Patents Represented by Attorney Felsman Bradley Vaden Gunter & Dillon, LLD

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  • Method and apparatus for handling brake failure in variable frequency drive motors
    Patent number: 6097165
    Abstract: The variable frequency drive of a motor monitors pulse generator feedback while the motor is stopped and an electromechanical brake is set. When the pulse generator feedback exceeds a predetermined level indicative of brake failure, tie controller actuates the motor to operate in zero servo mode and maintain the load. An alarm is also sounded, allowing an operator to safely lower the load.
    Type: Grant
    Filed: August 3, 1998
    Date of Patent: August 1, 2000
    Assignee: Ace-Tronics
    Inventor: Bradley Vinson Herron