Patents Assigned to Yukigaya Institute Co., Ltd.
  • Publication number: 20070292061
    Abstract: A device for rotating body capable of reducing fluid resistance loss by making use of the conventional bearing technology. The device is provided with a rotating body held rotatably; and one or more covering rotating bodies are installed on the outer side of the rotating body and held rotatably and coaxially with the rotating body. Bearing means are provided between the rotating body and the covering rotating body adjacent thereto or between the covering rotating bodies adjacent to each other, and bearings for the respective covering rotating bodies are disposed in series in relation to bearings for the rotating body. In addition, by filling up the interior of a case with hydrogen gas or helium gas, lower in density than air, windage loss can be further reduced.
    Type: Application
    Filed: August 22, 2007
    Publication date: December 20, 2007
    Applicants: Tamura Electric Works, Ltd., Yukigaya Institute Co., Ltd.
    Inventors: Satoru Shimada, Shigeru Suzuki, Koichi Aoyama, Sumiko Seki, Takahiko Ito
  • Patent number: 7231763
    Abstract: A hydraulic system 10 of the present invention has a hydraulic pump driven by a driving source 14, a hydraulic pump motor 52 driven by an operating oil discharged from the hydraulic pump and flowing in an oil path 50, an inertial body 60 connected to a rotary shaft of the hydraulic pump motor, an oil path 62 connected between an outlet port of the hydraulic pump motor and a load 22, an unloading oil path 64 branched from the oil path 62, and an on-off valve 68 inserted in the unloading oil path. In this configuration, as the on-off valve is opened and closed, a high pressure is generated in the oil path 62 by making use of kinetic energy of the inertial body. The inertial body is driven by hydraulic power and the inertial body is separated from the driving source, which also provides an effect of increasing degrees of freedom for an instrument layout.
    Type: Grant
    Filed: October 17, 2003
    Date of Patent: June 19, 2007
    Assignees: Saxa, Inc., Yukigaya Institute Co., Ltd.
    Inventors: Shigeru Suzuki, Satoru Shimada, Takahiro Yamano, Sumiko Seki, Takahiko Itoh