Patents by Inventor Seiji Sesaki

Seiji Sesaki 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).

  • Vehicle seat
    Patent number: 6676218
    Abstract: An object of the present invention is to minimize the dependency of the vibration characteristic exhibited by the sheet-shaped supporting member supported by the metal springs on the added load. In a plurality of metal springs 41 to 44 supporting a sheet-shaped supporting member 30, a third metal spring 43 provided on the position to support the vicinity of the greater trochanter of the seated person is provided in a manner that an engagement portion with a frame member is positioned lower than the engagement portion with the sheet-shaped supporting member 30 when no load is applied. Accordingly, the feeling of something foreign created by such a third metal spring 43 can be reduced, and within a predetermined range of the added load, the third metal spring does not work functionally because respective engagement portions 43a and 43b take their positional relationship to be substantially horizontal in a static seating state, while it works functionally when the added load exceeds the above-described range.
    Type: Grant
    Filed: January 22, 2002
    Date of Patent: January 13, 2004
    Assignee: Delta Tooling Co., Ltd.
    Inventors: Etsunori Fujita, Seiji Kawsaki, Seiji Sesaki, Tatsuya Oda, Yuji Ikeda
  • Vehicle seat
    Publication number: 20020135218
    Abstract: An object of the present invention is to minimize the dependency of the vibration characteristic exhibited by the sheet-shaped supporting member supported by the metal springs on the added load. In a plurality of metal springs 41 to 44 supporting a sheet-shaped supporting member 30, a third metal spring 43 provided on the position to support the vicinity of the greater trochanter of the seated person is provided in a manner that an engagement portion with a frame member is positioned lower than the engagement portion with the sheet-shaped supporting member 30 when no load is applied. Accordingly, the feeling of something foreign created by such a third metal spring 43 can be reduced, and within a predetermined range of the added load, the third metal spring does not work functionally because respective engagement portions 43a and 43b take their positional relationship to be substantially horizontal in a static seating state, while it works functionally when the added load exceeds the above-described range.
    Type: Application
    Filed: January 22, 2002
    Publication date: September 26, 2002
    Applicant: DELTA TOOLING CO., LTD.
    Inventors: Etsunori Fujita, Seiji Kawasaki, Seiji Sesaki, Tatsuya Oda, Yuji Ikeda