Patents by Inventor Itsumi Komada

Itsumi Komada 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).

  • Patent number: 5132064
    Abstract: A method of molding a foamed product is carried out by using a front and a rear mold for molding a front and a rear portion of the foamed product and a core interposed between the front and rear molds. The method includes steps of pouring or spraying one of foaming stock solutions onto a molding surface of the one mold, arranging the core in the one mold and pouring or spraying the other foaming stock solution onto the core or a molding surface of the other mold. The front and rear molds are closed at a moment when a lapse of time arrives at 30-100% of a rise time of the foaming stock solution later applied. Thereafter the closed molds are maintained in a position where an angle of the closed molds relative to a horizontal plane is within a range between 90.degree. and an angle more than 0.degree.. The front and rear molds are pivotally connected to each other with their one ends by means of a pivot shaft. The core is pivotally supported with its one end by a shaft arranged in parallel to the pivot shaft.
    Type: Grant
    Filed: September 11, 1990
    Date of Patent: July 21, 1992
    Assignee: Bridgestone Corporation
    Inventors: Toshio Iwasawa, Takeo Yoshida, Junji Sakata, Kazushige Ebe, Itsumi Komada, Toshihiro Hamaji, Akihito Kimura
  • Patent number: 5039291
    Abstract: Molding a foamed product is carried out by using a front and a rear mold for molding a front and a rear portion of the foamed product and a core interposed between the front and rear molds. The front and rear molds are closed at a moment when a lapse of time arrives at 30%-100% of a rise time of the foaming stock solution later applied. Thereafter the closed molds are maintained in a position where an angle of the closed molds relative to a horizontal plane is within a range between 90.degree. and an angle more than 0.degree.. The front and rear molds are pivotally connected to each other with their one ends by means of a pivot shaft. The core is pivotally supported with its one end by a shaft arranged in parallel to the pivot shaft. The core is formed with a through-hole and said rear mold is provided with a protrusion to be hermetically fitted in the through-hole of the core.
    Type: Grant
    Filed: December 1, 1989
    Date of Patent: August 13, 1991
    Assignee: Bridgestone Corporation
    Inventors: Toshio Iwasawa, Takeo Yoshida, Junji Sakata, Kazushige Ebe, Itsumi Komada, Toshihiro Hamaji, Akihito Kimura