Patents by Inventor Katuhara Fujio

Katuhara Fujio 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).

  • Two stage gas compressor
    Patent number: 5322424
    Abstract: A motor and a low and a high pressure stage compression element which are driven by the motor are disposed in a closed container so as to constitute a rolling piston type rotary compression mechanism in which the discharge side of the low pressure stage compression element is communicated with the suction side of the high pressure stage compression element by way of a communication passage, and coolant compressed by said high pressure stage compression element is discharged into the closed container so as to define a discharge gas passage for cooling the motor, and the cylinder volume of the high pressure stage compression element is set to 45 to 65% of that of said low pressure stage compression element while the compression timing of the high pressure stage compression element is delayed by an angle of 60 to 80 deg.
    Type: Grant
    Filed: July 9, 1993
    Date of Patent: June 21, 1994
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventor: Katuhara Fujio