Knowles Electronics, Inc.

Richard Scheleski

Yahui Zhang

Shehab Albahri

Thomas E Miller

Charles William King

Matthew Manley

Charles Bender King

Adela Qian

A balanced armature receiver including a motor with a yoke for retaining magnets and fastening to an armature are disclosed. The yoke includes a close-ended wall structure defining a passage through which an armature is extendable. The close-ended wall structure includes a plurality of wall portions interconnecting a plurality of folded corner portions, wherein a thickness of the plurality of wall portions less than a thickness of the plurality of folded corner portions.

Balanced armature receiver and yoke therefor

Two coils are wrapped in one of numerous different implementations. In one implementation, the two coils are wrapped about a portion of a bobbin that has at least three flanges. The first coil is disposed about a first portion of the bobbin between the first flange and the second flange, and a second coil is disposed about a second portion of the bobbin between the second flange and the third flange.

Coil with different windings

Coil bobbins for balanced armature receivers are disclosed. The balanced armature receiver bobbin includes a coil support member, at least two flanges, and a shoulder. The coil support member has an armature passage extending between a first end and a second end thereof. The flanges extending radially from the coil support member such that the first flange extends from the coil support member proximate the first end and the second flange extends from the coil support member proximate the second end. The shoulder extends from the first flange, with the first flange located between the shoulder and the coil support member. The shoulder has a plurality of conductive coil pads disposed on a bottom portion thereof.

Coil bobbin for a balanced armature receiver

An electroacoustic transducer includes an armature that is mounted for deflection between magnets where an elongated portion of the armature includes a protrusion on opposite sides thereof for limiting the deflection of the armature. The protrusions are arranged transversely with respect to the elongated portion of the armature. Among other advantages, deflection of the armature is limited to provide improved shock performance. In one example, the protrusions are located within a magnet zone of the electroacoustic transducer.

Growing community of inventors

Naperville, IL, United States of America

Richard Scheleski