Patents by Inventor Hitoshi Ogasahara

Hitoshi Ogasahara 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: 5042171
    Abstract: A clothes dryer equipped with a condensation unit (23, 38, 73) in which the cooling water that is fed is brought into direct contact with the humid air to dehumidify the humid air. The condensation unit (23, 38, 73) of the clothes dryer comprises a first duct (24, 39, 75) connected at its one end to the delivery portion of the circulating fan (20) and arranged with its other end being directed downwardly of the dryer housing; a second duct (25, 40, 76) connected at its one end to the other end of the first duct (24, 39, 75) and connected at its other end to the heater duct (8d); a cooling water pouring port for feeding cooling water to the second duct; cooling means for bringing the cooling water into direct contact with the humid air; and a water drain port for draining from the second duct (25, 40, 76) the water condensed from the humid air and the cooling water.
    Type: Grant
    Filed: July 25, 1989
    Date of Patent: August 27, 1991
    Assignee: Hitachi, Ltd.
    Inventors: Yukio Obata, Hitoshi Ogasahara, Hiroo Nakamura
  • Patent number: 5029458
    Abstract: A full-automatic washing and drying machine has a drum mounted in an outer tank for rotation about a substantially horizontal axis, a reversible motor operable at a fixed speed for driving the drum, and a power transmission device for transmitting the torque of the motor to the drum axle. The power transmission means include a reduction device. The motor and the reduction device are controlled by a control device such that, during washing and drying operations, the direction of rotation of an output shaft of the motor is switched in short periods while the speed-changing device transmits the rotation of the output shaft of the motor to the drum axle at a reduced speed, whereas, during dehydration operation, the motor operates unidirectionally and the speed-changing device transmits the unidirectional rotation of the motor output shaft to the drum axle with a speed reduction in an initial stage of the dehydration operation and, thereafter, without speed reduction.
    Type: Grant
    Filed: May 17, 1990
    Date of Patent: July 9, 1991
    Assignee: Hitachi, Ltd.
    Inventors: Yukio Obata, Hitoshi Ogasahara