Patent ID: 7085585

Claim:
A method for vibrating a portable device, the method comprising: inducing reciprocating linear movement in a vibrator rod, the vibrator rod including a magnet, the inducing reciprocating linear movement in a vibrator rod further including: applying an electric current through a coil; alternating the direction of the electric current; passing a magnetic field through the vibrator rod in a first direction by generating an alternating magnetic field in response to the alternating electric current; reversing the magnetic field to a second direction; alternating the direction of the magnetic field between the first and second directions; and moving the vibrator rod through a core space inside the coil in response to alternating the magnetic field; contacting the vibrator rod against housing stops by impacting a first end of the vibrator rod against a first stop forming the limit of movement of the rod in a first direction; and impacting a second end of the vibrator rod against a second stop forming the limit of movement in a second linear direction opposite the first direction; and vibrating a portable device housing.