Patents by Inventor Naoya Suda

Naoya Suda 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).

  • Electromagnetic driving device, fluid control valve having same and method of manufacturing same
    Patent number: 6601822
    Abstract: In a magnetic driving device, a fixed core has a housing portion, in which a plunger is housed to reciprocatingly move, and an attracting portion toward which the plunger is attracted upon energizing a coil. The housing portion is provided with a ring portion, which is formed by machining an outer circumference wall thereof and whose thickness is thinner than that of a part of the housing portion adjacent to the ring portion to an extent that mechanical strength of the housing portion is not damaged. The ring portion is provided with a plurality of through-holes penetrating radially the wall thereof. A magnetic flux area of the ring portion is limited due to the thin wall and the through-holes so that magnetic resistance is enlarged.
    Type: Grant
    Filed: March 7, 2001
    Date of Patent: August 5, 2003
    Assignee: Denso Corporation
    Inventors: Seiji Tachibana, Hiroyuki Nakane, Mitsuhiro Watanabe, Naoya Suda, Yoshitaka Kamiya
  • Electromagnetic driving device, fluid control valve having same and method of manufacturing same
    Publication number: 20010022474
    Abstract: In a magnetic driving device, a fixing core has a housing portion, in which a plunger is housed to reciprocatingly move, and an attracting portion toward which the plunger is attracted upon energizing a coil. The housing portion is provided with a ring portion, which is formed by machining an outer circumference wall thereof and whose thickness is thinner than that of a part of the housing portion adjacent to the ring portion to an extent that mechanical strength of the housing portion is not damaged practically. The ring portion is provided with a plurality of through-holes penetrating radially the wall thereof. A magnetic flux area of the ring portion is limited due to the thin wall and the through-holes so that magnetic resistance is enlarged.
    Type: Application
    Filed: March 7, 2001
    Publication date: September 20, 2001
    Inventors: Seiji Tachibana, Hiroyuki Nakane, Mitsuhiro Watanabe, Naoya Suda, Yoshitaka Kamiya