Patents by Inventor Brian C. Hageman

Brian C. Hageman 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).

  • Hydraulic engine powered by introduction and removal of heat from a working fluid
    Patent number: 5916140
    Abstract: A thermal hydraulic engine including a frame. A working fluid changes volume with changes in temperature. A working fluid container houses the working fluid. A cylinder secured to the frame includes an interior space. The cylinder also includes a passage for introducing the working fluid into the interior space. A piston is housed within the interior space of the cylinder. The working fluid container, the interior space of the cylinder, the piston, and the working fluid container define a closed space filled by the working fluid. The engine also includes means for transmitting heat to and removing heat from the working fluid, thereby alternately causing the working fluid to expand and contract without undergoing a phase change. The piston moves in response to the expansion and contraction of the working fluid.
    Type: Grant
    Filed: August 21, 1997
    Date of Patent: June 29, 1999
    Assignee: Hydrotherm Power Corporation
    Inventor: Brian C. Hageman
  • Hydraulic engine powered by introduction and removal of heat from a working fluid
    Patent number: 5899067
    Abstract: A thermal hydraulic engine including a frame. A working fluid changes volume with changes in temperature. A working fluid container houses the working fluid. A cylinder secured to the frame includes an interior space. The cylinder also includes a passage for introducing the working fluid into the interior space. A piston is housed within the interior space of the cylinder. The working fluid container, the interior space of the cylinder, the piston, and the working fluid container define a closed space filled by the working fluid. The engine also includes means for transmitting heat to and removing heat from the working fluid, thereby alternately causing the working fluid to expand and contract without undergoing a phase change. The piston moves in response to the expansion and contraction of the working fluid.
    Type: Grant
    Filed: August 21, 1996
    Date of Patent: May 4, 1999
    Inventor: Brian C. Hageman