Patents by Inventor Shinji Saeki

Shinji Saeki 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: 10948099
    Abstract: A motor operated valve includes a feed screw mechanism and a stopper mechanism. The feed screw mechanism includes a guiding part including an external thread portion on an outer surface thereof, and a guided part that is a cylindrical member constituting a rotation shaft of a rotor, and including an internal thread portion, which is engaged with the external thread portion, on an inner surface thereof. The stopper mechanism includes a stopper portion provided on the guided part, and a stopping face formed integrally with the guiding part. When a valve element is driven by the motor to move in a valve closing direction, the stopping face stops the stopper portion to restrict the movement of the rotor in the valve closing direction.
    Type: Grant
    Filed: February 4, 2020
    Date of Patent: March 16, 2021
    Assignee: TGK CO., LTD.
    Inventors: Michio Matsumoto, Shinji Saeki, Youichi Miura, Tomohiro Yuasa
  • Patent number: 10801480
    Abstract: A control valve includes: a body having a main passage through which a discharge chamber and a control chamber communicate, and a sub-passage through which the control chamber and a suction chamber communicate; a main valve seat provided in the main passage; a main valve element configured to touch and leave the main valve seat to close and open a main valve; a sub-valve seat provided in the sub-passage; a sub-valve element configured to touch and leave the sub-valve seat to close and open a sub-valve; a solenoid configured to generate a drive force in a valve closing direction of the main valve; an actuating rod for transmitting the drive force of the solenoid to the main valve element and the sub-valve element; a spring for applying a biasing force to the main valve in a valve opening direction; a spring for applying a biasing force to the sub-valve in a valve closing direction; and a differential pressure valve opening mechanism configured to open the sub-valve when a pressure difference between a control
    Type: Grant
    Filed: October 5, 2018
    Date of Patent: October 13, 2020
    Assignee: TGK Co., LTD.
    Inventors: Ryota Sugamura, Shinji Saeki, Masaaki Tonegawa
  • Publication number: 20200263800
    Abstract: A motor operated valve includes a feed screw mechanism and a stopper mechanism. The feed screw mechanism includes a guiding part including an external thread portion on an outer surface thereof, and a guided part that is a cylindrical member constituting a rotation shaft of a rotor, and including an internal thread portion, which is engaged with the external thread portion, on an inner surface thereof. The stopper mechanism includes a stopper portion provided on the guided part, and a stopping face formed integrally with the guiding part. When a valve element is driven by the motor to move in a valve closing direction, the stopping face stops the stopper portion to restrict the movement of the rotor in the valve closing direction.
    Type: Application
    Filed: February 4, 2020
    Publication date: August 20, 2020
    Inventors: Michio MATSUMOTO, Shinji SAEKI, Youichi MIURA, Tomohiro YUASA
  • Patent number: 10557463
    Abstract: A control valve includes: a body having a main passage through which a discharge chamber and a control chamber communicate, and a sub-passage through which the control chamber and a suction chamber communicate; a main valve seat provided in the main passage; a main valve element configured to touch and leave the main valve seat to close and open a main valve; a sub-valve seat provided in the sub-passage; a sub-valve element configured to touch and leave the sub-valve seat to close and open a sub-valve; a solenoid configured to generate a drive force in a valve closing direction of the main valve; an actuating rod for transmitting the drive force of the solenoid to the main valve element and the sub-valve element; a spring for applying a biasing force to the main valve in a valve opening direction; a spring for applying a biasing force to the sub-valve in a valve closing direction; and a differential pressure valve opening mechanism configured to open the sub-valve when a pressure difference between a control
    Type: Grant
    Filed: October 5, 2018
    Date of Patent: February 11, 2020
    Assignee: TGK CO., LTD.
