Insulator
AssigneeRaychem Corporation
InventorDonald C. Barrett
Life of this patent
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Abstract
A generally-planar polymeric protective shield (2) for mounting on a high voltage porcelain insulator (16) has circumferential and radial intersecting grooves (8,10) in its upper surface. The intersections are deepened to provide point projections (12) from the lower surface thereby to space the major portion of the shield (2) from the insulator (16). The convoluted upper surface of the shield (2) enhances the physical protection of the porcelain of the insulator (16).
Claims12
An electrically insulating and substantially non-tracking generally planar member suitable for mounting on a shedded elongate porcelain high-voltage insulator, the member being of annular configuration and being arranged for mounting aruond and spaced apart from a core of the insulator and for mounting over and spaced apart from a shed of the insulator, wherein an upper surface of the member has channels formed therein, each of said channels having an upper channel surface and a lower channel surface, said lower channel surface extending downwardly from a lower surface of the planar member, a plurality of projections extending downwardly from said lower surface being provided by the intersection of said channels, said projections, in use, contacting the porcelain shed of the insulator.
Dependencies are inferred from the claim text.