement system which includes a voice memory containing addressable voice segments for annoucing the message determined above.Type: GrantFiled: February 13, 1980Date of Patent: December 29, 1981Assignees: Japanese National Railways, Fujitsu Limited, Fujitsu Kiden Ltd.Inventors: Yoshiro Hayashi, Akira Sugihara, Takaki Shimura, Kozo Ishikawa, Kiyoshi Wada, Eiji Yamanaka, Shunsuke Senba
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Patent number: 4299173Abstract: An improvement in an inductive repulsion type vehicle magnetic levitation and guide system for a curved track in which the vehicle is levitated by an electromagnetic force generated between levitation conductors having the same time constant and laid in two parallel rows on the ground at specific intervals in the direction of travel of the vehicle and levitation superconductive magnets on the vehicle capable of being electromagnetically coupled with the levitation conductors, the magnets being opposed to the levitation conductors at a specific distance from the levitation conductors. The vehicle is guided by an electromagnetic force generated between guide conductors having the same time constant successively positioned at specific intervals in the direction of travel of the vehicle and guide superconductive magnets mounted on the vehicle opposed to the guide conductors at a specific distance from the guide conductors.Type: GrantFiled: November 14, 1979Date of Patent: November 10, 1981Assignee: Japanese National RailwaysInventors: Kazutaka Arima, Yoshiyuki Kitano
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Patent number: 4276572Abstract: An automatic message announcement system for announcing the approach, arrival, and departure of vehicles such as trains at a train station. An addressable voice memory is provided for storing sequences of voice segments which are read out upon receipt of announcement command input signals to form messages for announcing that a vehicle is approaching or has arrived or is departing, with specific information such as the vehicle's destination being included in the announcement by inserting the appropriate voice segments at the proper points in the sequence. The messages are composed in such a manner that the sequences of voice segments can be altered to form shorter, but still intelligible, messages if vehicles traffic is so heavy that one message is due for announcement before the previous announcement is completed.Type: GrantFiled: October 26, 1979Date of Patent: June 30, 1981Assignees: Japanese National Railways, Fujitsu Limited, Fujitsu Kiden Ltd.Inventors: Yoshiro Hayashi, Akira Sugihara, Takaki Shimura, Kozo Ishikawa, Kiyoshi Wada, Eiji Yamanaka, Shunsuke Senba
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Patent number: 4273054Abstract: In an induced repulsion type magnetic suspension system for a railway vehicle, superconductive magnets of opposite polarities are alternately set at specific intervals in the longitudinal direction of vehicle, while in the longitudinal direction of the track conductive loop coils or conductive sheets are continuously set at specific intervals, whereby the repulsion due to the eddy current caused by a voltage induced in said conductive loop coils or conductive sheets by the superconductive magnets and said superconductive magnets levitates the vehicle. In this invention, an additional source to produce a magnetic field of the same polarity is provided on the vehicle; and thereby a magnetic flux with the same period as the vehicle vibration is applied which intersects said conductive loop coils or conductive sheets on the ground when the vehicle vibrates.Type: GrantFiled: December 29, 1977Date of Patent: June 16, 1981Assignee: Japanese National RailwaysInventors: Hiroshi Yamashita, Takehiko Iwahana, Shunsuke Fujiwara
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Patent number: 4272003Abstract: A butt welding and burr shearing machine for metal rod, e.g., reinforce steel has opposed relatively slidable clamping devices (8, 9), which has positioning clamp (10) and pivotable clamp lever to clamp the rod by lever action. One of the clamping devices mounts split type shear dies by the positioning clamp and the clamp lever respectively. In the cutting position of the shear dies 21, 22 the rod F2 is not clamped by the clamping device 10 on which the shear dies are mounted.By a series of simple operations the rods to be jointed are loaded sideways, clamped by rotating clamp lever, and pressure butt welded, and bulge formed by welding process is sheared off. The completed rod is removed sideways.Type: GrantFiled: June 22, 1979Date of Patent: June 9, 1981Assignees: Japanese National Railways, Hakusan Seisakusho Co., Ltd.Inventors: Hirotsugu Oishibashi, Katsuyoshi Ueyama, Muneyuki Ohara, Mitsuo Nakamura, Takayoshi Amano
