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US 6,445,092 B1Granted
Dual-circuit segmented rail phased induction motor
AssigneeSandia Corporation
InventorsBarry M. Marder, Maynard Cowan, Jr.
Life of this patent
Estimating the term…
Abstract
An improved linear motor utilizes two circuits, rather that one circuit and an opposed plate, to gain efficiency. The powered circuit is a flat conductive coil. The opposed segmented rail circuit is either a plurality of similar conductive coils that are shorted, or a plurality of ladders formed of opposed conductive bars connected by a plurality of spaced conductors. In each embodiment, the conductors are preferably cables formed from a plurality of intertwined insulated wires to carry current evenly.
Claims8
An efficient dual circuit linear motor comprising:
- a powered first circuit comprising a flat powered coil of an elongated electrical conductor having a first end at an inside of said coil and a second end at an outside of said coil;
- and a source of low frequency AC power connected across said conductor ends;
- and
- a segmented reaction rail comprising a plurality of aligned track circuits, each track circuit comprising a flat track coil of elongated electrical conductor having a first end at an inside of said track coil and a second end at an outside of said track coil, said first end being electrically shorted to said second end by a short length of conductor;
- wherein said powered coil is in a first plane and said track coils are in a second plane parallel to said first plane, said powered coil being aligned with and spaced from said track coils, said powered coil moving along said reaction rail.
2 more elements
An efficient dual circuit linear motor comprising:
- a powered first circuit comprising a flat powered coil of an elongated electrical conductor having a first end at an inside of said coil and a second end at an outside of said coil;
- and a source of low frequency AC power connected across said conductor ends;
- and
- a segmented reaction rail comprising a plurality of aligned electrically conductive track circuits, each track circuit describing a flat rectangle having parallel spaced first and second spaced metallic bars extending parallel to said rail and a plurality of parallel spaced electrical conductors extending between said bars transverse to said rail;
- wherein said powered coil is in a first plane and said track rectangles are in a second plane parallel to said first plane, said powered coil being aligned with a spaced from said track rectangles, said powered coil moving along said reaction rail.
2 more elements
Dependencies are inferred from the claim text.