Patents by Inventor Kazuo Takahashi

Kazuo Takahashi has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 9841356
    Abstract: A combustion pressure sensor is formed of a ring-shaped cylindrical body. The combustion pressure sensor detects combustion pressure in a combustion chamber of an engine by being attached to an outer periphery of a tip of a functional component attached to the combustion chamber. The cylindrical body forms sealed space sealed with a ring-shaped diaphragm on one side and with a ring-shaped support member on an opposite side. The sealed space is defined by an external cylindrical member and an internal cylindrical member coaxial with each other. The diaphragm has a ring-shaped pressure receiving part formed on a side near the combustion chamber to receive pressure from outside and a ring-shaped transmitting part formed on a rear surface of the diaphragm. A pressure transmitting member and a pressure detecting element are provided in the sealed space.
    Type: Grant
    Filed: August 27, 2013
    Date of Patent: December 12, 2017
    Assignees: CITIZEN FINEDEVICE CO., LTD., CITIZEN WATCH CO., LTD.
    Inventors: Kazuo Takahashi, Takayuki Hayashi
  • Patent number: 9835523
    Abstract: A combustion pressure detection device for detecting combustion pressure inside a combustion chamber of an internal combustion engine, the combustion pressure detection device being attachable to a communication hole communicating an inside of a cylinder head configuring the combustion chamber and an outside thereof, the combustion pressure detection device includes: a housing; and an piezoelectric element and the like that are located in the housing and detect the combustion pressure. The housing has an attachment structural part attachable to the communication hole, the attachment structural part has a third outer peripheral surface to which a first seal member is attachable, and a inclined surface to which a second seal member is attachable, and the inclined surface is arranged at a front end side in a direction to the combustion chamber relative to the third outer peripheral surface when the combustion pressure detection device is attached to the communication hole.
    Type: Grant
    Filed: February 27, 2013
    Date of Patent: December 5, 2017
    Assignees: CITIZEN FINEDEVICE CO., LTD, TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Tsuyoshi Misaizu, Kazuo Takahashi, Yoshihiko Soga, Hiromichi Yasuda
  • Publication number: 20170326865
    Abstract: A film peeling device preventing deformation or other defect of substrates occurring in the process of conveying films adhered up to the substrate leading ends while peeling from the substrate, protecting the substrate from damage, and avoiding deterioration of the substrate quality. The constitution is composed of a substrate holding mechanism for holding the leading end of a substrate by linear contact, an adhering and peeling mechanism for peeling films by an adhesive force from the substrate held by the substrate holding mechanism, a film holding tool for gripping individually the leading ends of the films adhered to the substrate both sides being wound and lifted by the adhering and peeling mechanism, a film conveying unit drive mechanism for conveying the film holding tool gripping the films in the substrate opposite direction conveying direction, and a recovery container accommodating the films being gripped and conveyed by the film holding tool.
    Type: Application
    Filed: March 23, 2017
    Publication date: November 16, 2017
    Applicant: HITACHI PLANT MECHANICS CO., LTD.
    Inventors: Toshiaki AYABE, Kazuo TAKAHASHI, Shigenori TAKESUE
  • Patent number: 9810159
    Abstract: An apparatus for controlling a gas turbine combustor having a diffusion combustion burner and a premix combustion burner comprising: a rotating speed detector for detecting a rotating speed of gas turbine, a recorder for recording the detected value of the rotating speed of gas turbine detected by the rotating speed detector, an arithmetic unit for calculating a change with time of the rotating speed of gas turbine in accordance with details of the detected value of the rotating speed of gas turbine recorded in the recorder, and a fuel control unit for judging a starting situation of reduction in the rotating speed of gas turbine on the basis of the change with time of the rotating speed of gas turbine calculated by the arithmetic unit and controlling respectively a fuel flow rate for the diffusion combustion burner to be fed to the diffusion combustion burner installed in the gas turbine combustor and a fuel flow rate for the premix combustion to be fed to the premix combustion burner.
