Electricity: motive power systems – Induction motor systems – Primary circuit control
Reexamination Certificate
2006-12-12
2006-12-12
Masih, Karen (Department: 2837)
Electricity: motive power systems
Induction motor systems
Primary circuit control
C318S807000, C318S808000, C318S810000, C318S812000, C318S563000
Reexamination Certificate
active
07148652
ABSTRACT:
A controller for a variable frequency drive monitors electrical power from a variable frequency drive motor while a brake is maintaining a load driven or moved by the motor without requiring additional feedback components of a closed loop configuration. If excess electrical power is being generated by the motor, an undesirable condition in the brake is indicated. Support or maintenance of the load is assumed by the motor in that event. Appropriate alarms or indicators are also activated.
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Safetronics, AD10 System Automation Drive Specifications, Apr. 2001, found at www.safetronics.com.
Ghanemi Ace
McKeown Kevin
Perkins Michael L.
Roessler Michael J.
Ace-Tronics Company, Inc.
Bracewell & Giuliani LLP
Masih Karen
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