Patents by Inventor Hiroyuki Toshimitsu

Hiroyuki Toshimitsu 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: 5012658
    Abstract: A full automatic washing machine having a washing/drying cell rotatably mounted in an outer cell, a rotary blade unit provided on the bottom of the washing/drying cell and provided with a cylindrical member mounted thereon, and a washing machine motor adapted to rotate the blade unit in forward and backward directions during washing and rinsing and, to rotate the washing/drying cell at a high speed in one direction during drying. The ratio of the outside diameter of the rotary blade unit to the inside diameter of the washing/drying cell is selected to range between 0.6 and 0.8. The speed of rotation of the rotary blade unit is selected to fall within the range of between 100 and 250 rpm. The time length of rotation of the washing machine motor in each of forward and backward directions is selected to be less than 1 second.
    Type: Grant
    Filed: May 30, 1989
    Date of Patent: May 7, 1991
    Assignee: Hitachi, Ltd.
    Inventors: Tamotsu Shikamori, Hiroyuki Toshimitsu, Hiroshi Ohsugi, Isao Hiyama, Soichi Fukuzawa
  • Patent number: 4955213
    Abstract: When an abnormal washing condition occurs during a washing process, an auto-off power source switch is made automatically to present an off condition after a long shelf time such as one hour. In case of the abnormal washing condition of the washing process, since the switch maintains the long shelf time, an operator can notice such an abnormal condition during this long shelf time and then remaining normal washing process can be carried out continuously by getting rid of the abnormal cause. It is therefore unnecessary to re-set the washing process. After the washing process has been finished, the switch is made automatically to present the off condition at a short shelf time such as five minutes. During this short shelf time, it is unnecessary to start the switch at an on condition so as to re-start for carrying out next washing process.
    Type: Grant
    Filed: February 13, 1989
    Date of Patent: September 11, 1990
    Assignee: Hitachi, Ltd.
    Inventors: Hiroshi Ohsugi, Hiroyuki Toshimitsu, Toshiyasu Kamano, Tamotu Shikamori, Masayoshi Hirayama
  • Patent number: 4724688
    Abstract: A fully automatic washing machine having a washing/drying cell rotatably mounted in an outer cell, a rotary blade unit provided on the bottom of the washing/drying cell and provided with a cylindrical member mounted thereon, and a washing machine motor adapted to rotate the blade unit in forward and backward directions during washing and rinsing and, to rotate the washing/drying cell at a high speed in one direction during drying. The ratio of the outside diameter of the rotary blade unit to the inside diameter of the washing/drying cell is selected to range between 0.6 and 0.8. The speed of rotation of the rotary blade unit is selected to fall within the range of between 100 and 250 rpm. The time length of rotation of the washing machine motor in each of forward and backward directions is selected to be less than 1 second.
    Type: Grant
    Filed: October 28, 1986
    Date of Patent: February 16, 1988
    Assignee: Hitachi, Ltd.
    Inventors: Tamotsu Shikamori, Hiroyuki Toshimitsu, Hiroshi Ohsugi, Isao Hiyama, Soichi Fukuzawa
  • Patent number: 4691538
    Abstract: A fully automatic washing machine having a washing/drying cell rotatably mounted in an outer cell, a rotary blade unit provided on the bottom of the washing/drying cell and provided with a cylindrical member mounted thereon, and a washing machine motor adapted to rotate the blade unit in forward and backward directions during washing and rinsing and, to rotate the washing/drying cell at a high speed in one direction during drying. The ratio of the outside diameter of the rotary blade unit to the inside diameter of the washing/drying cell is selected to range between 0.6 and 0.8. The speed of rotation of the rotary blade unit is selected to fall within the range of between 100 and 250 rpm. The time length of rotation of the washing machine motor in each of forward and backward directions is selected to be less than 1 second.
    Type: Grant
    Filed: February 28, 1986
    Date of Patent: September 8, 1987
    Assignee: Hitachi, Ltd.
    Inventors: Tamotsu Shikamori, Hiroyuki Toshimitsu, Hiroshi Ohsugi, Isao Hiyama, Soichi Fukuzawa