US 12,489,323 B2
Wireless charging coil in wearable devices
Qi Tian, San Jose, CA (US); Liang Jia, Palo Alto, CA (US); Tressa Christie Scott, San Francisco, CA (US); and Srikanth Lakshmikanthan, Milpitas, CA (US)
Assigned to Google LLC, Mountain View, CA (US)
Filed by Google LLC, Mountain View, CA (US)
Filed on Feb. 29, 2024, as Appl. No. 18/591,804.
Application 18/591,804 is a division of application No. 17/065,595, filed on Oct. 8, 2020, granted, now 11,949,251.
Prior Publication US 2024/0204576 A1, Jun. 20, 2024
Int. Cl. H02J 50/10 (2016.01); H02J 7/02 (2016.01); H02J 50/70 (2016.01)
CPC H02J 50/70 (2016.02) [H02J 7/02 (2013.01); H02J 50/10 (2016.02)] 9 Claims
OG exemplary drawing
 
1. A wireless power transfer system, comprising
a wireless power receiving system; and
a wireless charging device, wherein the wireless charging device comprises:
a transmitter coil having a conical shape; and
a charging base, comprising:
an inner flange;
an outer flange; and
a supporting bottom connected between the inner flange and the outer flange, wherein the outer flange has a height greater than a height of the inner flange, wherein the charging base has a channel formed therein configured to receive the transmitter coil, and wherein the channel has a sloped surface configured to mate with the conical shape of the transmitter coil.