Corona-resistant wire

• US 20040031620A1
• Filed: 05/20/2003
• Published: 02/19/2004
• Est. Priority Date: 05/25/2002
• Status: Abandoned Application

• Current Assignee: Robert Bosch GmbH
• Original Assignee: Robert Bosch GmbH
• Inventors: Gaida, Cornelius, Endres, Wolfgang, Lerchenmueller, Klaus
• Application Number:
  US10/442,040
• Publication Number:
  US 20040031620A1
• Time in Patent Office: Days
• US Class Current: 174/120R
• CPC Class Codes: H01B 3/306 Polyimides or polyesterimides
• CPC Class Codes: H01B 7/28 Protection against damage caused by moisture, corrosion, chemical attack or weather
• CPC Class Codes: H01F 27/2823 Wires H01F27/2866 takes precedence
• CPC Class Codes: H01F 38/12 Ignition, e.g. for IC engines
• CPC Class Codes: H02K 3/30 Windings characterised by the insulating material

Abstract

A corona-resistant wire for electric windings in particular, the wire having enamel as the primary insulation and having a diameter of 20 μm to 80 μm.

Claims

1. A corona-resistant wire comprising:

a primary insulation composed of an enamel,

wherein a diameter of the wire is between 20 μ

m and 80 μ

m.

2. The wire according to claim 1, wherein the primary insulation has a diameter between 20 μ

m and 80 μ

m.

3. The wire according to claim 1, wherein the enamel contains a polar component.

4. The wire according to claim 3, wherein the polar component is composed of nanoparticles.

5. The wire according to claim 3, wherein the polar component includes titanium dioxide.

6. The wire according to claim 1, further comprising an electrically conducting core, the enamel being applied directly to the core.

7. The wire according to claim 1, wherein the primary insulation includes a plurality of enamel layers.

8. The wire according to claim 1, wherein the primary insulation includes an enamel layer, and further comprising at least one additional layer having a different composition than the enamel layer and being applied to the enamel layer.

9. The wire according to claim 8, wherein the at least one additional layer includes an enamel layer.

10. The wire according to claim 1, wherein the wire is part of an electric winding.

11. The wire according to claim 1, wherein the wire is part of an electric winding having a secondary insulation formed by a casting compound.

12. The wire according to claim 1, wherein the wire is part of an ignition coil.

13. The wire according to claim 1, wherein the wire is part of a lighting system.

14. The wire according to claim 1, wherein the wire is part of an a.c. voltage transmitter.

15. The wire according to claim 1, wherein the wire is part of a converter-supplied motor.