IP Library Granted Patent US 12689232
Granted Patent B2
US 12689232 · App. 18/660,017 · Granted Jul 21, 2026

Induction charger

Inventor: Brian Shanahan Moran (Irvine, CA)
Assignee: Masimo Corporation
H02J50/10H02J7/731H02J50/005H02J50/90
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Quick Facts
Patent No.
US 12689232
App. No.
18/660,017
Granted
Jul 21, 2026
Kind
B2
Abstract

Various implementations of chargers are provided herein for inductively charging an electronic device. In some implementations, the charger includes: a housing having an interior and a charging region configured to receive a portion of the electronic device; a substrate positioned within the interior; a cable configured to connect to a power source to provide energy to the charger; and an inductor member positioned within the interior. The inductor member receives electrical current from the cable and generates a magnetic field. The magnetic field induces electrical current in the electronic device when the portion of the electronic device is positioned at the charging region. The charger further includes a biasing member arranged within the interior and configured to apply a biasing force to the inductor member such that the inductor member is pressed against a portion of an interior surface of the housing at said charging region.

Claims (54)

1 . A method of manufacturing an induction charger, the method comprising:

obtaining a housing comprising an interior surface, an exterior surface, and a charging region configured to receive a portion of an electronic device;

obtaining an inductor member configured to receive electrical current and generate a magnetic field responsive to the received electrical current;

obtaining a frame;

positioning said inductor member adjacent said frame;

engaging the frame with one or more portions of the housing in a first position; and

biasing the inductor member against a portion of the interior surface of the housing at said charging region with said frame based on transitioning said frame from said first position to a second position,

wherein said inductor member does not contact the portion of the interior surface when the frame is in said first position,

wherein said inductor member contacts the portion of the interior surface when the frame is in said second position.

2 . The method of claim 1 , wherein:

the induction charger is configured to rest upon a support surface;

said housing comprises a top shell and a bottom shell, said bottom shell configured to be positioned closer to said support surface than said top shell when said induction charger rests upon said support surface;

said charging region is located on a portion of said top shell;

the method further comprises securing the top shell to the bottom shell; and

said step of biasing the inductor member against the portion of the interior surface of the housing at said charging region with said frame occurs prior to said step of securing the top shell to the bottom shell.

3 . The method of claim 1 , wherein:

said inductor member comprises an annular shape; and

said step of biasing the inductor member against the portion of the interior surface of the housing at said charging region with the frame comprises biasing the inductor member such that an inner edge of the annular inductor member contacts the portion of the interior surface of the housing at said charging region of the housing.

4 . The method of claim 1 , wherein:

the first position is a first rotational position of the frame and the second position is a second rotational position of the frame; and

said transitioning the frame from said first position to the second position comprising rotating the frame from the first rotational position to the second rotational position.

5 . The method of claim 1 , wherein:

said transitioning the frame from said first position to the second position comprises rotating the frame about an axis extending through a center of the frame; and

said rotating the frame about said axis causes the inductor member to move along said axis.

6 . The method of claim 1 , wherein the method further comprises:

inhibiting the frame from transitioning from said second position to said first position.

7 . The method of claim 1 , wherein:

said frame comprises a main body, one or more arms connected to said main body, and one or more fingers connected to said main body; and

the method further comprises:

positioning said main body around said inductor member;

engaging said one or more arms with one or more portions of the housing; and

engaging said one or more fingers with a magnetic material positioned adjacent said inductor member.

8 . The method of claim 7 , wherein:

said housing further comprises one or more teeth arranged on the interior surface of said housing;

said engaging the frame with one or more portions of the housing in said first position comprises:

engaging each of said one or more teeth with a first portion of one of the one or more arms of said frame; and

said transitioning the frame from said first position to said second position comprises:

engaging each of said one or more teeth with a second portion of said one of the one or more arms of said frame.

9 . The method of claim 7 , wherein said engagement between said one or more arms and said one or more portions of the housing form a ratchet.

10 . The method of claim 1 , wherein:

said inductor member is annular; and

the method further comprises:

obtaining a magnetic material comprising a first portion and a second portion that is inset from a perimeter of said first portion; and

positioning said second portion of said magnetic material within an opening defined by the annular inductor member.

11 . The method of claim 10 , wherein:

said magnetic material further comprises an aperture extending through said first and second portions of the magnetic material;

said housing further comprises a protrusion extending from the interior surface at said charging region; and

the method further comprises positioning said protrusion at least partially within said aperture in said magnetic material to at least partially align said magnetic material with said charging region.

12 . The method of claim 1 , further comprising:

securing the inductor member to a magnetic material to inhibit relative movement between the inductor member and the magnetic material; and

securing the magnetic material to the frame to inhibit relative movement between the magnetic material and the frame.

13 . The method of claim 12 , wherein said securing the inductor member to the magnetic material comprises adhering the inductor member to the magnetic material.

14 . The method of claim 1 , wherein said inductor member comprises a coiled conductor wire, and wherein said biasing the inductor member against the portion of the interior surface of the housing at said charging region comprises biasing the inductor member such that at least a portion of the coiled conductor wire deforms.

15 . The method of claim 14 , wherein said inductor member comprises a casing enclosing said coiled conductor wire.