Electromagnetic vibration generators

Details Electromagnetic vibration generators Electromagnetic vibration generators

1989-04-17

1990-12-11

Stephan, Steven L.

Electrical generator or motor structure

Dynamoelectric

Reciprocating

310 17, H02K 3300

Patent

active

049773429

ABSTRACT:
An electromagnetic vibration generator or shaker comprises an armature suspended from a stator and having a coil carried by the armature located in an air gap in the stator. A D.C. magnetic field is produced across the air gap and when an alternating current is fed through the armature coil the armature virbrates along its longitudinal axis. According to the invention the armature is suspended at its periphery by a plurality of suspension members which are arranged in pairs and allow free movement of the armature along its axis of vibration. However the two members of each pair are arranged at an angle to each other and exhibit a stiffness to lateral movement of the armature so as to restrain turning forces acting on the armature in either direction of rotation.

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