초록 ▼

This invention relates to an internal expansion coupling, having particular utility in joining together two tubular members or pipes aligned in end-to-end relationship. The device hereof comprises (a) an elongated open ended tubular joint member formed of a relatively rigid sheet-like member, where

This invention relates to an internal expansion coupling, having particular utility in joining together two tubular members or pipes aligned in end-to-end relationship. The device hereof comprises (a) an elongated open ended tubular joint member formed of a relatively rigid sheet-like member, where the sheet ends overlap such that the end portions lie contiguous with each other; (b) a continuous sleeve formed of an elastomeric material and overlapping the sheet side about at least one open end of said tubular joint member, where said sleeve, about the circumference thereof, is provided with at least one continuous upstanding rib which is adapted to lie adjacent to and be compressed against the inside wall of a tubular member; and (c) means for expanding said sheet-like member whereby said sheet ends move circumferentially towards one another urging said elastomeric sleeve and said rib against the inside wall of a tubular member. Additional features thereof include a particular angular relationship for plural ribs, and the use of such device in providing a T-joint between tubular members.

대표청구항 ▼

An internal expansion coupling device for joining a pair of tubular members comprising: (a) an elongated open ended tubular joint member formed from a single, relatively rigid, rectangular sheet-like member, said member being defined by a pair of opposing sheet ends and a pair of opposing sheet side

An internal expansion coupling device for joining a pair of tubular members comprising: (a) an elongated open ended tubular joint member formed from a single, relatively rigid, rectangular sheet-like member, said member being defined by a pair of opposing sheet ends and a pair of opposing sheet sides, where the sheet ends overlap such that the end portions thereof lie contiguous with each other; (b) a continous circumferential gasket sealing sleeve formed of an elastomeric material and overlapping each said sheet side about each open end of said tubular joint member, where said gasket sealing sleeve, about the circumference thereof, is provided with at least a pair of continuous upstanding ribs, each of which is adapted to lie adjacent to and be compressed against the inside wall of a tubular member; and (c) means accessible externally thereof for expanding said sheet-like member whereby said sheet ends move circumferentially towards one another and said extending sheet-like member uniformly urges said elastomeric gasket sealing sleeve and said ribs against the inside walls of said tubular member thereabout.