Patents by Inventor Thomas J. Dobmcier

Thomas J. Dobmcier 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).

  • Fluid diode expansion device for heat pumps
    Patent number: 7043937
    Abstract: An expansion device for the heat pump applications consists of a flow resistance device that has a different resistance to refrigerant flow depending on the flow direction through this device. The flow resistance device has no moving parts so that it avoids the damage, wear and contamination problems of the moveable piston in the prior art. The flow resistance device is a fixed obstruction about which the fluid must flow when traveling through the expansion device.
    Type: Grant
    Filed: February 23, 2004
    Date of Patent: May 16, 2006
    Assignee: Carrier Corporation
    Inventors: Alexander Lifson, Thomas J. Dobmcier, Michael F. Taras