    Type: Grant
    Filed: February 13, 2015
    Date of Patent: November 7, 2017
    Assignee: Mitsubishi Hitachi Power Systems, Ltd.
    Inventors: Tatsuya Sekiguchi, Shouhei Yoshida, Yoshitaka Hirata, Akinori Hayashi, Nozomi Saitou, Kazuo Takahashi, Takeo Saitou
  • Patent number: 9732637
    Abstract: A waste heat recovery system includes: a heater which evaporates a working medium by exchanging heat between supercharged air supplied to an engine and the working medium; an expander which expands the working medium which has flowed out from the heater; a power recovery device connected to the expander; a condenser which condenses the working medium which has flowed out from the expander; a cooling medium supply pipe for supplying a cooling medium to an air cooler which cools the supercharged air which has flowed out from the heater; a cooling medium pump which is provided in the cooling medium supply pipe and which sends the cooling medium to the air cooler; and a branch pipe which bifurcates a part of the cooling medium flowing in the cooling medium supply pipe, to the condenser, in such a manner that the working medium is cooled by the cooling medium.
    Type: Grant
    Filed: March 19, 2015
    Date of Patent: August 15, 2017
    Assignees: Kobe Steel, Ltd., MIURA Co., Ltd., ASAHI SHIPPING CO., LTD., TSUNEISHI SHIPBUILDING Co., Ltd.
    Inventors: Yuji Tanaka, Kazuo Takahashi, Ryo Fujisawa, Shigeto Adachi, Yutaka Narukawa
  • Publication number: 20170159562
    Abstract: A two-shaft gas turbine having a steam injection mechanism, comprising: a compressor having an inlet guide vane, a combustor, turbines, a heat recovery steam generator, a steam valve to control a flow rate of steam to be supplied to the combustor, a fuel valve to control a flow rate of fuel to be supplied to the combustor, characterized in that, the two-shaft gas turbine further comprising: a rotational frequency meter, a flow rate meter to measure the flow rate of the steam to be supplied to the combustor from the heat recovery steam generator, an inlet guide vane position gauge provided to the compressor, a steam valve position gauge, and a control system calculates and outputs command signals to operate openings of the fuel valve, the steam valve, and the inlet guide vane based on measurement signals obtained by the rotational frequency meter, the inlet guide vane position gauge, or the steam valve position gauge, and an output increase command value to the gas turbine.
    Type: Application
    Filed: December 1, 2016
    Publication date: June 8, 2017
    Inventors: Kazuo TAKAHASHI, Shinichi HIGUCHI, Chihiro MYOREN, Ryou AKIYAMA, Takuya TAKEDA
  • Patent number: 9666787
    Abstract: A sensor device and an electronic apparatus by which downsizing and a reduction in costs can be achieved is provided. A sensor device according to an embodiment of the present technology includes a sensor element and a semiconductor element. The semiconductor element includes a first surface, a second surface, and a via-hole. The first surface includes a first terminal on which the sensor element is mounted and is an inactive surface. The second surface includes a second terminal for external connection and is an active surface. The via-hole electrically connects the first surface and the second surface to each other.
    Type: Grant
    Filed: March 20, 2014
    Date of Patent: May 30, 2017
    Assignee: Sony Corporation
    Inventors: Hidetoshi Kabasawa, Hiroshi Ozaki, Kazuo Takahashi, Satoshi Mitani
  • Publication number: 20170130650
    Abstract: When a combustion pressure sensor is formed that includes at least: a case member which has a joint surface on the side of a tip end and in which an opening portion is provided; a joint surface which is brought into planar contact with the joint surface of the case member so as to block the opening portion; a pressure reception member on which a combustion pressure acts; a welding portion in which the joint surfaces are joined to each other; and a piezoelectric element which is stored in the case member and converts a pressing force based on the combustion pressure transmitted from the pressure reception member into a signal, on the side of one edge side in at least the one joint surface, the one joint surface is limited to a given depth of welding from the other edge side, a predetermined clearance portion is provided so as to form a predetermined gap with the opposite other joint surface and a welding portion is provided which includes at least all the limited joint surface from the other edge side in the o
    Type: Application
    Filed: March 25, 2015
    Publication date: May 11, 2017
    Applicants: CITIZEN FINEDEVICE CO., LTD., CITIZEN HOLDINGS CO., LTD.
