Patents Assigned to Tokyo Gas Kabushiki Kaisha
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Patent number: 5857494Abstract: A pipeline structure with a lining material wherein a hermetic outer tube is disposed at the inner surface of a pipeline, and an inner lining material is disposed at the inner surface of the outer tube, said inner lining being made of a rigid fiber-reinforced plastic wherein a thermosetting resin is reinforced by a fiber reinforcement material.Type: GrantFiled: December 27, 1995Date of Patent: January 12, 1999Assignees: Tokyo Gas Kabushiki Kaisha, Ashimori Kogyo Kabushiki KaishaInventors: Katsuyoshi Tsukamoto, Shigeru Toyoda, Sofumi Sato, Masakatsu Hyodo, Kiyoshi Uegaki, Masatoshi Ishikawa, Hitoshi Saito
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Patent number: 5164237Abstract: A lining material adapted for lining the inner surface of pipelines for transferring various kinds of fluids such as city water, sewage, city gases and petroleum, etc., characterized in that low elongation high tensile strength filament yarns are used as wefts (5), (16) forming tubular textile jackets (2), (6) laid in the lining material or as the yarns (12) forming a tubular fibrous member (13) together with a tubular textile jacket (2'). This characteristic feature provides excellent performance required for lining materials for pipelines such as enhanced earthquake resistance and shape retaining property against external pressures and limited expansion in diameter.Type: GrantFiled: April 23, 1991Date of Patent: November 17, 1992Assignees: Tokyo Gas Kabushiki Kaisha, Ashimori Kogyo Kabushiki KaishaInventors: Shigeo Kaneda, Akio Morinaga, Hitoshi Saito, Masahiro Seshimo
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Patent number: 5077107Abstract: A lining material adapted for lining the inner surface of pipelines for transferring various kinds of fluids such as city water, sewage, city gases and petroleum, etc., is characterized in that low elongation high tensile strength filament yarns are used as wefts forming tubular textile jackets laid in the lining material, or as the yarns forming a tubular fibrous member together with a tubular textile jacket. This characteristic feature provides enhanced earthquake resistance and shape retaining property against external pressures and limited expansion in diameter.Type: GrantFiled: June 5, 1989Date of Patent: December 31, 1991Assignees: Tokyo Gas Kabushiki Kaisha, Ashimori Kogyo Kabushiki KaishaInventors: Shigeo Kaneda, Akio Morinaga, Hitoshi Saito, Masahiro Seshimo
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Patent number: 4956038Abstract: A method for lining pipe lines for transporting city water, city gas, petroleum and other various kinds of fluids.In a method used as a conventional art, i.e.Type: GrantFiled: June 19, 1989Date of Patent: September 11, 1990Assignees: Tokyo Gas Kabushiki Kaisha, Ashimori Kogyo Kabushiki KaishaInventors: Akio Morinaga, Masakatsu Hyodo, Tomiyo Nishimoto, Hiroyuki Sakuragi, Shinji Onishi
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Patent number: 4882470Abstract: A boring device for a lining material in a branched portion of a lined pipe such as a gas-conduit or a city water pipe line to which the lining material has been applied, which device includes a tension coil spring 1, a compression coil spring 2 being connected to the tip of the tension coil spring and having a spring constant smaller than that of the tension coil spring, a head element 5 in the form of a circular truncated cone being connected to the tip of the compression coil spring 2 and having an electric heat-generating device 3 coated with a thermoplastic resin and a single or plural transmission wires 9 being connected to the heat-generating device 3 and being passed in a loosened state through the tension coil spring 1 and the compression coil spring 2, the transmission wires 9 being fixed within the tension coil spring 1 at plural points, and a device N provided in rear of the tension coil spring for rotatably extending the device.Type: GrantFiled: April 19, 1988Date of Patent: November 21, 1989Assignees: Tokyo Gas Kabushiki Kaisha, Ashimori Kogyo Kabushiki KaishaInventors: Katsuaki Zenbayashi, Hisao Otsuga, Akio Morinaga, Osamu Toyoshima, Shinji Shimokawa
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Patent number: 4877665Abstract: A lining material for pipelines such as gas conduits, city water pipelines, sewage pipelines, and petroleum pipelines which having a structure wherein a layer of bulky yarns is fastened to either one of the inner and outer surfaces of a tubular textile jacket and an air-impervious layer made of a rubber or a synthetic resin is bonded to the other surface of the jacket, and exhibits excellent shape-maintaining property against external pressure and earthquake-resistance after being applied to the pipelines.Type: GrantFiled: July 1, 1988Date of Patent: October 31, 1989Assignees: Tokyo Gas Kabushiki Kaisha, Ashimori Tokyo Kabushiki KaishaInventors: Kumao Higuchi, Akio Morinaga, Masahiro Seshimo, Hitoshi Saito
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Patent number: 4638789Abstract: A CO sensor is mounted on the heat exchanger of a gas water heater (or other combustion unit) and is connected in circuit with a detecting unit mounted separately from the heater. The detecting unit generates a control voltage in opposition to a reference voltage on a solenoid. The solenoid controls a valve in a fuel supply passage to a burner (or burners) in the heater, thereby shutting off the burners when the CO concentration reaches a predetermined value. A timing circuit may be added to cut off the burners whenever a lesser CO concentration continues for a predetermined time period.Type: GrantFiled: February 8, 1985Date of Patent: January 27, 1987Assignees: Rinnai Kabushiki Kaisha, Tokyo Gas Kabushiki KaishaInventors: Takashi Ueki, Yoshihiro Ishikawa
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Patent number: 4334943Abstract: A method for smoothly evaginating a tubular material under pressure, if necessary, within a pipe line with simultaneous bonding the evaginated tubular material onto the inner surface of the pipe line, which comprises placing in a pressure container having a discharge pipe a part or whole of a tubular material, if necessary, with one terminal end thereof being connected to a first like material rope having a length at least equal to that of the tubular material, if necessary forming a reservoir of a binder enclosed in the interior of the tubular material placed in the pressure container to apply the binder onto the inner surface of the tubular material, fixing the other open terminal end in evaginated state to an annular fastener of said discharge pipe, and applying a pressurized fluid to the pressure container to evaginate the tubular material over its full length as it is propelled from the discharge pipe and, if necessary, moved forward within the pipe line and at the same time bonding the evaginated tubulaType: GrantFiled: July 29, 1980Date of Patent: June 15, 1982Assignees: Tokyo Gas Kabushiki Kaisha, Ashimori Kogyo Kabushiki KaishaInventors: Katsuaki Zenbayashi, Akio Morinaga, Masao Hirayama, Akira Morita
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Patent number: 3977140Abstract: A plurality of dampers are arranged and interposed between a spherical tank and its foundation in such a way that when the foundation shakes in case of an earthquake so that the spherical tank vibrates or swings relative to the foundation, the amplitude of the relative vibrations of the spherical tank may be controlled by the dampers.Type: GrantFiled: May 20, 1974Date of Patent: August 31, 1976Assignees: Ishikawajima-Harima Jukogyo Kabushiki Kaisha, Tokyo Gas Kabushiki KaishaInventors: Tadashi Matsudaira, Masaharu Kunieda, Takanori Kimura, Shinya Nakano