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Patent number: 4267085Abstract: In a railroad track bed an injected layer is formed between the railroad ties and the roadbed so as to protect the latter. The injected layer is composed of an injection material injected through openings formed in the tie. The injection material has a viscosity below 30 poise at a temperature not higher than 200.degree. C. before hardening, and when hardened it has a compressive stress at 10% strain of 0.4 to 30kg/cm.sup.2 at a compressive strain rate at 40.degree. C. of 1.5% per minute.Type: GrantFiled: March 29, 1979Date of Patent: May 12, 1981Assignees: Japanese National Railways, Nippon Oil Company, Ltd.Inventors: Yasuo Katoh, Hideo Kakegawa, Shigeyuki Hayashi, Tadakazu Yamashita
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Patent number: 4230209Abstract: Means of stringing trolley wires comprises a supporting portion, resilient portions and a sliding portion. The supporting portion comprises a box member having an opening at the bottom thereof, and each of the resilient portions comprises a spring member and a supporting rod which protrudes through the opening of the box member and is adapted to move and incline in compliance with the condition of the sliding portion while the sliding portion comprises a pair of long ears and long trolley wires clamped by the pair of the long ears. The long ears of the sliding portion are supported at predetermined intervals by a plurality of the supporting rods of the resilient portions.Type: GrantFiled: October 12, 1978Date of Patent: October 28, 1980Assignees: Japanese National Railways, Sumitomo Electric Industries, Ltd., Hitachi Cable Ltd.Inventors: Yasushi Ohura, Susumu Ohwada, Akira Nakamura, Mitsuo Kitanishi, Yakuharu Nakamura, Akio Tamura
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Patent number: 4181430Abstract: For optically measuring rail displacement, a light projector with a slit plate, a reflection mirror for light projection, a reflection mirror for light reception and a light receptor with a slit plate are installed at specified distances from one another on the underside of the body of a track inspection car on both sides in the longitudinal direction thereof. The light projector, the reflection mirror for light projection, the reflection mirror for light reception and the light receptor are arranged so that the light emitted from the light source in the light projector passes through the slit and, being reflected by the reflection mirror for light projection, is converged onto a measuring axis connecting the points as to which measurement is being made on the opposed rails which constitute the track at at least one of the rails to form a bright spot or band of light.Type: GrantFiled: February 19, 1976Date of Patent: January 1, 1980Assignee: Japanese National RailwaysInventors: Yasushi Shirota, Satoru Kishimoto, Kunio Takeshita, Yoshio Ando
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Patent number: 4173073Abstract: A track displacement detecting and measuring system in which track displacement data are obtained as usual for a unit chord length of the track according to the conventional three-point measuring method by sensors mounted on three predetermined parts of a track inspection car, and such measured data are processed by an arithmetic or processing device of relatively simple structure to detect the amount of track displacement occurring over a track distance which is two or four times the unit chord length. In the system, an improved gyro device free from the adverse effect of rolling of the car is employed so as to permit precise detection of vertical track displacement irrespective of the track distance.Type: GrantFiled: November 18, 1977Date of Patent: November 6, 1979Assignees: Hitachi, Ltd., Japanese National Railways, Hitachi Electronics Engineering Co., Ltd.Inventors: Yoshiro Fukazawa, Takahiko Mochinaga, Morimasa Shirozume, Satoru Kishimoto, Makoto Ito, Fukuo Iwaya
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Patent number: 4166509Abstract: A process for excavating and constructing a tunnel, and an excavating device are disclosed. This process is directed to excavating and constructing a tunnel under a railway or a road on a banking or on level land in the direction transverse to the railway or road. In this process, pits are dug on the opposite sides of the railway, and then an excavator digs into the wall of a pit on one side so as to go out of the wall of the other pit through the ground left therebetween. In this respect, a hollow casing unit of a box shape is coupled to the rear end of the excavator equipped with a screw conveyor. As the excavator advances or digs forwards a given distance, another casing unit is in turn coupled to the rear end of the preceding casing unit, and then such a step is repeated, until the excavator goes out of the wall of another pit. In this manner, the excavator further digs into the wall of one pit in the position adjacent to the preceding run of casing units.Type: GrantFiled: July 6, 1978Date of Patent: September 4, 1979Assignee: Japanese National RailwaysInventors: Toshiyuki Ueno, Isamu Itoh, Yasuyuki Morita