    Inventors: Kazuo TAKAHASHI, Yoshihiko SOGA
  • Publication number: 20170108408
    Abstract: An in-cylinder pressure detecting apparatus for detecting a pressure in a combustion chamber of an internal combustion engine is provided. The in-cylinder pressure detecting apparatus includes a pressure detecting element mounted on a fuel injection device which injects fuel into the combustion chamber; and an amplifying circuit unit having an amplifying circuit which amplifies a signal output from the pressure detecting element and outputs a pressure detection signal. An in-cylinder pressure detecting unit including the pressure detecting element, the amplifying circuit unit, and a connecting member connecting the pressure detecting element with the amplifying circuit unit, is integrated with the fuel injection device, and an external surface of the amplifying circuit unit is shielded with metal thin film.
    Type: Application
    Filed: September 28, 2016
    Publication date: April 20, 2017
    Inventors: Shusuke AKAZAKI, Kazuo TAKAHASHI, Masanori YOMOYAMA, Tetsuya AIBA, Satoshi SUE
  • Publication number: 20170089295
    Abstract: A heat energy recovery system includes an evaporator, a superheater, an expander, a power recovery device, a condenser, a pump, and a controller. The controller includes: an engine load calculation section; a maximum rotation speed determination section for determining a maximum rotation speed of the pump which is obtained when a pinch temperature reaches a target pinch temperature, based on a relational expression representing a relationship between the engine load and the maximum rotation speed, and an engine load; and a rotation speed regulation section for regulating the rotation speed of the pump in such a way as to allow the degree of superheat of the working medium flowing into the expander to be equal to or greater than a reference value, and to allow the rotation speed to be equal to or less than a maximum rotation speed determined by the maximum rotation speed determination section.
    Type: Application
    Filed: August 17, 2016
    Publication date: March 30, 2017
    Applicants: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.), ASAHI SHIPPING CO., LTD., TSUNEISHI SHIPBUILDING Co., Ltd., MIURA Co., Ltd.
    Inventors: Yuji TANAKA, Kazuo TAKAHASHI, Shigeto ADACHI, Yutaka NARUKAWA
  • Publication number: 20170077750
    Abstract: The dual-shaft gas turbine power generation system includes: a high-pressure gas turbine; a first rotating shaft connecting a compressor and the high-pressure gas turbine; an electric motor connected to the first rotating shaft; a governor which adjusts the amount of air taken into the compressor; a low-pressure gas turbine; a second rotating shaft connected to the low-pressure gas turbine; a synchronous power generator connected to the second rotating shaft; a frequency converter which converts the frequency of power transmitted between the synchronous power generator and the electric motor; and a control device which controls a frequency converter control device for controlling the frequency converter, and the governor, on the basis of a power output command value indicating the power to be outputted to an external grid.
    Type: Application
    Filed: November 4, 2016
    Publication date: March 16, 2017
    Inventors: Noriaki HINO, Naohiro KUSUMI, Kazuo TAKAHASHI, Tomomichi ITO
  • Publication number: 20170016353
    Abstract: A thermal energy recovery device capable of suppressing a rapid increase of thermal stress generated in an evaporator when the operation is started and a start-up method thereof are provided. The thermal energy recovery device includes an evaporator, a preheater, an energy recovery unit, a circulating flow path, a pump, a heating medium flow path for supplying a heating medium to the evaporator and the preheater, a flow adjustment unit provided in a portion on the upstream side than the evaporator within the heating medium flow path, and a control unit. The control unit controls the flow adjustment unit so that the inflow amount of the heating medium in a gas-phase to the evaporator gradually increases, in a state that the pump is stopped, until the temperature of the evaporator becomes a specified value.