    Inventors: Ryota Sugamura, Shinji Saeki, Masaaki Tonegawa
  • Publication number: 20190040853
    Abstract: A control valve includes: a body having a main passage through which a discharge chamber and a control chamber communicate, and a sub-passage through which the control chamber and a suction chamber communicate; a main valve seat provided in the main passage; a main valve element configured to touch and leave the main valve seat to close and open a main valve; a sub-valve seat provided in the sub-passage; a sub-valve element configured to touch and leave the sub-valve seat to close and open a sub-valve; a solenoid configured to generate a drive force in a valve closing direction of the main valve; an actuating rod for transmitting the drive force of the solenoid to the main valve element and the sub-valve element; a spring for applying a biasing force to the main valve in a valve opening direction; a spring for applying a biasing force to the sub-valve in a valve closing direction; and a differential pressure valve opening mechanism configured to open the sub-valve when a pressure difference between a control
    Type: Application
    Filed: October 5, 2018
    Publication date: February 7, 2019
    Inventors: Ryota Sugamura, Shinji Saeki, Masaaki Tonegawa
  • Publication number: 20190040852
    Abstract: A control valve includes: a body having a main passage through which a discharge chamber and a control chamber communicate, and a sub-passage through which the control chamber and a suction chamber communicate; a main valve seat provided in the main passage; a main valve element configured to touch and leave the main valve seat to close and open a main valve; a sub-valve seat provided in the sub-passage; a sub-valve element configured to touch and leave the sub-valve seat to close and open a sub-valve; a solenoid configured to generate a drive force in a valve closing direction of the main valve; an actuating rod for transmitting the drive force of the solenoid to the main valve element and the sub-valve element; a spring for applying a biasing force to the main valve in a valve opening direction; a spring for applying a biasing force to the sub-valve in a valve closing direction; and a differential pressure valve opening mechanism configured to open the sub-valve when a pressure difference between a control
    Type: Application
    Filed: October 5, 2018
    Publication date: February 7, 2019
    Inventors: Ryota Sugamura, Shinji Saeki, Masaaki Tonegawa
  • Patent number: 10113539
    Abstract: A control valve includes: a body having a main passage through which a discharge chamber and a control chamber communicate, and a sub-passage through which the control chamber and a suction chamber communicate; a main valve seat provided in the main passage; a main valve element configured to touch and leave the main valve seat to close and open a main valve; a sub-valve seat provided in the sub-passage; a sub-valve element configured to touch and leave the sub-valve seat to close and open a sub-valve; a solenoid configured to generate a drive force in a valve closing direction of the main valve; an actuating rod for transmitting the drive force of the solenoid to the main valve element and the sub-valve element; a spring for applying a biasing force to the main valve in a valve opening direction; a spring for applying a biasing force to the sub-valve in a valve closing direction; and a differential pressure valve opening mechanism configured to open the sub-valve when a pressure difference between a control
    Type: Grant
    Filed: March 23, 2016
    Date of Patent: October 30, 2018
    Assignee: TGK CO., LTD.
    Inventors: Ryota Sugamura, Shinji Saeki, Masaaki Tonegawa
  • Patent number: 10107534
    Abstract: A pipe mounting structure of an embodiment allows a pipe, which is connected to an outlet side of an evaporator, to be mounted on a second passage of an expansion valve in such a manner that the pipe is inserted into an inlet port, and allows a pipe, which is connected to an inlet side of a compressor, to be mounted on the second passage in such a manner that the pipe is inserted into an outlet port. These pipes are mounted so that the pipes face each other with a shaft therebetween. The pipe mounting structure includes a natural vibration suppressing structure configured to prevent or suppress natural vibration of a gas column having antinodes of a standing wave at an open end of one of the pipes and an open end of the other pipe.
    Type: Grant
    Filed: February 1, 2016
    Date of Patent: October 23, 2018
    Assignee: TGK CO., LTD.
    Inventors: Takanao Kumakura, Takeshi Kaneko, Ryosuke Satake, Shinji Saeki, Takeshi Watanabe, Takafumi Jyonouchi
  • Patent number: 9903362
    Abstract: In a control valve, the spring load of a spring, which biases a main valve element in a valve opening direction, is regulated, for instance. This allows a range of suction pressures Ps, where a main valve and a sub-valve are simultaneously closed until a sub-valve element is lifted from a sub-valve seat after a main valve element has been seated on a main valve seat, to be set as a deadband. The control valve is configured such that the value of a suction pressure Ps with which to open the sub-valve after the closing of the main valve and the pressure values at which the deadband takes place are set variably by the setting of a value of current supplied to the solenoid.
    Type: Grant
    Filed: July 3, 2014
    Date of Patent: February 27, 2018
    Assignee: TGK CO., LTD.
    Inventors: Shinji Saeki, Masaaki Tonegawa
  • Patent number: 9863411
    Abstract: A control valve is configured such that a suction pressure, which is used to displace a sub-valve element in a valve opening direction after a main valve has been closed, is varied according to a value of current supplied to a solenoid. A crankcase communication port, which communicates with a crankcase of a compressor, and a suction chamber communication port, which communicates with a suction chamber of the compressor, are provided in a body. A sub-valve chamber whose diameter is larger than that of the main valve hole is formed between the crankcase communication port and a main valve hole, and a sub-valve is placed in the sub-valve chamber.
    Type: Grant
    Filed: June 18, 2014
    Date of Patent: January 9, 2018
    Assignee: TGK CO., LTD.
