|국가/구분||United States(US) Patent 등록|
|미국특허분류(USC)||174/65SS ; 285/354|
|발명자 / 주소|
|인용정보||피인용 횟수 : 7 인용 특허 : 1|
A flame-proof cable gland for use with an unarmored electrical cable having a sheath providing a tensile strength and wherein a flame-proofing seal and a clamping ring are provided for co-operation with the outer surface of an electrical cable passing therethrough. The hardnesses of the flame-proofing seal and the clamping ring are selected so that, upon axial compression of both of them to cause them to bulge into contact with the outer sheath of an electrical cable, the flame-proofing seal is rendered operative first followed by the clamping ring.
An electrical cable gland comprising a pair of tubular body members defining a passage for an electrical cable therethrough, means on one of the body members for connecting the gland to an electrical connection box, a portion of said passageway having an enlarged internal diameter and receiving within said portion at least one tubular flame-proofing seal adapted to be compressed axially by relative movement between the two body members to cause the seal to be urged radially inwardly into firm contact with the outer sheath of a cable passing therethrough ...