US 11,700,472 B1
Wireless charging with master-slave receivers
Jukka-pekka J. Sjoeroos, Cupertino, CA (US); Ye Li, Campbell, CA (US); and Zaki Moussaoui, San Carlos, CA (US)
Assigned to Apple Inc., Cupertino, CA (US)
Filed by Apple Inc., Cupertino, CA (US)
Filed on Sep. 23, 2020, as Appl. No. 17/29,391.
Claims priority of provisional application 62/905,682, filed on Sep. 25, 2019.
Int. Cl. H04R 1/10 (2006.01); H02J 50/00 (2016.01); H02J 50/70 (2016.01); H02J 50/40 (2016.01); H02J 7/02 (2016.01); H02J 50/12 (2016.01)
CPC H04R 1/1025 (2013.01) [H02J 7/02 (2013.01); H02J 50/005 (2020.01); H02J 50/12 (2016.02); H02J 50/402 (2020.01); H02J 50/70 (2016.02)] 20 Claims
OG exemplary drawing
 
1. An electronic apparatus comprising:
an enclosure having a lid, wherein the enclosure defines a first cavity and a second cavity within the enclosure, and wherein the enclosure includes an enclosure battery;
a first enclosure wireless charging coil incorporated within the enclosure and extending about the first cavity;
a second enclosure wireless charging coil incorporated within the enclosure and extending about the second cavity;
a first earbud positionable within the first cavity of the enclosure, the first earbud comprising a first earbud battery and a first earbud wireless charging coil, the first earbud wireless charging coil extending concentrically around the first earbud battery and operably coupleable with the first enclosure wireless charging coil for wireless charging of the first earbud battery; and
a second earbud positionable within the second cavity of the enclosure, the second earbud comprising a second earbud battery and a second earbud wireless charging coil, the second earbud wireless charging coil extending concentrically around the second earbud battery and operably coupleable with the second enclosure wireless charging coil for wireless charging of the second earbud battery.