Patents by Inventor Hiroki Osumimoto

Hiroki Osumimoto 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).

  • Compressor with oil-mist separator
    Patent number: 6554595
    Abstract: In an oil-mist separator included by a compressor, an inlet passage directs a flow axis of a mixture gas including a mist of lubrication oil and a gas to be taken out of the compressor with a pressurized condition when the mixture gas reaches a chamber, and a discharge port for discharging the gas from the chamber opens in the chamber.
    Type: Grant
    Filed: May 2, 2001
    Date of Patent: April 29, 2003
    Assignee: Hitachi, Ltd.
    Inventors: Takeshi Hida, Shigekazu Nozawa, Masayuki Urashin, Hiroki Osumimoto, Hirotaka Kameya, Atsushi Watanabe
  • SCREW COMPRESSOR
    Publication number: 20030021714
    Abstract: The screw compressor according to the invention is provided with a main casing 1 having male and female rotors 6, a discharge casing 3 having a discharge passage 15 for compressed gas discharged from the rotors, and an oil reservoir 19 for accumulating oil separated from the compressed gas. The discharge casing is provided with a cylindrical oil separating space section 4 formed therein so as to communicate with the discharge passage, which discharge passage is connected in a tangential direction of the oil separating space section. Further, a discharge port 14 is provided so as to communicate with the oil separating space section, and a cylindrical member 5 is further provided in the oil separating space section so as to be concentric therewith. The oil separating space section and the oil reservoir are connected to each other through a communication passage having a cross-sectional area smaller than that of the oil separating space section.
    Type: Application
    Filed: November 30, 2001
    Publication date: January 30, 2003
    Inventors: Hiroki Osumimoto, Shigekazu Nozawa, Masayuki Urashin, Takeshi Hida, Hirotaka Kameya, Atsushi Watanabe
  • Screw compressor
    Patent number: 6506039
    Abstract: The screw compressor according to the invention is provided with a main casing 1 having male and female rotors 6, a discharge casing 3 having a discharge passage 15 for compressed gas discharged from the rotors, and an oil reservoir 19 for accumulating oil separated from the compressed gas. The discharge casing is provided with a cylindrical oil separating space section 4 formed therein so as to communicate with the discharge passage, which discharge passage is connected in a tangential direction of the oil separating space section. Further, a discharge port 14 is provided so as to communicate with the oil separating space section, and a cylindrical member 5 is further provided in the oil separating space section so as to be concentric therewith. The oil separating space section and the oil reservoir are connected to each other through a communication passage having a cross-sectional area smaller than that of the oil separating space section.
    Type: Grant
    Filed: November 30, 2001
    Date of Patent: January 14, 2003
    Assignee: Hitachi, Ltd.
    Inventors: Hiroki Osumimoto, Shigekazu Nozawa, Masayuki Urashin, Takeshi Hida, Hirotaka Kameya, Atsushi Watanabe
  • Compressor with oil-mist separator
    Publication number: 20020054823
    Abstract: In an oil-mist separator included by a compressor, an inlet passage directs a flow axis of a mixture gas including a mist of lubrication oil and a gas to be taken out of the compressor with a pressurized condition when the mixture gas reaches a chamber, and a discharge port for discharging the gas from the chamber opens in the chamber.
    Type: Application
    Filed: May 2, 2001
    Publication date: May 9, 2002
    Inventors: Takeshi Hida, Shigekazu Nozawa, Masayuki Urashin, Hiroki Osumimoto, Hirotaka Kameya, Atsushi Watanabe