Patent ID: 9485585
Filing Date: 2016-11-01
CPC Classification: H04R

Claim Text:
1. A motor for an acoustic device, the motor comprising: an armature; at least one magnet; a coil; and a magnetic support structure; wherein the at least one magnet defines a space, wherein the coil forms a tunnel, and wherein the space defined by the at least one magnet is aligned with the tunnel formed by the coil; wherein portions of the armature extend through the space and the tunnel, wherein an opening at an end of the coil is shaped so as to restrict movement of the armature; wherein the armature moves in an upward vertical direction and a downward vertical direction; wherein portions of the tunnel are tapered and the opening is shaped as an octagon or a diamond such that when the armature moves in the upward vertical direction, the armature contacts the opening only at a first contact point and a second contact point, and such that when the armature moves in the downward vertical direction the armature contacts the opening at a third contact point and a fourth contact point, wherein the first contact point, the second contact point, the third contact point, and the fourth contact point are separate and distinct from each other.