Patents by Inventor Tetsuzuo Ukai

Tetsuzuo Ukai 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 compressor for introducing high-pressure fluid to thrust-face side so as to decrease thrust load imposed on revolving scroll
    Patent number: 6428295
    Abstract: A scroll compressor having a simple structure is disclosed, which effectively decreases the thrust load imposed on the revolving scroll without degrading the compression efficiency. The scroll compressor comprises a casing; a fixed scroll provided in the housing and comprising an end plate and a spiral protrusion built on one face of the end plate; and a revolving scroll provided in the casing and comprising an end plate and a spiral protrusion built on one face of the end plate, wherein the spiral protrusions of each scroll are engaged with each other so as to form a spiral compression chamber.
    Type: Grant
    Filed: November 2, 2001
    Date of Patent: August 6, 2002
    Assignee: Mitsubishi Heavy Industries, Ltd.
    Inventors: Hiroyuki Kobayashi, Makoto Takeuchi, Takahide Itoh, Tetsuzuo Ukai