Electrical transmission or interconnection systems – Plural load circuit systems – Transformer connections
Reexamination Certificate
2005-05-11
2009-10-20
Barnie, Rexford N (Department: 2836)
Electrical transmission or interconnection systems
Plural load circuit systems
Transformer connections
C320S108000
Reexamination Certificate
active
07605496
ABSTRACT:
An inductive power transfer system (1) comprises a primary unit (10) operable to generate an electromagnetic field and at least one secondary device (30), separable from the primary unit, and adapted to couple with the field when the secondary device is in proximity to the primary unit so that power can be received inductively by the secondary device from the primary unit without direct electrical conductive contacts therebetween. The system detects if there is a substantial difference between, on the one hand, a power drawn from the primary unit and, on the other hand, a power required by the secondary device or, if there is more than one secondary device, a combined power required by the secondary devices. Following such detection, the system restricts or stops the inductive power supply from the primary unit. Such a system can detect the presence of unwanted parasitic loads in the vicinity of the primary unit reliably.
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Dames Andrew Nicolas
Dunton John Robert
Knill Alexander Charles
Lamb Kevin Alan
Stevens Michael Craig
Access Business Group International LLC
Amaya Carlos
Barnie Rexford N
Warner & Norcross & Judd LLP
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