Patents by Inventor Kazutaka Hattori

Kazutaka Hattori 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).

  • Publication number: 20200363110
    Abstract: An apparatus using a heat pump includes a refrigerant circuit and a heat medium circuit. The refrigerant circuit is allowed to perform a first operation, in which a load-side heat exchanger is used as a condenser, and a second operation, in which the load-side heat exchanger is used as an evaporator. A container is provided to a suction pipe provided between a refrigerant flow switching device and a compressor. To the heat medium circuit, an overpressure protection device and a refrigerant leakage detecting device are connected. When leakage of refrigerant into the heat medium circuit is detected, the refrigerant flow switching device is switched to a second state, an expansion device is set to a closed state, and the compressor is made in operation.
    Type: Application
    Filed: June 26, 2017
    Publication date: November 19, 2020
    Inventors: Yasuhiro SUZUKI, Hirokazu MINAMISAKO, Kazutaka SUZUKI, Takafumi MITO, Taro HATTORI
  • Publication number: 20200109881
    Abstract: A heat-pump using apparatus includes a refrigerant circuit and a heat medium circuit. The refrigerant circuit is capable of executing a heating operation and a cooling operation. A first expansion device is provided downstream of a reservoir, and a second expansion device is provided upstream of the reservoir, in the flow of refrigerant in the heating operation. A main circuit of the heat medium circuit includes a branching part and a joining part. An overpressure protection device is connected to a connection part which is located between a load-side heat exchanger and one of the branching part and the joining part or at the load-side heat exchanger. A refrigerant leakage detecting device is connected to the other of the branching part and the joining part, or between the other of the branching part and the joining part and the connection part, or to the connection part.
    Type: Application
    Filed: June 19, 2017
    Publication date: April 9, 2020
    Inventors: Yasuhiro SUZUKI, Hirokazu MINAMISAKO, Kazutaka SUZUKI, Takafumi MITO, Taro HATTORI
  • Publication number: 20200080757
    Abstract: An apparatus using a heat pump includes a refrigerant circuit and a heat medium circuit. The refrigerant circuit is capable of performing a first operation, in which a load-side heat exchanger is used as a condenser, and a second operation, in which the load-side heat exchanger is used as an evaporator. A main circuit of the heat medium circuit has a branching part and a joining part. An overpressure protection device and a refrigerant leakage detecting device are connected to the main circuit. The overpressure protection device is connected to a connection part that is located between the load-side heat exchanger and one of the branching part and the joining part, or at the load-side heat exchanger. The refrigerant leakage detecting device is connected to the other of the branching part and the joining part, between the connection part and the other of the branching part and the joining part, or at the connection part.
    Type: Application
    Filed: June 9, 2017
    Publication date: March 12, 2020
    Inventors: Yasuhiro SUZUKI, Hirokazu MINAMISAKO, Kazutaka SUZUKI, Takafumi MITO, Taro HATTORI
  • Publication number: 20190346191
    Abstract: A heat pump apparatus includes: a refrigerant circuit, which is configured to circulate refrigerant, and includes a compressor, a heat source heat exchanger, an expansion mechanism, and an intermediate heat exchanger which are sequentially connected through a pipe; and a fluid circuit, which is configured to circulate a fluid, and includes the intermediate heat exchanger, a load heat exchanger, and a check valve which are sequentially connected through a pipe. A pressure regulating valve is provided to the heat pump apparatus. The pressure regulating valve is connected to a pipe connecting an outlet of the intermediate heat exchanger and an inlet of the load heat exchanger, and is configured to interrupt a flow passage of the fluid when the refrigerant leaks to the fluid, and pressure of the fluid is increased.
    Type: Application
    Filed: December 9, 2016
    Publication date: November 14, 2019
    Inventors: Hirokazu MINAMISAKO, Yasuhiro SUZUKI, Kazutaka SUZUKI, Taro HATTORI
  • Publication number: 20190301750
    Abstract: Provided is a heat pump use apparatus, including a refrigerant circuit, a heat medium circuit, and a heat exchanger configured to exchange heat between refrigerant and a heat medium. A main passage of the heat medium circuit includes a branching portion and a joining portion. A pressure protection device and a refrigerant leakage detection device are connected to the main passage. The pressure protection device is connected to the main passage at a connecting portion located between the heat exchanger and one of the branching portion and the joining portion. A first interruption device configured to be able to interrupt a flow from the heat exchanger to the connecting portion is provided in the main passage at a portion between the heat exchanger and the connecting portion.
