Patents by Inventor James L. Abbot

James L. Abbot 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).

  • Integrated starter generator drive having selective torque converter and constant speed transmission for aircraft having a constant frequency electrical system
    Patent number: 6838778
    Abstract: A starter-generator for an aircraft engine comprises a dynamoelectric machine alternatively operable as a motor or as a generator, having a rotor. A support motor is coupled to the dynamoelectric machine to assist the machine. A torque converter selectively couples and decouples the rotor to the engine, coupling the rotor to the engine at some point when dynamoelectric machine is operated as a motor. A constant speed transmission has an input adapted to be connected to the engine and an output to be connected to the rotor. The unit provides a desired speed relation between input and output. The engine may be started by the dynamoelectric machine when operated as a motor through a first power train including the torque converter and may drive the dynamoelectric machine as a generator through a second power train including the constant speed transmission.
    Type: Grant
    Filed: May 24, 2002
    Date of Patent: January 4, 2005
    Assignee: Hamilton Sundstrand Corporation
    Inventors: Magdy A. Kandil, Laurence D. Vanek, James L. Abbot