    Inventors: Shinji Saeki, Masaaki Tonegawa
  • Patent number: 9732874
    Abstract: A control valve according to an exemplary embodiment includes an interlocking mechanism that achieves a first operation and a second operation simultaneously or continuously. In the first operation, a sub-valve is opened by having an actuating rod displaced integrally with a sub-valve element in accordance with the magnitude of solenoidal force. In the second operation, a load, by which to bias a main valve element in a closing direction of a main valve, is increased by displacing the actuating rod relative to the main valve element.
    Type: Grant
    Filed: November 14, 2013
    Date of Patent: August 15, 2017
    Assignee: TGK CO., LTD.
    Inventors: Shinji Saeki, Yuuki Kaneko, Masaaki Tonegawa
  • Patent number: 9551518
    Abstract: A first expansion valve is provided in a first refrigerant circulation passage through which the refrigerant discharged from a compressor is able to circulate by passing sequentially through an external heat exchanger and an evaporator and returning to the compressor. A second expansion valve is provided in a second refrigerant circulation passage through which the refrigerant discharged from the compressor is able to circulate by passing sequentially through an auxiliary condenser and the external heat exchanger and returning to the compressor. The second expansion valve regulates the valve opening degree such that the refrigerant state at an inlet side of the compressor during a heating operation is in a range where the dryness of refrigerant is greater than or equal to 0.9 and the superheat of refrigerant is less than or equal to 5° C.
    Type: Grant
    Filed: April 18, 2014
    Date of Patent: January 24, 2017
    Assignee: TGK Co., Ltd.
    Inventors: Satoshi Hayakawa, Akihiko Yamamoto, Ryouta Sugamura, Masaaki Tonegawa, Toshiyuki Shiota, Shinji Saeki, Takeshi Kaneko, Takanao Kumakura
  • Publication number: 20160290326
    Abstract: A control valve includes: a body having a main passage through which a discharge chamber and a control chamber communicate, and a sub-passage through which the control chamber and a suction chamber communicate; a main valve seat provided in the main passage; a main valve element configured to touch and leave the main valve seat to close and open a main valve; a sub-valve seat provided in the sub-passage; a sub-valve element configured to touch and leave the sub-valve seat to close and open a sub-valve; a solenoid configured to generate a drive force in a valve closing direction of the main valve; an actuating rod for transmitting the drive force of the solenoid to the main valve element and the sub-valve element; a spring for applying a biasing force to the main valve in a valve opening direction; a spring for applying a biasing force to the sub-valve in a valve closing direction; and a differential pressure valve opening mechanism configured to open the sub-valve when a pressure difference between a control
    Type: Application
    Filed: March 23, 2016
    Publication date: October 6, 2016
    Inventors: Ryota Sugamura, Shinji Saeki, Masaaki Tonegawa
  • Publication number: 20160231037
    Abstract: A pipe mounting structure of an embodiment allows a pipe, which is connected to an outlet side of an evaporator, to be mounted on a second passage of an expansion valve in such a manner that the pipe is inserted into an inlet port, and allows a pipe, which is connected to an inlet side of a compressor, to be mounted on the second passage in such a manner that the pipe is inserted into an outlet port. These pipes are mounted so that the pipes face each other with a shaft therebetween. The pipe mounting structure includes a natural vibration suppressing structure configured to prevent or suppress natural vibration of a gas column having antinodes of a standing wave at an open end of one of the pipes and an open end of the other pipe.
    Type: Application
    Filed: February 1, 2016
    Publication date: August 11, 2016
    Inventors: Takanao Kumakura, Takeshi Kaneko, Ryosuke Satake, Shinji Saeki, Takeshi Watanabe, Takafumi Jyonouchi
  • Patent number: 9376737
    Abstract: Provided is a method for producing a zinc alloy capable of obtaining a Zn—Si alloy having a uniform composition. Metal Zn is melted in a crucible (2) provided in a heating furnace (1) to obtain a Zn molten metal (4). Floating of a metal Si powder (6) added to the Zn molten metal (4) is suppressed by a floating suppressing member (5). Heating is performed while a liquid surface of the Zn molten metal (4) is coated with a carbonaceous material (9), thereby melting the metal Si powder (6). The suppression of the floating of the metal Si powder (6) is released to allow the melted Si to be dispersed in the Zn molten metal (4), thereby obtaining a Zn—Si alloy molten metal (11). A copper casting mold (12) is filled with the Zn—Si alloy molten metal (11), and is rapidly cooled down to obtain a billet.
