Patent ID: 7288719
Filing Date: 2007-10-30
Classification: H02G

Abstract:
1. A sealing gland suitable for use in a hazardous environment for preventing fluid flow, pressure transmission and flame propagation between said gland and the penetrant portion of at least one insulated wire passing therethrough, and within and along the wire, comprising: a tubular body surrounding said wire, said body having rearwardly-facing first surface, having a rearwardly-facing frusto-conical second surface and having a threaded portion; a first insulator surrounding said wire, said first insulator having a forwardly-facing first surface adapted to engage said body first surface and having a rearwardly-facing second surface; a sealant surrounding said wire, said sealant having a forwardly-facing frusto-conical first surface, having a forwardly-facing second surface and having a rearwardly-facing third surface, said sealant first surface adapted to engage said body second surface, said sealant second surface adapted to engage said first insulator second surface; a second insulator surrounding said wire, said second insulator having a forwardly-facing first surface adapted to engage one portion of said sealant third surface, said second insulator having a rearwardly-facing second surface; a follower surrounding said wire and adapted to be mounted for axial movement relative to said body, but constrained against rotation relative to said body, said follower having a forwardly-facing first surface adapted to engage said sealant third surface, having a forwardly-facing second surface adapted to engage a portion of said second insulator second surface, and having a rearwardly-facing third surface; and a cap surrounding said wire, said cap having a threaded portion adapted to matingly engage said body threaded portion and having a forwardly-facing first surface adapted to engage said follower third surface; said sealing gland being so dimensioned and proportioned that when said cap is tightened on said body, said sealant will be deformed into fluid-tight sealed engagement with said body and wire to prevent fluid flow, pressure transmission and flame propagation between the gland and the penetrant portion, and within and along the wire.