Patents Represented by Attorney Douglas F. Miller

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  • Variable speed drive motor system with inverter control
    Patent number: 4514991
    Abstract: A variable speed drive motor system is disclosed. The motor system is particularly suitable for use as a drive system for a centrifugal compressor in a refrigeration system. The motor system includes an AC auxiliary motor/generator with inverter control. The motor/generator is interconnected through a transmission system to a main motor to drive an output drive shaft at varying speeds. Preferably, the interconnecting transmission system is an epicyclic gear system.
    Type: Grant
    Filed: October 17, 1983
    Date of Patent: May 7, 1985
    Assignee: Carrier Corporation
    Inventor: Thomas M. Zinsmeyer