    Type: Application
    Filed: June 17, 2016
    Publication date: January 19, 2017
    Applicant: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)
    Inventors: Kazuo TAKAHASHI, Shigeto ADACHI, Yutaka NARUKAWA, Eiji KANKI, Shirohiko OKAMOTO
  • Patent number: 9520757
    Abstract: The dual-shaft gas turbine power generation system includes: a high-pressure gas turbine; a first rotating shaft connecting a compressor and the high-pressure gas turbine; an electric motor connected to the first rotating shaft; a governor which adjusts the amount of air taken into the compressor; a low-pressure gas turbine; a second rotating shaft connected to the low-pressure gas turbine; a synchronous power generator connected to the second rotating shaft; a frequency converter which converts the frequency of power transmitted between the synchronous power generator and the electric motor; and a control device which controls a frequency converter control device for controlling the frequency converter, and the governor, on the basis of a power output command value indicating the power to be outputted to an external grid.
    Type: Grant
    Filed: August 3, 2012
    Date of Patent: December 13, 2016
    Assignee: Hitachi, Ltd.
    Inventors: Noriaki Hino, Naohiro Kusumi, Kazuo Takahashi, Tomomichi Ito
  • Publication number: 20160222892
    Abstract: An in-cylinder pressure detecting apparatus for detecting a pressure in a combustion chamber of an internal combustion engine is provided. The in-cylinder pressure detecting apparatus comprises a pressure detecting element mounted on a tip-portion of a fuel injection device which injects fuel into the combustion chamber, and an amplifying circuit unit having an amplifying circuit which amplifies a signal output from the pressure detecting element and outputs a pressure detection signal. An in-cylinder pressure detecting unit integrated fuel injection device is configured by integrating an in-cylinder pressure detecting unit with the fuel injection device. The in-cylinder pressure detecting unit includes the pressure detecting element, the amplifying circuit unit, and a connecting member connecting the pressure detecting element with the amplifying circuit unit. The in-cylinder pressure detecting unit integrated fuel injection device is mounted on the internal combustion engine.
    Type: Application
    Filed: March 26, 2015
    Publication date: August 4, 2016
    Applicants: HONDA MOTOR CO., LTD., CITIZEN FINEDEVICE CO., LTD., CITIZEN HOLDINGS CO., LTD.
    Inventors: Shusuke AKAZAKI, Masanori YOMOYAMA, Tetsuya AIBA, Kazuo TAKAHASHI, Takayuki HAYASHI
  • Patent number: 9371745
    Abstract: A vaporization method includes a preparing step of preparing a vaporizing tube that covers at least a part of a heat exchange unit for cold energy of a Stirling engine and is capable of forming an ascending flow of the liquid flowing from a bottom to a top of the heat exchange unit for cold energy, and a vaporizing step of feeding the liquid in the vaporizing tube to thereby form the ascending flow and bringing the liquid into contact with the Stirling engine to vaporize the liquid. In the preparing step, a flowing direction of the ascending flow is adjusted to suppress occurrence of separated flows of the liquid and gas in the vaporizing tube. In the vaporizing step, the liquid is fed at a flow velocity at which a gas-liquid two-phase flow in which the liquid and the gas are mixed is formed in the vaporizing tube.
    Type: Grant
    Filed: May 27, 2011
    Date of Patent: June 21, 2016
    Assignees: Kobe Steel, Ltd., CHUBU ELECTRIC POWER COMPANY, INCORPORATED
    Inventors: Kazuo Takahashi, Norio Oiwa
  • Patent number: 9359953
    Abstract: Disclosed is a solar assisted combined cycle power plant having a compressor that pressurizes combustion air, a combustor that mixes and burns the combustion air and gas turbine fuel to generate a high-temperature combustion gas, a gas turbine that drives the compressor by using the combustion gas, an exhaust heat recovery steam generator that obtains steam from thermal energy of a gas exhausted from the gas turbine, and a steam turbine that is driven by using the steam obtained by the exhaust heat recovery steam generator. The solar assisted combined cycle power plant includes a solar collector to turn supplied water to warm water; a heat accumulator that stores pressurized hot water from the solar collector and the exhaust heat recovery steam generator; and a spray device that handles the pressurized hot water as spray water and sprays the spray water onto the air to be taken into the compressor.
