Patents by Inventor Yoshihide Umetsu

Yoshihide Umetsu 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).

  • Air cycle refrigerating/cooling system and turbine unit used therefor
    Patent number: 8336328
    Abstract: The air cycle refrigerating/cooling system compresses air that has flown in with a compressor (6) in a turbine unit (5) and adiabatically expands the air with an expansion turbine (7) in a turbine unit (5). In the turbine unit (5), a compressor rotor (6a) of the compressor (6) and a turbine rotor (7a) of the expansion turbine (7) are attached to the same main shaft (13), the main shaft (13) is supported by bearings (15) and (16) so as to be freely rotatable, and part or the entirety of the thrust force applied to this main shaft (13) is supported by an electromagnet (17).
    Type: Grant
    Filed: August 10, 2006
    Date of Patent: December 25, 2012
    Assignee: NTN Corporation
    Inventors: Tsugito Nakazeki, Takayoshi Ozaki, Hiroyuki Yamada, Yoshihide Umetsu
  • AIR CYCLE REFRIGERATING/COOLING SYSTEM AND TURBINE UNIT USED THEREFOR
    Publication number: 20090260388
    Abstract: The air cycle refrigerating/cooling system compresses air that has flown in with a compressor (6) in a turbine unit (5) and adiabatically expands the air with an expansion turbine (7) in a turbine unit (5). In the turbine unit (5), a compressor rotor (6a) of the compressor (6) and a turbine rotor (7a) of the expansion turbine (7) are attached to the same main shaft (13), the main shaft (13) is supported by bearings (15) and (16) so as to be freely rotatable, and part or the entirety of the thrust force applied to this main shaft (13) is supported by an electromagnet (17).
    Type: Application
    Filed: August 10, 2006
    Publication date: October 22, 2009
    Applicant: NTN CORPORATION
    Inventors: Tsugito Nakazeki, Takayoshi Ozaki, Hiroyuki Yamada, Yoshihide Umetsu