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US 2010/0244579 A1Published application
Coil unit, and power transmission device and power reception device using the coil unit
AssigneeSeiko Epson Corporation
InventorsHaruhiko SOGABE, Takahiro KAMIJO, Minoru HASEGAWA
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Abstract
A coil unit includes a first coil having an outer diameter of D1, and at least one second coil having an outer diameter of D2 (D2<D1). The at least one second coil is arranged on a transmission surface side of the first coil. A part or whole of the at least one second coil overlaps the first coil, when viewed from the transmission surface side.
Claims6
A coil unit comprising:
- a first coil having an outer diameter of D1;
- and
- at least one second coil having an outer diameter of D2 (D2<D1),
- the at least one second coil being arranged on a transmission surface side of the first coil, and a part or whole of the at least one second coil being overlapped with the first coil when viewed from the transmission surface side.
1 more element
Dependencies are inferred from the claim text.