The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 06, 2006
Filed:
Feb. 10, 2005
Jerry Moro, Moorpark, CA (US);
Jerry Moro, Moorpark, CA (US);
Harman International Industries, Inc., Northridge, CA (US);
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.