IP Library Granted Patent US 8,400,017
Granted Patent B2
US 8,400,017 · App. 12/612,880 · Granted Mar 19, 2013

Wireless energy transfer for computer peripheral applications

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Quick Facts
Patent No.
US 8,400,017
App. No.
12/612,880
Granted
Mar 19, 2013
Kind
B2
Abstract

Described herein are improved configurations for wireless power transfer for computer peripherals, including a source magnetic resonator, integrated into a source station and connected to a power source and power and control circuitry; a device magnetic resonator, integrated into a computer peripheral; wherein power is transferred non-radiatively from the source magnetic resonator to the device magnetic resonator, and where the quality factors of the source and device resonators, Q s and Q d , satisfy the relationship, √{square root over (Q s Q d )}>100.

Claims (25)

1. A wireless power transfer system for computer peripherals, comprising:

a source magnetic resonator, integrated into a source station and connected to a power source and power and control circuitry;

a device magnetic resonator, integrated into a computer peripheral;

at least one additional device magnetic resonator, integrated into at least one additional computer peripheral;

at least one additional source magnetic resonator integrated into the source station and connected to the power and control circuitry;

wherein power is transferred non-radiatively from the source magnetic resonator to the device magnetic resonator, and the quality factors of the source and device resonators, Q s and Q d , satisfy the relationship, √{square root over (Q s Q d )}>100.

2. The system of claim 1 , wherein the at least one computer peripheral is powered directly by the energy transferred to its device magnetic resonator.

3. The system of claim 1 , wherein the at least one computer peripheral includes at least one rechargeable battery that is charged by the wireless power transfer system.

4. The system of claim 1 , wherein the at least one computer peripheral includes at least one energy storage unit that is energized by the wireless power transfer system.

5. The system of claim 4 , wherein the said power transfer is configured to be active when the computer peripherals are not in use.

6. The system of claim 4 , wherein the said power transfer is configured to be active when the source station computer is inactive.

7. The system of claim 1 , wherein the at least one computer peripheral includes at least one super capacitor that is charged by the wireless power transfer system.

8. The system of claim 1 , wherein at least one of the said magnetic resonators is a planar resonator comprising at least one electrical conductor wrapped around a core of magnetic material.

9. The system of clam 1 , further comprising at least one passive magnetic resonator used to enhance the power transfer of the system.

10. The system of claim 1 , further comprising at least one passive magnetic resonator used to extend the distance of power transfer of the system.

11. The system of claim 1 , wherein at least one of the computer peripherals is a computer keyboard.

12. The system of claim 1 , wherein at least one of the computer peripherals is a computer mouse.

13. The system of claim 1 , wherein the source station is an all-in-one computer.

14. The system of claim 13 , wherein the power source of the source power and control circuitry is powered from the USB port of the computer.

15. The system of claim 13 , wherein the power source of the source power and control circuitry is powered from an internal connection in the computer.

16. The system of claim 13 , further comprising a wireless data communication link between the source and the computer peripherals, wherein power status and control information is transmitted through the said communication link.

17. The system of claim 13 , further comprising a means for wireless configuration and monitoring of power levels and active times on the computer.

18. The system of claim 13 , wherein the power and control circuitry is integrated into the said computer.

19. The system of claim 18 , wherein the said source resonators are attached to the bottom portion of the computer monitor.

20. The system of claim 1 , wherein the source station is a computer monitor.

Assignments (4)
ASSIGNMENT OF SECURITY INTEREST Recorded Dec 18, 2025
From: AIR WAVES WIRELESS ELECTRICITY IV, LLC
To: WITRICITY AI TECH, LLC
Reel/Frame 074004/0929 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Dec 16, 2025
From: WITRICITY CORPORATION
To: WITRICITY AI TECH, LLC
Reel/Frame 073982/0106 →
SECURITY INTEREST Recorded Dec 5, 2025
From: WITRICITY CORPORATION; WITRICITY HOLDINGS, INC.
To: AIR WAVES WIRELESS ELECTRICITY IV, LLC, AS COLLATERAL AGENT FOR LENDERS
Reel/Frame 073860/0204 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jan 14, 2010
From: KURS, ANDRE B.; KARALIS, ARISTEIDIS; KESLER, MORRIS P.; CAMPANELLA, ANDREW J.; HALL, KATHERINE L.; KULIKOWSKI, KONRAD J.; LI, QIANG; SOLJACIC, MARIN
To: WITRICITY CORPORATION
Reel/Frame 023781/0772 →