Wireless charging coil
AssigneeA.K. Stamping Company, Inc.
InventorsArthur Kurz, Bernard Duetsch, Joshua Kurz
Life of this patent
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Abstract
A wireless charging coil is provided herein. The wireless charging coil comprising a first stamped coil having a first spiral trace, the first spiral trace defining a first space between windings, and a second stamped coil having a second spiral trace, the second spiral trace defining a second space between windings, wherein the first stamped coil and second stamped coil are planar to and interconnected with one another, such that the first stamped coil is positioned within the second space of the second stamped coil, and the second stamped coil is positioned within the first space of the first stamped coil.
Claims18
A method of making a wireless charging coil comprising:
- stamping a metal sheet to form a first coil having a first spiral trace with a rectangular cross-section, the first spiral trace defining a first space between windings;
- and
- stamping a metal sheet to form a second coil having a second spiral trace with a rectangular cross-section, the second spiral trace defining a second space between windings;
- and
- interconnecting the first stamped coil and the second stamped coil to form a planar coil assembly, such that the first stamped coil is positioned within the second space of the second stamped coil, the second stamped coil is positioned within the first space of the first stamped coil, the first stamped coil and the second stamped coil are positioned in the same plane, and the planar coil assembly has a fill ratio greater than 65%.
Dependencies are inferred from the claim text.