US 9,812,254 B2
Wireless power feeder
Naoyuki Wakabayashi, Osaka (JP)
Assigned to Funai Electric Co., Ltd., Osaka (JP)
Filed by Funai Electric Co., Ltd., Osaka (JP)
Filed on Apr. 1, 2014, as Appl. No. 14/242,108.
Claims priority of application No. 2013-077916 (JP), filed on Apr. 3, 2013.
Prior Publication US 2014/0300198 A1, Oct. 9, 2014
Int. Cl. H01F 27/42 (2006.01); H01F 37/00 (2006.01); H01F 38/00 (2006.01); H01F 38/14 (2006.01); H02J 7/02 (2016.01); H01F 27/00 (2006.01)
CPC H01F 38/14 (2013.01) [H01F 27/006 (2013.01); H02J 7/025 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A wireless power feeder comprising:
a power transmitter that transmits power to a power receiving device; and
a communication unit comprising:
a first receiver; and
a second receiver connected in series with the first receiver,
wherein induction voltages in mutually opposing directions are generated in the first receiver and the second receiver when current passes through the power transmitter,
wherein the first receiver is configured by winding a coil extending in a longitudinal direction around an axis perpendicular to the longitudinal direction so the longitudinal direction becomes a circumferential direction, and the second receiver is a coil wound in the circumferential direction, and
wherein outer shape sizes of the first receiver and the second receiver are identical.