    Type: Grant
    Filed: September 30, 2010
    Date of Patent: June 7, 2016
    Assignee: Mitsubishi Hitachi Power Systems, Ltd.
    Inventors: Yasuhiro Yoshida, Yukinori Katagiri, Tatsurou Yashiki, Takuya Yoshida, Kazuo Takahashi, Naohiro Kusumi, Takaaki Sekiai
  • Publication number: 20160155927
    Abstract: A sensor device and an electronic apparatus by which downsizing and a reduction in costs can be achieved is provided. A sensor device according to an embodiment of the present technology includes a sensor element and a semiconductor element. The semiconductor element includes a first surface, a second surface, and a via-hole. The first surface includes a first terminal on which the sensor element is mounted and is an inactive surface. The second surface includes a second terminal for external connection and is an active surface. The via-hole electrically connects the first surface and the second surface to each other.
    Type: Application
    Filed: March 20, 2014
    Publication date: June 2, 2016
    Inventors: Hidetoshi KABASAWA, Hiroshi OZAKI, Kazuo TAKAHASHI, Satoshi MITANI
  • Patent number: 9337803
    Abstract: A piezoelectric device includes a vibrator, a piezoelectric drive unit, and a first piezoelectric detector. The vibrator includes a first surface, a first groove formed along a first axis direction, and a second groove formed to be parallel to the first groove. The piezoelectric drive unit includes a first electrode pair provided in the first groove and opposed to each other in a second axis direction orthogonal to the first axis direction and parallel to the first surface, and a first piezoelectric body provided between the first electrode pair, and is capable of vibrating the vibrator. The first piezoelectric detector includes a second electrode pair provided in the second groove and opposed to each other in the second axis direction, and a second piezoelectric body provided between the second electrode pair, and is capable of detecting a vibration of the vibrator.
    Type: Grant
    Filed: June 2, 2014
    Date of Patent: May 10, 2016
    Assignee: Sony Corporation
    Inventors: Kazuo Takahashi, Satoshi Mitani, Hidetoshi Kabasawa
  • Publication number: 20160041567
    Abstract: A gas turbine generation system has a three-phase generator whose rotor is mechanically coupled to a gas turbine. The system comprises a three-phase voltage balancing circuit having elements independently operable for each phase to disperse or cancel unbalanced components of three-phase current, during unbalanced fault in a power grid connected to the generator, result in balancing of the three-phase voltage; and the voltage balancing constitutes a mechanism of avoiding the occurrence of the rotor vibration from mechanical resonance points on turbine blades.
    Type: Application
    Filed: April 5, 2013
    Publication date: February 11, 2016
    Applicant: Hitachi, Ltd.
    Inventors: Aung KO THET, Tomomichi ITOU, Noriaki HINO, Naohiro KUSUMI, Tetsuro MORISAKI, Kazuo TAKAHASHI
  • Patent number: 9222424
    Abstract: An internal combustion engine fitted with a combustion pressure detection device includes: an internal combustion engine having a combustion chamber, a pressure detection device having a housing, a diaphragm, and a detection member, and having a shoulder part. The diaphragm is provided on the front end side of the housing and the detection member arranged inside the housing and behind the diaphragm, allowing it to detect the pressure working via the diaphragm. Also provided is a second seal member in a ring shape that seals the opening in the combustion chamber and the housing in the shoulder part of the housing in the pressure detection device.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: December 29, 2015
    Assignees: CITIZEN FINEDEVICE CO., LTD., CITIZEN HOLDINGS CO., LTD.
    Inventors: Kazuo Takahashi, Yoshihiko Soga, Tsuyoshi Misaizu