Patents by Inventor Theodore Clifton Powers

Theodore Clifton Powers 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).

  • Patent number: 7642683
    Abstract: A self-regulating permanent magnet device has a first rotor segment and second rotor segment, each supporting a set of permanent magnets, wherein the position of the second rotor segment relative to the first rotor segment is modified based on the speed of the self-regulating permanent magnet device. By modifying the position of the second rotor segment relative to the first rotor segment, the alignment between their respective sets of permanent magnets, and therefore, the electromotive force (emf) generated in the stator coils is regulated. The position of the second rotor segment is defined by the connection of a torsion spring between the first rotor segment and second rotor segment and a reactionary torque device connected to the second rotor segment. The torsion spring creates a spring force that acts to maintain the alignment between the first rotor segment and the second rotor segment.
    Type: Grant
    Filed: December 6, 2006
    Date of Patent: January 5, 2010
    Assignee: Hamilton Sundstrand Corporation
    Inventors: Theodore Clifton Powers, Michael Raymond Hernden, Mahesh J. Shah
  • Publication number: 20080136294
    Abstract: A self-regulating permanent magnet device has a first rotor segment and second rotor segment, each supporting a set of permanent magnets, wherein the position of the second rotor segment relative to the first rotor segment is modified based on the speed of the self-regulating permanent magnet device. By modifying the position of the second rotor segment relative to the first rotor segment, the alignment between their respective sets of permanent magnets, and therefore, the electromotive force (emf) generated in the stator coils is regulated. The position of the second rotor segment is defined by the connection of a torsion spring between the first rotor segment and second rotor segment and a reactionary torque device connected to the second rotor segment. The torsion spring creates a spring force that acts to maintain the alignment between the first rotor segment and the second rotor segment.
    Type: Application
    Filed: December 6, 2006
    Publication date: June 12, 2008
    Applicant: Hamilton Sundstrand Corporation
    Inventors: Theodore Clifton Powers, Michael Raymond Hernden, Mahesh J. Shah
  • Patent number: 6317963
    Abstract: A dynamoelectric machine (10) includes a stator (12), a rotor (14), a bearing (16) supporting the rotor (14) for rotation about an axis (20), and a housing (22). The housing (22) is manufactured by first forming a unitary metallic extrusion (24) including a radially innermost nominally cylindrical member (26), a radially outermost nominally cylindrical member (28), a central nominally cylindrical member (30) spaced radially between the innermost and outermost members (26, 28), a set of spokes (32) connecting the innermost and central cylindrical members (26, 30) together, a set of arcuate cooling passages (34), a set of spokes (36) connecting the central outermost cylindrical members (30, 28) together, and a set of arcuate cooling passages (38). A set of fins (40) are also formed during the extrusion process extending radially from the central cylindrical member (30) into the cooling passages (38).
    Type: Grant
    Filed: August 3, 1999
    Date of Patent: November 20, 2001
    Assignee: Hamilton Sundstrand Corporation
    Inventors: Theodore Clifton Powers, Kris Harold Campbell