The patent application, filed with the U.S. Patent and Trademark Office, shows images of a round charging device with a concave top, similar to the plastic wireless charger used by the Apple Watch.
In describing how the tools would work, the application includes multiple illustrations of a charging station used to provide electrical current to another device via inductive power transmission. An inductive transmitter coil wraps around a metal core and is designed to pair with a receiver coil and charge the battery in the electronic device.
Apple notes that the charging station could include an electromagnetically transparent support surface for the device to be charged, allowing it to sit on the station unencumbered and receive power wirelessly via the induction coupling technology. The charging station is also described as including a port for a USB-type connector cable to connect with an external power source, such as a laptop.
The patent application was filed in late 2015, and provides ample evidence that Apple’s engineering teams continue to investigate wireless charging solutions. Source- macrumors