US 6,982,504 B2
Galvanometer motor with composite stator assembly
David C. Brown, Northborough, Mass. (US)
Assigned to GSI Group Corporation, Billerica, Mass. (US)
Filed on Jan. 24, 2003, as Appl. No. 10/350,767.
Prior Publication US 2004/0145249 A1, Jul. 29, 2004
Int. Cl. H02K 35/02 (2006.01)
U.S. Cl. 310—36 17 Claims
OG exemplary drawing
 
1. A limited rotation torque motor comprising a rotor including at least one pair of magnetic poles and a stator including at least one pair of stator coils, each stator coil including a plurality of layers of interconnected flexible circuit composites, each flexible circuit composite including a dielectric material and a patterned conductive material on one side of said dielectric material, wherein said at least one pair of stator coils is formed on a continuous web having a plurality of individual flat coil windings formed onto a flexible dielectric layer that is wrapped upon itself such that said plurality of layers of interconnected flexible circuit composites comprises individual flat conductive layers overlaying one another with alternating dielectric therebetween; and said flexible circuit composites each include an inner edge, and the inner edges are non-uniformly spaced from one another on said continuous web to accommodate the thickness of said web as it is wrapped upon itself in forming a set of stator coils to provide that at least two stator coils are formed such that each stator coil includes:
an innermost flexible circuit composite located near an inner edge of said continuous web,
an outermost flexible circuit composite located near an outer edge of said continuous web, and
at least one intermediate flexible circuit composite between said innermost flexible circuit composite and said outermost flexible circuit composite.