Electrical generator or motor structure – Dynamoelectric – Linear
Patent
1990-03-26
1992-03-24
Stephan, Steven L.
Electrical generator or motor structure
Dynamoelectric
Linear
310 30, H02K 4100, H02K 3318
Patent
active
050991582
ABSTRACT:
An improved electromagnetic actuator of the type comprising (a) a first assembly; (b) a second assembly movable relative to the first assembly along an axis of relative movement in response to a command signal, the second assembly comprising magnetic flux source means for defining radially directed flux both in an inward and outward direction relative to the axis of relative movement; (c) coil assembly means for defining at least two coil segments respectively disposed in the paths of the flux in the inward and outward directions; and (d) means for applying the command signal to the coil segments so that a current flows in one direction around the axis through the inward directed flux, and flows in the opposite direction around the axis through the outward directed flux so that the flux/current force applied between the first and second assemblies is additive. In accordance with one aspect of the invention flat magnets and flux focussing elements are used to provide the radially directed flux. In accordance with another aspect the coil sections are wound onto a core element to provide an attached coil design. Finally, a brushless actuator design is disclosed.
REFERENCES:
patent: 4434968 (1984-03-01), Smith
patent: 4912343 (1990-03-01), Stuart
Ashbrook Bradley J.
Bulgatz Dennis C.
Stuart Keith O.
Aura Systems, Inc.
Cascio Anthony T.
Jones Judson H.
Stephan Steven L.
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