Invention Grant
- Patent Title: Systems and methods for an improved linear motor
- Patent Title (中): 改进的线性电机的系统和方法
-
Application No.: US12369726Application Date: 2009-02-11
-
Publication No.: US08008813B2Publication Date: 2011-08-30
- Inventor: Kyle Lee Keating
- Applicant: Kyle Lee Keating
- Agent Kang Lim
- Main IPC: H02K41/00
- IPC: H02K41/00 ; H04R25/00

Abstract:
An improved linear motor is provided useful in conjunction with audio equipment for reduced distortion audio output at high voice coil displacements. The improved linear motor may include a yoke, a gap plate which forms an air gap with the yoke, magnets coupled to the yoke and the gap plate, a former, and a voice coil coupled to the former. The magnets generate a magnetic field across the air gap, which is relatively narrow. The former and coil fit in the air gap and may move in a vertical direction. The voice coil includes more than one segment, each having differing electrical resistance. The differing resistances cause the force on the voice coil to be uniform regardless of displacement of the voice coil vertically within the air gap. Resistance differences between the segments may be caused by differing the wire lengths making up each segment of the coil. Likewise, each segment may be made of differing material to vary resistance.
Public/Granted literature
- US20100201209A1 SYSTEMS AND METHODS FOR AN IMPROVED LINEAR MOTOR Public/Granted day:2010-08-12
Information query