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US 4,833,278 AGranted
Insulator housing made from polymeric materials and having spirally arranged inner sheds and water sheds
AssigneeHyrdro-Quebec
InventorPeter Lambeth
Life of this patent
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Abstract
An insulator housing comprising a resin bonded fibre tube carrying water repellent, spirally arranged inner sheds and water sheds made from strips of polymeric material provides improved outdoor electrical insulation. The insulator housing provides greater insulation performance per unit length of housing than prior art structures.
Claims28
An insulator housing comprising:
- (a) a resin bonded fibre tube having upper and lower ends;
- (b) at least one set of inner sheds made up of strips of insulating, water repellent material attached around the tube in a spiral arrangement;
- (c) at least one set of water sheds made up from strips of insulating, water repellent material attached around the tube in a spiral arrangement substantialy parallel to, and outside, the inner shed spiral arrangement, the water sheds extending obliquely downwards and outwards from the tube to form a continuous downward sloping surface, so as to shield the inner sheds from precipitation.
Dependencies are inferred from the claim text.