Electrical generator or motor structure – Dynamoelectric – Reciprocating
Reexamination Certificate
2008-05-06
2008-05-06
Mullins, Burton (Department: 2834)
Electrical generator or motor structure
Dynamoelectric
Reciprocating
Reexamination Certificate
active
10908178
ABSTRACT:
Methods and apparatus for increasing the efficiency of a voice coil motor (VCM) are disclosed. According to one aspect of the present invention, a cylindrical and radially symmetric VCM includes a plurality of sets of magnets, and a single coil. The plurality of sets of the magnets are each arranged in an array configuration, and cooperate to form a magnetic field. The coil receives current and has a plurality of windings. A first space is defined within the coil, and the plurality of sets of the magnets are arranged such that a first set of the magnets is positioned within the first space and a second set of the magnets is positioned external to the coil.
REFERENCES:
patent: 3836801 (1974-09-01), Yamashita et al.
patent: 5349258 (1994-09-01), Leupold et al.
patent: 6104108 (2000-08-01), Hazelton et al.
patent: 6188147 (2001-02-01), Hazelton et al.
patent: 6531793 (2003-03-01), Frissen et al.
patent: 6713901 (2004-03-01), Hassan et al.
patent: 6720680 (2004-04-01), Tanaka
patent: 6841910 (2005-01-01), Gery
patent: 6936937 (2005-08-01), Tu et al.
patent: 7135792 (2006-11-01), Devaney et al.
patent: 2003/0192449 (2003-10-01), Fiske et al.
patent: 2003/0218391 (2003-11-01), Hirata
Leupold, Herbert A., “Approaches to Permanent Magnet Circuit Design”, IEEE Transactioins on Magnetics, vol. 29, No. 6, Nov. 1993, pp. 2341-2346.
Strat, Karl J. “Modern Permanent Magnets for Applications in Electro-Technology”, Proceedings of the IEEE, vol. 78, No. 6, Jun. 1990, pp. 923-946.
Zhu, Z.Q. et al., “Halbach Permanent Magnet Machines and Applications: A Review”, IEE Proc.-Electr. Power Appl. vol. 148, No. 4, Jul. 2001, pp. 299-308.
Binnard Michael B.
Gery Jean-Marc
Hazelton Andrew J.
Aka Chan LLP
Mullins Burton
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