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Patent number: 4156440Abstract: In a railroad track bed, an injection layer is formed between the railroad ties and the raodbed so as to protect the latter. The injected layer is composed of an injection material injected through openings formed in the tie. The injection material has a viscosity below 30 poise at a temperature not higher than 200.degree. C. before hardening, and when hardened it has a compressive stress at 10% strain of 0.4 to 30 kg/cm.sup.2 at a compressive strain rate at 40.degree. C. of 1.5% per minute.Type: GrantFiled: May 24, 1977Date of Patent: May 29, 1979Assignees: Japanese National Railways, Nippon Oil Company Ltd.Inventors: Yasuo Katoh, Hideo Kakegawa, Shigeyuki Hayashi, Tadakazu Yamashita
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Patent number: 4146481Abstract: Disclosed herein is an improvement in a filter of the type having a plurality of filtering plates vertically spaced at fixed intervals to interpose filtering spaces therebetween and as many scrapers laid outwardly from the axis of the stack of filtering plates and inserted one each into the filtering spaces, i.e. between the adjacent filtering plates, the improvement which includes giving each filtering plate a perfectly circular periphery so as to avoid formation of any protuberance from the circumferences and, at the same time, disposing the scrapers so as to keep sliding contact with the adjacent filtering plates.Type: GrantFiled: June 6, 1977Date of Patent: March 27, 1979Assignees: Japanese National Railways, Limited TesikaInventors: Susumu Nagatoshi, Yoshiharu Kato
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Patent number: 4139107Abstract: An apparatus with sensor mounted on a spreader for handling articles of a rectangular parallelepiped shape for detecting elements in plate form attached to both sides of such handling articles and both sides of the handling article loading and unloading bed of freight cars and trucks for conveying such handling articles, in order to position the spreader by detecting the detecting plate by the sensor. The sensor detects the deflections of the spreader with respect to the detecting plate, and the spreader is slightly moved for correcting the deflections so as to accurately position the spreader with respect to the article or the bed of a freight car or a truck.Type: GrantFiled: October 13, 1977Date of Patent: February 13, 1979Assignees: Hitachi, Ltd., Japanese National RailwaysInventors: Yasumasa Ninomiya, Yasuo Nabeshima, Kengo Sugiyama, Yozo Hibino
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Patent number: 4139320Abstract: A process for excavating and constructing a tunnel, and an excavating device are disclosed. This process is directed to excavating and constructing a tunnel under a railway or a road on a bank or on level land in the direction transverse to the railway or road. In this process, pits are dug on the opposite sides of the railway, and then an excavator digs into the wall of a pit on one side so as to go out of the wall of the other pit through the ground left therebetween. In this respect, a hollow casing unit of a box shape is coupled to the rear end of the excavator equipped with a screw conveyor. As the excavator advances or digs forward a given distance, another casing unit is in turn coupled to the rear end of the preceding casing unit, and then such a step is repeated, until the excavator goes out of the wall of another pit. In this manner, the excavator further digs into the wall of one pit in the position adjacent to the preceding run of casing units.Type: GrantFiled: August 15, 1977Date of Patent: February 13, 1979Assignees: Japanese National Railways, Kyokuto Boeki Kaisha Ltd., Ishikawajima-Harima Jukogyo Kabushi KaishaInventors: Toshiyuki Ueno, Isamu Itoh, Yasuyuki Morita
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Patent number: 4112260Abstract: An ac type line concentrator for use in a data communication system, comprising a crosspoint switch circuit. The crosspoint switch circuit is constituted by a plurality of crosspoint switches capable of switching an analog signal (hereinafter referred to as an analog switch), so that a carrier signal modulated by a data signal may be transferred from one of m incoming lines connected with m terminal units to a selected one of n(n<m) outgoing lines connected with a central unit through the ac type line concentrator without being demodulated.Type: GrantFiled: February 1, 1977Date of Patent: September 5, 1978Assignees: Hitachi Denshi Kabushiki Kaisha, Japanese National Railways, Hitachi, Ltd.Inventors: Takashi Kurokawa, Michio Fujiwara, Yoshio Akutsu, Akoi Otani, Harumi Nagasawa, Masujiro Matsuo, Yasuo Ishii, Sigeru Ogawa, Schun'ichi Itoh, Daisuke Takei
