Variable-reluctance synchronous electric linear actuator

Details Variable-reluctance synchronous electric linear actuator Variable-reluctance synchronous electric linear actuator

1996-12-30

1998-10-06

Stephan, Steven L.

Electricity: motive power systems

Linear-movement motors

310 14, 310 12, H02K 4102, H02K 3700

Patent

active

058181776

ABSTRACT:
An electrical linear actuator includes a stator assembly and a piston structure. The stator assembly includes a casing having a bore extending therethrough and about a longitudinal axis, a winding structure disposed within the bore and in contact with the casing and a plurality of stator elements connected to the winding structure and arranged circumferentially in a plurality of rows extending parallel to the longitudinal axis within the bore and disposed apart from one another to form longitudinally extending channels between adjacent ones of the rows. Each of the stator elements extends radially inwardly from the winding structure toward the longitudinal axis. The piston structure includes a shaft extending along the longitudinal axis and has an outer cylindrical surface and a plurality of piston elements arranged circumferentially in a plurality of rows extending parallel to the longitudinal axis. Each of the piston elements is connected to the outer cylindrical surface of the shaft and extends radially outwardly therefrom relative to the longitudinal axis. The piston structure is sized and adapted to be slidably received by and linearly movable within the stator assembly with each piston element being disposed within a respective one of the channels so that a gap is formed between facially opposing surfaces of the stator elements and the piston elements.

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