Electrical generator or motor structure – Dynamoelectric – Linear
Reexamination Certificate
2006-06-06
2006-06-06
Schuberg, Darren (Department: 2834)
Electrical generator or motor structure
Dynamoelectric
Linear
C381S414000, C381S412000, C381S420000
Reexamination Certificate
active
07057314
ABSTRACT:
An electromagnetic drive motor assembly (EDMA) has at least one bridge that extends along a radial direction to conduct heat away from the magnetic gap and towards the outer surface of the EDMA. The EDMA includes a conductive ring between a first plate and a second plate. The conductive ring has an inner ring, an outer ring, and at least one bridge between the inner and outer rings. The inner ring is adapted to receive a voice coil such that the heat generated by the voice coil conducts through the inner ring, the bridge, and then to the outer ring. As such, a heat conducting path is provided within the EDMA to remove the heat away from the voice coil. This allows the EDMA to operate more efficiently. The EDMA may also include a flux return having a pole piece that protrudes from the first plate. The inner ring of the conducting ring may receive the pole piece to form an intermediate gap between the pole piece and the inner ring. The pole piece may protrude through the inner ring and insert into an opening within the second plate. A magnetic gap may be formed between the protruding portion of the pole piece and the second plate.
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Harman International Industries, Inc.
Jones Judson H.
Schuberg Darren
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