Voltage surge protector having a pressure release mechanism

Abstract

A voltage surge protector consisting of a plurality of varistors connected in a column, an upper electrode connected to the upper edge of the column of varistors, a lower electrode connected to the lower edge of the column of varistors, an insulating housing that surrounds the column of varistors, a fiberglass cover that surrounds the insulating housing and a weatherproof protective cover provided with barriers mounted on the fiberglass cover. The protector has a mechanism to release pressure during a voltage surge, which consists of a hole in a transversal direction for each varistor of the column of varistors inside the insulating housing, the holes being helicoidally distributed along the length of the housing of insulating material and of a depth less than the thickness of the insulating housing.

Dependencies are inferred from the claim text.