    Type: Grant
    Filed: April 9, 2014
    Date of Patent: June 28, 2016
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Tokuji Okumura, Taisei Wakisaka, Masahito Mutou, Taiji Mizuta, Yasunari Mizuta, Shinji Saeki, Hiroyasu Taniguchi, Yoshiaki Ito
  • Publication number: 20160053347
    Abstract: Provided is a method for producing a zinc alloy capable of obtaining a Zn—Si alloy having a uniform composition. Metal Zn is melted in a crucible (2) provided in a heating furnace (1) to obtain a Zn molten metal (4). Floating of a metal Si powder (6) added to the Zn molten metal (4) is suppressed by a floating suppressing member (5). Heating is performed while a liquid surface of the Zn molten metal (4) is coated with a carbonaceous material (9), thereby melting the metal Si powder (6). The suppression of the floating of the metal Si powder (6) is released to allow the melted Si to be dispersed in the Zn molten metal (4), thereby obtaining a Zn—Si alloy molten metal (11). A copper casting mold (12) is filled with the Zn—Si alloy molten metal (11), and is rapidly cooled down to obtain a billet.
    Type: Application
    Filed: April 9, 2014
    Publication date: February 25, 2016
    Applicant: HOMDA MOTOR CO., LTD.
    Inventors: Tokuji Okumura, Taisei Wakisaka, Masahito Mutou, Taiji Mizuta, Yasunari Mizuta, Shinji Saeki, Hiroyasu Taniguchi, Yoshiaki Ito
  • Publication number: 20150096630
    Abstract: An electromagnetic valve according to one embodiment includes a driven member configured such that a piston and a valve element are vertically coupled with each other and configured such that a pilot passage runs through the driven member. Here, the piston separates a high-pressure chamber from a back pressure chamber. The valve element opens and closes a main valve by moving toward and away from a valve hole. The pilot passage communicates between a low-pressure chamber and the back pressure chamber. A communicating path, through which the high-pressure chamber and the back pressure chamber communicate with each other, is formed in the piston. The communicating path is formed such that an orifice, which is open to the back pressure chamber, and a communication hole, having a larger cross section than that of the orifice, are vertically connected with each other. The orifice is located above the communication hole.
    Type: Application
    Filed: October 3, 2014
    Publication date: April 9, 2015
    Inventors: Hirofumi OGAWA, Shinji SAEKI, Toshihiro ANDOH, Shigeru ABE, Tomohiro YUASA
  • Patent number: 8967774
    Abstract: A liquid jet head includes an actuator substrate having ejection grooves and non-ejection grooves partitioned by walls each including a piezoelectric body. The non-ejection grooves have, at ends on one side thereof, respective inclined surfaces rising from bottom surfaces thereof to upper surface openings at upper portions thereof. Common electrodes are provided in a strip form along a longitudinal direction of the walls on both side surfaces of the walls facing the ejection grooves, and active electrodes are provided in a strip form along the longitudinal direction of the walls on both side surfaces of the walls facing the non-ejection grooves. The active electrodes extend from positions in the vicinity of the ends on one side of the non-ejection grooves to ends on the other side thereof.
    Type: Grant
    Filed: November 8, 2013
    Date of Patent: March 3, 2015
    Assignee: SII Printek Inc.
    Inventors: Satoshi Horiguchi, Yuki Yamamura, Yuzuru Kubota, Yoshinori Domae, Makoto Suzuki, Ryoichiro Yamashita, Masatoshi Toda, Toshihiko Harajiri, Shinji Saeki
  • Publication number: 20150010410
    Abstract: In a control valve, the spring load of a spring, which biases a main valve element in a valve opening direction, is regulated, for instance. This allows a range of suction pressures Ps, where a main valve and a sub-valve are simultaneously closed until a sub-valve element is lifted from a sub-valve seat after a main valve element has been seated on a main valve seat, to be set as a deadband. The control valve is configured such that the value of a suction pressure Ps with which to open the sub-valve after the closing of the main valve and the pressure values at which the deadband takes place are set variably by the setting of a value of current supplied to the solenoid.
    Type: Application
    Filed: July 3, 2014
    Publication date: January 8, 2015
    Inventors: Shinji Saeki, Masaaki Tonegawa
  • Publication number: 20150004010
    Abstract: A control valve is configured such that a suction pressure, which is used to displace a sub-valve element in a valve opening direction after a main valve has been closed, is varied according to a value of current supplied to a solenoid. A crankcase communication port, which communicates with a crankcase of a compressor, and a suction chamber communication port, which communicates with a suction chamber of the compressor, are provided in a body. A sub-valve chamber whose diameter is larger than that of the main valve hole is formed between the crankcase communication port and a main valve hole, and a sub-valve is placed in the sub-valve chamber.
    Type: Application
    Filed: June 18, 2014
    Publication date: January 1, 2015
    Inventors: Shinji Saeki, Masaaki Tonegawa