Patents by Inventor Tsuneo Hirai

Tsuneo Hirai 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).

  • Molding apparatus having a movable die and a counter roll
    Patent number: 5533880
    Abstract: A molding device for compacting a fiber reinforced resinous material to form an article of manufacture in which reinforcement fibers contained in the fiber reinforced resinous material are oriented as desired. The device includes a die; a roll opposed to the die; a compressing mechanism for pressing one of the die and the roll against the other of the die and the roll; and driving a mechanism for reciprocating and/or rotating one of the die and the roll relative to the resinous material. In this construction, the fiber reinforced resinous material is shaped into a predetermined configuration by compressing a number of times the fiber reinforced resinous material delivered by the pressing mechanism until the fiber reinforced resinous material is compacted to a predetermined degree of compression.
    Type: Grant
    Filed: July 8, 1994
    Date of Patent: July 9, 1996
    Assignee: Takeda Chemical Industries, Ltd.
    Inventors: Yuzo Hayakawa, Tsuneo Hirai, Tsutao Katayama
  • Molding apparatus for molding fiber reinforced resin with plurality of roll pairs
    Patent number: 5352110
    Abstract: A molding device for compacting a fiber reinforced resinous material to form an article of manufacture in which reinforcement fibers contained in the fiber reinforced resinous material are oriented as desired. The device includes a die; a roll opposed to the die; a compressing mechanism for pressing one of the die and the roll against the other of the die and the roll; and a driving mechanism for reciprocating and/or rotating one of the die and the roll relative to the resinous material. In this construction, the fiber reinforced resinous material is shaped into a predetermined configuration by compressing a number of times the fiber reinforced resinous material delivered by the pressing mechanism until the fiber reinforced resinous material is compacted to a predetermined degree of compression.
    Type: Grant
    Filed: March 10, 1992
    Date of Patent: October 4, 1994
    Assignee: Takeda Chemical Industries, Ltd.
    Inventors: Yuzo Hayakawa, Tsuneo Hirai, Tsutao Katayama