    Type: Application
    Filed: December 21, 2016
    Publication date: October 3, 2019
    Applicant: Mitsubishi Electric Corporation
    Inventors: Yasuhiro SUZUKI, Kazutaka SUZUKI, Hirokazu MINAMISAKO, Taro HATTORI
  • Patent number: 10429086
    Abstract: When hot water supply and room heating are requested simultaneously, a hot water supply operation, by which energy saving is achieved without impairing the comfortability in a room, is performed. A heat-pump apparatus of a variable operation capacity type, a primary water circuit, a hot water tank, a room heater, and a controller are provided. The controller sets a hot water supply operation completion target time in the case of a requests for a simultaneous hot water supply and room heating operation, based on a temperature difference between the outdoor air temperature and the indoor temperature, and determines the rotation speed of the compressor in the hot water supply operation completion target time set.
    Type: Grant
    Filed: May 12, 2015
    Date of Patent: October 1, 2019
    Assignee: Mitsubishi Electric Corporation
    Inventors: Jun Yoshida, Taro Hattori, Kazutaka Suzuki, Koji Matsuzawa, Hirokazu Minamisako, Kei Takeyama, Masahiro Hata
  • Publication number: 20190264927
    Abstract: Provided is an indoor unit for a heat pump use apparatus, the indoor unit being a part of the heat pump use apparatus including a refrigerant circuit configured to circulate refrigerant, a heat medium circuit configured to allow a heat medium to flow through the heat medium circuit, and a heat exchanger configured to exchange heat between the refrigerant and the heat medium. The indoor unit is connectable to an outdoor unit accommodating the refrigerant circuit and the heat exchanger. The indoor unit accommodates a part of the heat medium circuit. The indoor unit includes a pressure protection device connected to the heat medium circuit, and an on-off device provided to be interposed between the heat medium circuit and the pressure protection device.
    Type: Application
    Filed: October 17, 2016
    Publication date: August 29, 2019
    Inventors: Yasuhiro SUZUKI, Taro HATTORI, Hirokazu MINAMISAKO, Kazutaka SUZUKI
  • Publication number: 20190220997
    Abstract: A self-position estimation apparatus includes an image capturing unit capturing driving images and reference images at a plurality of positions along a predetermined driving route, a detection unit detecting feature points on each of the driving images and feature points on each of the reference images, a storage unit storing map information which includes the feature points on each of the reference images and a position and a posture of the image capturing unit at a time each of the reference images is captured by the image capturing unit, and an estimation unit selecting a similar image similar to one of the driving images from the reference images to correlate the feature points on the one of the driving images and feature points on the similar image, the estimation unit estimating a position and a posture of an own vehicle a predetermined driving route based on a correlation result.
    Type: Application
    Filed: January 15, 2019
    Publication date: July 18, 2019
    Applicant: AISIN SEIKI KABUSHIKI KAISHA
    Inventors: Shoji ASAI, Shu ASAMI, Yoshikazu HATTORI, Hiroshi ISHIGURO, Kazutaka HAYAKAWA, Takashi SUZUKI
  • Patent number: 10044141
    Abstract: Provided is a connector having excellent abrasion resistance. The invention applies to a connector including a terminal portion electrically connecting two objects to be connected and a connector housing portion in which the terminal portion is accommodated. The connector housing portion has a first housing in which a fixing portion to which a fixed portion formed in the terminal portion is to be fixed is formed and a second housing that engages with a main body-side housing fixed to one of the objects to be connected in a state in which the first housing is accommodated in the second housing.
    Type: Grant
    Filed: February 12, 2016
    Date of Patent: August 7, 2018
    Assignee: J.S.T. Mfg. Co., Ltd.
