Electromagnetic transducer apparatus

Details Electromagnetic transducer apparatus Electromagnetic transducer apparatus

2007-03-14

2011-11-01

Nguyen, Tran (Department: 2834)

Electrical generator or motor structure

Dynamoelectric

Reciprocating

C310S017000, C417S417000

Reexamination Certificate

active

08049375

ABSTRACT:
An electromagnetic transducer apparatus (10) includes a core (30, 31) providing a pair of yokes (34, 35) between which there is an air gap (38, 39), at least one coil (32) disposed about the core (30, 31), an armature (14) moveable in the air gap (38, 39) in response to the coil (32) being energised, the armature (14) being mounted between a pair of suspension springs (22, 23), and characterized in that the armature (14) includes a cylinder (14) in which is disposed a piston (12) which is immovable relative to the core (30, 31).

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