Patents by Inventor Toshio Kushiro

Toshio Kushiro 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).

  • Oil-free scroll fluid machine with projecting orbiting bearing boss
    Patent number: 5098265
    Abstract: An oil-free scroll fluid machine having a stationary scroll member, an orbiting scroll member opposing the stationary scroll member, an orbiting bearing boss provided on the orbiting scroll member and receiving an orbiting bearing, and a drive shaft drivingly engaging with the orbiting scroll member through the orbiting bearing and causing an orbiting motion of the orbiting scroll member relative to the stationary scroll member. The orbiting bearing boss projects from the orbiting scroll member into a compression chamber formed between both scroll members beyond a plane which is at 1/2 the height of the wrap on the stationary scroll member. An ample discharge space is formed between the end of the orbiting bearing boss and the end plate of the stationary scroll member.
    Type: Grant
    Filed: April 11, 1990
    Date of Patent: March 24, 1992
    Assignees: Hitachi, Ltd., Shin Meiwa Industry Co., Ltd.
    Inventors: Shigeru Machida, Masahiro Yoshioka, Toshio Kushiro
  • Scroll type pump with wrap curve offset for thermal expansion
    Patent number: 4773835
    Abstract: A scroll type pump has a fixed scroll and an orbiting scroll engaging therewith, wherein a curve of a wrap of either of the scrolls is offset inwardly or outwardly relative to a set curve so as to prevent formation of a gap between the wraps due to thermal expansion of the scroll wraps.
    Type: Grant
    Filed: December 23, 1987
    Date of Patent: September 27, 1988
    Assignees: Hitachi, Ltd., Shin Meiwa Industry Co., Ltd.
    Inventors: Shigeru Machida, Katsumi Matsubara, Toshio Kushiro, Makoto Uenishi, Kazuaki Miyazaki