    Inventors: Satoru Shindo, Shinji Tasaka, Kazutaka Hattori, Hitoshi Ozaki
  • Patent number: 9583869
    Abstract: Provided is a connector having excellent vibration resistance. The invention applies to a connector including a terminal portion and a connector housing in which the terminal portion is accommodated and electrically connecting a first object to be connected and a second object to be connected via the terminal portion. A main body-side male contact is connected to the first object to be connected. A main body-side female contact is connected to the second object to be connected. The terminal portion has a connector-side male contact that is inserted into the main body-side female contact, a connector-side female contact into which the main body-side male contact is inserted, and an elastically deformable joint portion that joins the connector-side male contact and the connector-side female contact to each other.
    Type: Grant
    Filed: February 12, 2016
    Date of Patent: February 28, 2017
    Assignee: J.S.T. MFG. CO., LTD.
    Inventors: Satoru Shindo, Shinji Tasaka, Hitoshi Ozaki, Kazutaka Hattori
  • Publication number: 20160294109
    Abstract: Provided is a connector having excellent vibration resistance. The invention applies to a connector including a terminal portion and a connector housing in which the terminal portion is accommodated and electrically connecting a first object to be connected and a second object to be connected via the terminal portion. A main body-side male contact is connected to the first object to be connected. A main body-side female contact is connected to the second object to be connected. The terminal portion has a connector-side male contact that is inserted into the main body-side female contact, a connector-side female contact into which the main body-side male contact is inserted, and an elastically deformable joint portion that joins the connector-side male contact and the connector-side female contact to each other.
    Type: Application
    Filed: February 12, 2016
    Publication date: October 6, 2016
    Applicant: J.S.T. Mfg. Co., Ltd.
    Inventors: Satoru SHINDO, Shinji TASAKA, Hitoshi OZAKI, Kazutaka HATTORI
  • Publication number: 20160294100
    Abstract: Provided is a connector having excellent abrasion resistance. The invention applies to a connector including a terminal portion electrically connecting two objects to be connected and a connector housing portion in which the terminal portion is accommodated. The connector housing portion has a first housing in which a fixing portion to which a fixed portion formed in the terminal portion is to be fixed is formed and a second housing that engages with a main body-side housing fixed to one of the objects to be connected in a state in which the first housing is accommodated in the second housing.
    Type: Application
    Filed: February 12, 2016
    Publication date: October 6, 2016
    Applicant: J.S.T. Mfg. Co., Ltd.
    Inventors: Satoru SHINDO, Shinji TASAKA, Kazutaka HATTORI, Hitoshi OZAKI
  • Patent number: 7909970
    Abstract: An oxygen sensor is employed for determining whether the exhaust air-fuel ratio is rich or lean. A voltage is applied to the oxygen sensor at device impedance calculation intervals to calculate device impedance. After device impedance calculation, a reverse voltage is applied to the oxygen sensor with a view toward promptly negating the influence of voltage application on the sensor output. Subsequently, the sensor output of the oxygen sensor is sampled at sampling time intervals until it is concluded that the device impedance calculation period is over.
    Type: Grant
    Filed: December 27, 2007
    Date of Patent: March 22, 2011
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Kenji Tashiro, Kazutaka Hattori
  • Patent number: 7901562
    Abstract: A deterioration detection apparatus for an oxygen sensor is able to detect an abnormality of the oxygen sensor constantly with high precision, without being affected by the temperature characteristic of the element impedance. The apparatus applies a voltage V to the oxygen sensor, and calculates an element impedance real value Rsr=V/1 of a sensor element based on the applied voltage and the current I caused to flow by the voltage. The apparatus calculates an element temperature estimated value Tex of the oxygen sensor from a factor that affects the temperature of the oxygen sensor. The apparatus determines whether the oxygen sensor has an abnormality on the basis of whether the relationship between the element impedance real value Rsr and the element temperature estimated value Tex can be regarded as a relationship that agrees with a normal temperature characteristic.
    Type: Grant
    Filed: October 9, 2007
    Date of Patent: March 8, 2011
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventor: Kazutaka Hattori
  • Patent number: 7846313
    Abstract: An oxygen sensor is employed for determining whether the exhaust air-fuel ratio is rich or lean. A voltage is applied to the oxygen sensor at device impedance calculation intervals to calculate device impedance. After device impedance calculation, a reverse voltage is applied to the oxygen sensor with a view toward promptly negating the influence of voltage application on the sensor output. Subsequently, the sensor output of the oxygen sensor is sampled at sampling time intervals until it is concluded that the device impedance calculation period is over.