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Patent number: 4108288Abstract: A current collector shoe suspension for sliding contact with an electric power line in an externally powered electric vehicle. Current collecting shoes are resiliently biased toward a power rail through a plurality of interconnected vibration absorbing units pivotally mounted to the vehicle. Each unit can vibrate independently of the others, and the units have different resonance points so displaced that their vibration characteristic curves overlap, whereby the shoes maintain contact with the rail over a wide range of vibration frequencies and amplitudes.Type: GrantFiled: July 6, 1977Date of Patent: August 22, 1978Assignees: Fuji Electric Co., Ltd., Japanese National RailwaysInventors: Katsushi Manabe, Fumio Nakama, Kunio Shibayama
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Patent number: 4095764Abstract: A spot control type automatic train stop system utilizing ground control units common to more than one block section signal. For at least one particular block section signal, one or more of the ground units positioned in a block section which precedes the particular block section signal by at least one block section is in a position in the preceding block section common to the position of the basic pattern generating ground unit for the particular block section signal.Type: GrantFiled: November 10, 1976Date of Patent: June 20, 1978Assignee: Japanese National RailwaysInventors: Nobuhisa Osada, Hideo Nakamura
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Patent number: 4091462Abstract: In a mortar compounding apparatus wherein water, cement, aggregate and sand are admitted into a mixing tank at a predetermined ratio and admixed to form mortar, there is provided a control apparatus including detection blades rotated by a constant torque motor via a spring in the mixing tank or a detection tank connected thereto. The load imposed on the detection blades by the mortar is detected by a potentiometer for controlling the amount of water or solid constituents admitted into the mixing tank.Type: GrantFiled: September 7, 1976Date of Patent: May 23, 1978Assignees: Toto Electric Industry Co., Japanese National RailwayInventors: Isaburo Igarashi, Kazuriki Iizuka, Hiroshi Otsuka
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Patent number: 4084981Abstract: A quick hardening cement-asphalt composition used as a grout for a ballast-filled track structure comprising(a) 100 parts by weight of a cement composition prepared by adding to portland cement about 10 to 50% by weight of a mixture of a calcium aluminate-series mineral and calcium sulfate in a weight ratio of about 1:0.3 to 1:3; about 0.05 to 10% by weight of an inorganic salt, and about 0.05 to 3% by weight of at least one of an organic carboxylic acid, an organic hydroxycarboxylic acid and a salt thereof, and(b) about 30 to 400 parts by weight of an asphalt emulsion containing about 0.2 to 8% by weight of a polyoxyethylene alkyl phenyl ether, polyoxyethylene alkyl ether, polyoxyethylene alkyl ester, sorbitan alkyl ester, polyoxyethylene sorbitan alkyl ester or sucrose fatty acid ester nonionic emulsifier and about 0.05 to 2% by weight of a multivalent metal chloride, calculated as the multivalent metal ion.Type: GrantFiled: October 4, 1974Date of Patent: April 18, 1978Assignees: Japanese National Railways, Denki Kagaku Kogyo Kabushiki Kaisha, Toa Doro Kogyo Co., Ltd.Inventors: Yoshiro Higuchi, Yutaka Harada, Toshio Sato, Koji Nakagawa, Iwazo Kawaguchi, Yasushi Kasahara
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Patent number: 4060425Abstract: This invention relates to a super rapid hardening mixture comprisingA. a super rapid hardening cement in which 11CaO.7Al.sub.2 O.sub.3. CaZ (X is a halogen atom), 3CaO.SiO.sub.2 and CaSO.sub.4 are present as indespensable components;B. at least one short range strength accelerator selected from the group consisting of a calcium aluminate material, a lime material, an amine and an ethylene glycol material and calcium sulfate hemihydrate;C. at least one emulsion selected from the group consisting of a bituminous emulsion, a rubber latex and a resin emulsion;D. from 12 to 50 weight percent of water in the total mixture.Type: GrantFiled: March 31, 1976Date of Patent: November 29, 1977Assignees: Japanese National Railways, Onoda Cement Company Limited, Nichireki Chemical Industry Company LimitedInventors: Yutaka Harada, Noriyuki Itai, Hiroshi Ucikawa, Hajime Kato, Katutoshi Sato, Akira Itoh