Patent ID: 9608506
Date: 2017-03-28
CPC Classifications: G08B,H02K,H04M

Claim:
1. A linear actuator for providing haptic output for a portable electronic device, comprising: a housing; a shaft affixed to the housing; a mass moveably coupled to the shaft; a first injector magnet affixed to a first side of the mass; a second injector magnet affixed to a second side of the mass opposite to the first side of the mass; a spring encircling a portion of the shaft; and an electromagnetic structure at least partially surrounding the mass and the shaft; wherein the electromagnetic structure is affixed to the housing and is operative to exert a motive force on the mass thereby moving the mass from a first position along the shaft to a second position along the shaft; the spring is operative to prevent the mass from contacting the housing; and motion of the mass from the first position along the shaft to the second position along the shaft generates the haptic output from the linear actuator.