Patents by Inventor John Hefter

John Hefter 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).

  • Axially compact generator set and refrigeration system employing the same
    Patent number: 6064121
    Abstract: Axial compactness is achieved in a generator set including an internal combustion (10) having a main shaft (16) journalled for rotation about an axis (56) and having an end (18, 54) with a flywheel (20) mounted on the end. A first rotatable magnet assembly (21) having axially facing poles is disposed on the flywheel (20) and a stator (24, 72) including generator windings (102, 104) is provided adjacent the magnets (21). A second rotatable magnet assembly (21, 22) is opposite the first magnet assembly (21) and adjacent the stator (24, 72) and has axially facing poles directed toward the poles on the first magnetic assembly (21) and is coupled to the first magnetic assembly for rotation therewith.
    Type: Grant
    Filed: February 27, 1998
    Date of Patent: May 16, 2000
    Assignee: Hamilton Sundstrand Corporation
    Inventors: Roger M. Shervington, Hassan Mansir, John Hefter