Patent ID: 8431836
Filing Date: 2013-04-30
Classification: H02G,Y10T

Abstract:
1. A feed-through connector for coupling a cable between at least one terminal point external to an explosion proof enclosure and at least one terminal point within the enclosure comprising: a generally cylindrical intermediate section having an internal central opening; the intermediate section having a lower, input, portion to receive a cable from a terminal external to the explosion proof enclosure and having an upper, output, portion for passing the cable for connection to a terminal within the explosion proof enclosure; and a sealing tube located between the input and output portions of the intermediate section and extending from the input portion to the output portion along the internal central opening of the intermediate section; said sealing tube having a central opening for enabling a cable to be passed through and for enabling a sealant to be injected into the sealing tube to form an air tight connection between the cable and the inner walls of the sealing tube which inhibits sparks or flames from passing through and around the sealing tube; and wherein the intermediate section has an internal ledge between its lower and upper portions, said internal ledge extending inwardly and perpendicularly, and wherein the sealing tube has a lower end with a lip extending perpendicularly outward relative to the central opening of the sealing tube, below the internal ledge, and the sealing tube extending beyond the internal ledge into the output portion, said lip blocking the lower end of the sealing tube from passing beyond the internal ledge.