Vibrational transducer

Details Vibrational transducer Vibrational transducer

1998-07-01

2000-05-02

Hofsass, Jeffery A.

Communications: electrical

Tactual indication

3403111, 34082546, 310 81, H04B 336

Patent

active

060577533

ABSTRACT:
A vibrating transducer or alarm for a pager, cellular telephone and the like, includes a single coil wound in a longitudinal direction to enclose a chamber extending in the longitudinal direction; a planar substrate, bonded to an outer wall formed by the coil; a switching power source, operatively coupled to the coil, for producing an oscillating magnetic field within the chamber; and an eccentric weight rotor assembly extending within the chamber, where the rotor assembly includes a permanent magnet that provides a rotational force to the rotor assembly when acted upon by the oscillating magnetic field.

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