Patents by Inventor Yoshihiro Kizawa

Yoshihiro Kizawa 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: 5385031
    Abstract: A rotational speed of a fan is maintained at a preset one when an angle of a flap is at a maximum air-flow angle, increased by a specified value when the angle of the flap has been changed by a specified angle in the direction away from the position of the maximum air-flow angle, and decreased by a specified value when the angle of the flap has been changed by a specified angle in the direction toward the position of the maximum air-flow angle. It is possible to prevent any occurrence of condensation and air-flow pulsating noise without needing any complex control such as load response control and yet without requiring any complicate construction in the flap.
    Type: Grant
    Filed: October 18, 1993
    Date of Patent: January 31, 1995
    Assignee: Daikin Industries, Ltd.
    Inventors: Yoshihiro Kizawa, Toshimitsu Fukushima, Hiroyoshi Katsuyama, Isamu Makino, Toshiyuki Yamada
  • Patent number: 4353217
    Abstract: A direct contact type multi-stage steam condenser system having a direct contact type high vacuum stage steam condenser disposed above a low vacuum stage steam condenser with a water supplying tank for the low vacuum stage condenser disposed therebetween. In the preferred embodiment, the high and low vacuum stage condensers and the water supplying tank are formed integrally as a single unit. The water supplying tank, which also serves as a gas-tight seal between the condenser stages, is formed above a water sprinkling board provided in the upper portion of the low vacuum stage condenser. Condensed water falls under its own weight thereby eliminating the need for an intermediate pressurizing pumps.
    Type: Grant
    Filed: February 5, 1980
    Date of Patent: October 12, 1982
    Assignee: Fuji Electric Co., Ltd.
    Inventors: Ryozo Nishioka, Yoshihiro Kizawa, Hiroshi Shingai