Patents by Inventor Katutoshi Kumashiro

Katutoshi Kumashiro 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).

  • Scroll-type compressor
    Patent number: 5040952
    Abstract: A scroll-type compressor includes a hermetic case in which a compression section having a pair of spiral scrolls and a motor section for driving the compression section are arranged. The motor section has a rotating shaft coupled to the compression section. A flow passage is formed in the shaft and communicates at its one end with the compression chamber of the compression section and at its other end with a muffler chamber defined above the motor section. An operating fluid compressed in the compression chamber is guided into the muffler chamber through the flow passage, flows around the motor section, and then is discharged from the case.
    Type: Grant
    Filed: February 28, 1990
    Date of Patent: August 20, 1991
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Toshinobu Inoue, Satoru Oikawa, Katutoshi Kumashiro, Hirotsugu Sakata