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US 12,500,493 B1Granted
Electric coil with novel insulating tape and manufacturing method therefor
AssigneeKencoil, Inc.
InventorEran Rosenszweig
Life of this patent
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Abstract
Electric coils and a method of insulating electric coils comprises copper wire with insulation, turn tape (e.g., B stage), film tape, and armor tape. In a preferred embodiment, the tape is hot-pressed after application of the B stage turn tape and again just prior to the application of the armor tape.
Claims20
A stator coil comprising:
- multiple copper strands individually wrapped with polyimide insulation;
- multiple turns, wherein each turn of the multiple turns comprises a grouping of at least two of the individually wrapped copper strands with polyimide insulation together;
- a first ground wall layer wrapping all the turns, a second ground wall layer wrapping the first ground wall layer, and an armor tape wrapping the second ground wall layer;
- wherein each turn of the multiple turns is wrapped with a turn tape, wherein the turn tape is a three-ply, B stage, solventless epoxy bonded mica paper tape;
- wherein each turn is void free;
- wherein the first ground wall layer is a three-ply, B stage, solventless epoxy bonded mica paper tape;
- and
- wherein the second ground wall layer is a film back mica tape consisting of glass, mica and polyester layers.
5 more elements
A stator coil comprising:
- polyimide insulated electrically conductive strands;
- multiple turns comprising at least two of the polyimide insulated electrically conductive strands;
- a first three-ply, B stage, solventless epoxy bonded mica paper tape wrapping each of the multiple turns;
- a second three-ply, B stage, solventless epoxy bonded mica paper tape wrapping each of the multiple turns;
- a film back mica tape wrapping each of the multiple turns, the film back tape consisting of glass, mica, and polyester layers;
- and
- an armor tape wrapped over the film back tape.
4 more elements
A stator coil comprising:
- insulated copper strands;
- multiple turns, wherein each turn of the multiple turns comprises a grouping of at least two of the multiple copper strands together;
- a first three-ply, B stage, solventless epoxy bonded mica paper tape, wherein the first three-ply, B stage, solventless epoxy bonded mica paper tape is wrapped around each of the multiple turns;
- a second three-ply, B stage, solventless epoxy bonded mica paper tape, wherein the second three-ply, B stage, solventless epoxy bonded mica paper tape is wrapped around the first three-ply, B stage, solventless epoxy bonded mica paper tape;
- a film back mica tape, wherein the film back mica tape is wrapped around the second B stage tape and wherein the film back mica tape consists of glass, mica and polyester layers;
- a third three-ply, B stage, solventless epoxy bonded mica paper tape, wherein the third three-ply, B stage, solventless epoxy bonded mica paper tape is wrapped around the film back tape;
- and
- an armor tape, wherein the armor tape is wrapped around the third B stage tape.
5 more elements
Dependencies are inferred from the claim text.