초록 ▼

A pipe joint assembly comprises a pair of cylindrical pipe ends of the same internal diameter in axially contiguous aligned relationship. Connecting flanges extend radially outward of each of the pipe end and have opposed faces defining a circumferentially continuous packing groove including a first

A pipe joint assembly comprises a pair of cylindrical pipe ends of the same internal diameter in axially contiguous aligned relationship. Connecting flanges extend radially outward of each of the pipe end and have opposed faces defining a circumferentially continuous packing groove including a first axially narrow portion opening to the cylindrical interior of the pipe ends and a second axially wider portion radially outward of the first portion. An elastomeric gasket positioned in the packing groove. The gasket is sized and dimensioned to completely fill the first axially narrow portion and extend to within the second portion. The radial inner extent of the gasket provides a smooth continuation of the cylindrical interior surfaces of said pipe ends when the flange faces are at their limit of movement toward one another. The second portion of the packing groove is sufficiently large to provide expansion space into which the gasket can expand when subjected to temperature increases to thereby reduce extrusion of the gasket beyond the cylindrical interior surfaces of the pipe ends.

대표청구항 ▼

[ Having thus described the invention, it is claimed:] [1.] A pipe joint assembly for joining a pair of cylindrical pipe or tube ends in a axially contiguous relationship, said pipe ends having cylindrical interior surfaces of the same diameter in an aligned relationship, the assembly comprising:a p

[ Having thus described the invention, it is claimed:] [1.] A pipe joint assembly for joining a pair of cylindrical pipe or tube ends in a axially contiguous relationship, said pipe ends having cylindrical interior surfaces of the same diameter in an aligned relationship, the assembly comprising:a pair of connecting flanges extending radially outward of each of said pipe ends, said connecting flanges having opposed faces defining a circumferentially continuous packing groove including a first axially narrow portion opening to the cylindrical interior surfaces and a second axially wider portion radially outward of the first portion;rigid means associated with the flanges to limit movement of the flange faces axially toward one another;a polymeric gasket positioned in the packing groove, said gasket sized and dimensioned to completely fill the first axially narrow portion and extend to within the second portion, the radial inner extent of the gasket providing a smooth continuation of the cylindrical interior surfaces of said pipe ends when the flange faces are at their limit of movement toward one another;the second portion of the packing groove being sufficiently large to provide expansion space into which the gasket can expand when subjected to temperature increases to thereby reduce extrusion of the gasket beyond the cylindrical interior surfaces of said pipe ends; and said expansion space being symmetrically located about said gasket.