Patents by Inventor Dean William Osterman

Dean William Osterman 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).

  • Valve arrangement for a compressor
    Patent number: 6467287
    Abstract: A compressor and oil separator assembly for compressing a fluid includes a suction end, a discharge end, and first and second rotors rotatably mounted between the suction and discharge ends. A discharge line communicates with the discharge end, and an oil separator communicates with the discharge line. An oil sump communicates with the oil separator and an oil supply line communicates between the oil sump and the rotors. A bleed line selectively communicates between the discharge line and the oil supply line for equalizing a pressure differential between the suction end and the discharge end without causing substantial backward rotation of the rotors or displacement of oil to the rotors through the oil supply line. Preferably, the assembly further includes a valve that defines a portion of the discharge line and is also coupled to the bleed line.
    Type: Grant
    Filed: August 15, 2001
    Date of Patent: October 22, 2002
    Assignee: Thermo King Corporation
    Inventors: Lars Ivan Sjoholm, Lee J. Erickson, Dean William Osterman
  • Valve arrangement for a compressor
    Publication number: 20020035839
    Abstract: A compressor and oil separator assembly for compressing a fluid includes a suction end, a discharge end, and first and second rotors rotatably mounted between the suction and discharge ends. A discharge line communicates with the discharge end, and an oil separator communicates with the discharge line. An oil sump communicates with the oil separator and an oil supply line communicates between the oil sump and the rotors. A bleed line selectively communicates between the discharge line and the oil supply line for equalizing a pressure differential between the suction end and the discharge end without causing substantial backward rotation of the rotors or displacement of oil to the rotors through the oil supply line. Preferably, the assembly further includes a valve that defines a portion of the discharge line and is also coupled to the bleed line.
    Type: Application
    Filed: August 15, 2001
    Publication date: March 28, 2002
    Applicant: Thermo King Corporation
    Inventors: Lars Ivan Sjoholm, Lee J. Erickson, Dean William Osterman