Patents by Inventor Masato Ikeguchi

Masato Ikeguchi 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).

  • Solenoid actuator
    Patent number: 8081053
    Abstract: A solenoid actuator (1) comprises a case (9) made of a magnetic material and housing a coil (12) wound on a bobbin (11), and a pressure tube (17) made of a non-magnetic material and fitted into a hollow portion of the bobbin (11). A base (2) and a sleeve (3) made of a magnetic material are disposed in the pressure tube (17). A plunger (4) provided in an operation chamber (74, 75) formed in the base (2) and the sleeve (3) strokes according to energization of the coil (12) to axially drive a shaft (5) fixed to the plunger (4). The pressure tube (17) ensures that magnetic flux is transferred between the case (9) and the sleeve (3) while preventing pressure variation in the operation chamber (74, 75) from being transmitted to the bobbin (11), thereby achieving a high response and a pressure tightness in the solenoid actuator (1).
    Type: Grant
    Filed: November 12, 2009
    Date of Patent: December 20, 2011
    Assignee: Kayaba Industry Co., Ltd.
    Inventors: Hideki Yamagata, Mamoru Hosogai, Hideki Tsuchiya, Yoshiharu Miya, Tomoyuki Fujita, Ryuji Naide, Koichiro Akatsuka, Kenji Yazaki, Masato Ikeguchi
  • Solenoid actuator
    Publication number: 20100123535
    Abstract: A solenoid actuator (1) comprises a case (9) made of a magnetic material and housing a coil (12) wound on a bobbin (11), and a pressure tube (17) made of a non-magnetic material and fitted into a hollow portion of the bobbin (11). A base (2) and a sleeve (3) made of a magnetic material are disposed in the pressure tube (17). A plunger (4) provided in an operation chamber (74, 75) formed in the base (2) and the sleeve (3) strokes according to energization of the coil (12) to axially drive a shaft (5) fixed to the plunger (4). The pressure tube (17) ensures that magnetic flux is transferred between the case (9) and the sleeve (3) while preventing pressure variation in the operation chamber (74, 75) from being transmitted to the bobbin (11), thereby achieving a high response and a pressure tightness in the solenoid actuator (1).
    Type: Application
    Filed: November 12, 2009
    Publication date: May 20, 2010
    Applicant: KAYABA INDUSTRY CO., LTD.
    Inventors: Hideki Yamagata, Mamoru Hosogai, Hideki Tsuchiya, Yoshiharu Miya, Tomoyuki Fujita, Ryuji Naide, Koichiro Akatsuka, Kenji Yazaki, Masato Ikeguchi