Patents by Inventor Yuhei Yamakawa

Yuhei Yamakawa 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).

  • Apparatus for manufacturing laminated prepreg members
    Patent number: 5480508
    Abstract: A prepreg tape is firstly prepared by bonding prepreg layer to a backing paper and then the prepreg tape is cut to a depth enough to cut the prepreg tape but not the backing paper. A unnecessary portion of the prepreg tape is removed from the backing paper to obtain a cut prepreg tape. A laminating attachment is moved in a predetermined direction while urging the prepreg tape against the surface of an operating table. The cut prepreg tape is peeled off from the backing paper and the peeled off prepreg tape is bonded to the operating table. The cut prepreg tapes are successively oriented in a predetermined direction and juxtaposed to form a laminated sheet. When the sheet is mounted on a mold of a predetermined shape. When the impregnated thermosetting resin is perfectly cured under heat and pressure a product useful for assembling various vehicles can be obtained.
    Type: Grant
    Filed: August 18, 1994
    Date of Patent: January 2, 1996
    Assignees: Toshiba Kikai Kabushiki Kaisha, Fuji Jukogyo Kabushiki Kaisha
    Inventors: Takao Manabe, Yuhei Yamakawa, Shoichi Shin, Hideyuki Yamada, Mitsuo Nagashima, Mitsunori Kokubo, Masafumi Tsunada, Yasuhiko Nagakura, Yukio Nakajima, Tomohiro Inoue, Kiyoshi Kondo
  • Method for manufacturing laminated prepreg members
    Patent number: 5397415
    Abstract: A prepreg tape is firstly prepared by bonding prepreg layer to a backing paper and then the prepreg tape is cut to a depth enough to cut the prepreg tape but not the backing paper. An unnecessary portion of the prepreg tape is removed from the backing paper to obtain a cut prepreg tape. A laminating attachment is moved in a predetermined direction while urging the prepreg tape against the surface of an operating table. The cut prepreg tape is peeled off from the backing paper and the peeled off prepreg tape is bonded to the operating table. The cut prepreg tapes are successively oriented in a predetermined direction and juxtaposed to form a laminated sheet. The sheet is that mounted on a mold of a predetermined shape. When the impregnated thermosetting resin is perfectly cured under heat and pressure, a product useful for assembling various vehicles can be obtained.
    Type: Grant
    Filed: October 4, 1993
    Date of Patent: March 14, 1995
    Assignees: Toshiba Kikai Kabushiki Kaisha, Fuji Jukogyo Kabushiki Kaisha
    Inventors: Takao Manabe, Yuhei Yamakawa, Shoichi Shin, Hideyuki Yamada, Mitsuo Nagashima, Mitsunori Kokubo, Masafumi Tsunada, Yasuhiko Nagakura, Yukio Nakajima, Tomohiro Inoue, Kiyoshi Kondo