Electrical generator or motor structure – Dynamoelectric – Linear
Patent
1994-08-05
1995-07-18
Dougherty, Thomas M.
Electrical generator or motor structure
Dynamoelectric
Linear
318135, H02K 4100
Patent
active
054344581
ABSTRACT:
A voice coil actuator includes a magnetic flux conductive material core, a magnet and an electrical current conductive coil. The core has a first surface and a continuous channel disposed in the first surface. The channel has a pair of opposing walls. The magnet is disposed in intimate contact with a first one of the walls and spaced from a second one of the walls so that a gap remains between the magnet and the second one of the walls. The magnet has a first face of a first magnetic polarity facing the first one of the walls and a second face of a second, opposite magnetic polarity facing the gap. The magnet is further spaced from a bottom of the channel so that magnetic flux is substantially normal from the second face across the gap to the second one of the walls. The electrical current conductive coil is disposed moveably in the gap such that an electrical current in the coil develops a magnetic force on the coil in a direction substantially normal to the magnetic flux to displace the coil in response to the magnetic force.
REFERENCES:
patent: 4652779 (1987-03-01), Wilcox
patent: 4669013 (1987-05-01), Scranton et al.
patent: 4692999 (1987-09-01), Frandsen
patent: 4808955 (1989-02-01), Godkin et al.
Bulgatz Dennis C.
Stuart Keith O.
Aura Systems, Inc.
Cascio Anthony T.
Dougherty Thomas M.
Merkadeau Lisa A.
To Ed
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