    Type: Grant
    Filed: December 27, 2007
    Date of Patent: December 7, 2010
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Kenji Tashiro, Kazutaka Hattori
  • Patent number: 7393441
    Abstract: An oxygen sensor is employed for determining whether the exhaust air-fuel ratio is rich or lean. A voltage is applied to the oxygen sensor at device impedance calculation intervals to calculate device impedance. After device impedance calculation, a reverse voltage is applied to the oxygen sensor with a view toward promptly negating the influence of voltage application on the sensor output. Subsequently, the sensor output of the oxygen sensor is sampled at sampling time intervals until it is concluded that the device impedance calculation period is over.
    Type: Grant
    Filed: April 16, 2004
    Date of Patent: July 1, 2008
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Kenji Tashiro, Kazutaka Hattori
  • Publication number: 20080109147
    Abstract: An oxygen sensor is employed for determining whether the exhaust air-fuel ratio is rich or lean. A voltage is applied to the oxygen sensor at device impedance calculation intervals to calculate device impedance. After device impedance calculation, a reverse voltage is applied to the oxygen sensor with a view toward promptly negating the influence of voltage application on the sensor output. Subsequently, the sensor output of the oxygen sensor is sampled at sampling time intervals until it is concluded that the device impedance calculation period is over.
    Type: Application
    Filed: December 27, 2007
    Publication date: May 8, 2008
    Applicant: Toyota Jidosha Kabushiki Kaisha
    Inventors: Kenji Tashiro, Kazutaka Hattori
  • Publication number: 20080109148
    Abstract: An oxygen sensor is employed for determining whether the exhaust air-fuel ratio is rich or lean. A voltage is applied to the oxygen sensor at device impedance calculation intervals to calculate device impedance. After device impedance calculation, a reverse voltage is applied to the oxygen sensor with a view toward promptly negating the influence of voltage application on the sensor output. Subsequently, the sensor output of the oxygen sensor is sampled at sampling time intervals until it is concluded that the device impedance calculation period is over.
    Type: Application
    Filed: December 27, 2007
    Publication date: May 8, 2008
    Applicant: Toyota Jidosha Kabushiki Kaisha
    Inventors: Kenji Tashiro, Kazutaka Hattori
  • Publication number: 20080041134
    Abstract: A deterioration detection apparatus for an oxygen sensor is able to detect an abnormality of the oxygen sensor constantly with high precision, without being affected by the temperature characteristic of the element impedance. The apparatus applies a voltage V to the oxygen sensor, and calculates an element impedance real value Rsr=V/1 of a sensor element based on the applied voltage and the current I caused to flow by the voltage. The apparatus calculates an element temperature estimated value Tex of the oxygen sensor from a factor that affects the temperature of the oxygen sensor. The apparatus determines whether the oxygen sensor has an abnormality on the basis of whether the relationship between the element impedance real value Rsr and the element temperature estimated value Tex can be regarded as a relationship that agrees with a normal temperature characteristic.
    Type: Application
    Filed: October 9, 2007
    Publication date: February 21, 2008
    Applicant: Toyota Jidosha Kabushiki Kaisha
    Inventor: Kazutaka Hattori
  • Patent number: 7297240
    Abstract: A deterioration detection apparatus for an oxygen sensor is able to detect an abnormality of the oxygen sensor constantly with high precision, without being affected by the temperature characteristic of the element impedance. The apparatus applies a voltage V to the oxygen sensor, and calculates an element impedance real value Rsr=V/1 of a sensor element based on the applied voltage and the current I caused to flow by the voltage. The apparatus calculates an element temperature estimated value Tex of the oxygen sensor from a factor that affects the temperature of the oxygen sensor. The apparatus determines whether the oxygen sensor has an abnormality on the basis of whether the relationship between the element impedance real value Rsr and the element temperature estimated value Tex can be regarded as a relationship that agrees with a normal temperature characteristic.
    Type: Grant
    Filed: November 14, 2003
    Date of Patent: November 20, 2007
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventor: Kazutaka Hattori