Electromagnetic coil
AssigneeSensata Technologies, Inc.
InventorsCasey R. Kluesener, Christopher B. Thomas
Life of this patent
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Abstract
An electromagnetic coil with improved insulation properties at high temperatures. A bobbin is insulated by a thin ceramic composite layer that is produced by winding a glass or ceramic fiber over the support structure and impregnating it with a pre-ceramic polymer. The pre-ceramic polymer is then modified to form a ceramic SiO2 matrix around the fibrous layer. The ceramic matrix secures the glass or ceramic fibers in place and produces a dense layer. A ceramic coated magnet wire is then wound around the insulated support structure. The magnet wire is a conductor that is spiral-wrapped with a glass fiber impregnated with a pre-ceramic polymer.
Claims11
An electromagnetic coil, comprising:
- a support structure;
- a first layer disposed on the support structure, the first layer comprising a first polymer resin that has been thermally decomposed to leave an inorganic portion of the polymer;
- and
- a second layer disposed about the first layer, the second layer comprising a conductor and a second polymer resin that has been thermally decomposed to leave an inorganic portion of the polymer.
An electromagnetic coil, comprising:
- a support structure;
- a first layer disposed on the support structure, the first layer comprising fiber and a first polymer resin that has been thermally decomposed to leave an inorganic portion of the polymer;
- and
- a second layer disposed about the first layer, the second layer comprising a conductor and a second polymer resin that has been thermally decomposed to leave an inorganic portion of the polymer.
Dependencies are inferred from the claim text.