Electricity: motive power systems – Automatic and/or with time-delay means – Terminal voltage or counter-electromotive force of...
Reexamination Certificate
2005-03-22
2005-03-22
Duda, Rina (Department: 2837)
Electricity: motive power systems
Automatic and/or with time-delay means
Terminal voltage or counter-electromotive force of...
C318S132000, C318S254100, C318S434000, C318S500000, C388S923000, C388S928100
Reexamination Certificate
active
06870337
ABSTRACT:
Methods and apparatus permit: monitoring a level of a power source that provides operating power to a control circuit, the control circuit being of a type that senses signals in windings of a polyphase motor to maintain synchronization therewith; and converting kinetic energy of the polyphase motor into operating power for the control circuit when the level has fallen below a threshold level, such that the control circuit is capable of maintaining synchronization with the polyphase motor.
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Duda Rina
Kaplan & Gilman LLP
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