Method and apparatus for high voltage insulation

  • US 4,053,707 A
  • Filed: 03/29/1976
  • Issued: 10/11/1977
  • Est. Priority Date: 04/07/1975
  • Status: Expired due to Term
First Claim
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1. A method of improving an insulator having a central portion or stem and one or more sheds comprising the step of putting a barrier of dielectric material over the upper surface of a shed but spaced away therefrom, the barrier extending radially outwardly to overhang the periphery of the shed by at least 5 mm around the whole of the shed, the barrier furthermore being spaced radially from the central portion or stem of the insulator over at least a substantial part of the inner periphery of the barrier.

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