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A coupling construction includes a plurality of coupling segments which are receivable in substantially end-to-end encircling relation around the end portions of a pair of grooved pipe sections and a plurality of nut-and-bolt assemblies for securing the coupling segments together. The coupling segme

A coupling construction includes a plurality of coupling segments which are receivable in substantially end-to-end encircling relation around the end portions of a pair of grooved pipe sections and a plurality of nut-and-bolt assemblies for securing the coupling segments together. The coupling segments include arcuate main portions, apertured flanges which extend outwardly from opposite ends of the main portions and spaced first and second ridges which extend inwardly from the inner sides of the main portions and are receivable in annular grooves in the pipe sections. The apertures in adjacent flanges are offset from each other in a direction substantially parallel to the Z－Z axis of the coupling so that tightening of the nut-and-bolt assemblies causes adjacent flanges to be drawn into predetermined offset positions before the end faces of the coupling segments are drawn into engagement. When the adjacent flanges are in the offset positions thereof, opposite end portions of the ridges are urged against opposite side edges of the grooves to secure the pipe sections in predetermined closely spaced, aligned positions. The adjacent end faces of the coupling segments are disposed in angular planes and they are engageable in face-to-face relation so that they cooperate with nut-and-bolt assemblies to provide a wedging action for retaining the adjacent ends of the coupling segments in offset positions.

대표청구항 ▼

A coupling construction for securing the adjacent ends of a pair of pipe sections together, said pipe sections having substantially aligned central longitudinal axes and having annular grooves therein proximal the adjacent ends thereof, said grooves having opposite side edges which are substantially

A coupling construction for securing the adjacent ends of a pair of pipe sections together, said pipe sections having substantially aligned central longitudinal axes and having annular grooves therein proximal the adjacent ends thereof, said grooves having opposite side edges which are substantially perpendicular to the longitudinal axes of their respective pipe sections, said coupling comprising a plurality of coupling segments each including an arcuate main portion, a pair of flanges extending outwardly from opposite ends of said main portion and axially spaced first and second engagement means extending inwardly from said main portion and extending substantially between the opposite ends thereof, said first and second engagement means being receivable in said annular grooves for securing said pipe sections together, and means for securing said coupling segments in substantially end-to-end encircling relation around said pipe sections, said coupling having a Z－Z axis which is substantially aligned with the longitudinal axes of said pipe sections when said coupling segments are secured in substantially end-to-end encircling relation around said pipe sections, each of said flanges having an aperture therethrough and including a fastening element seating surface around each aperture which faces substantially away from the adjacent flange, the apertures in adjacent flanges being offset from each other in a direction substantially parallel to the Z－Z axis of said coupling when adjacent flanges are in substantially aligned relation, said securing means comprising threaded nuts and bolts, said bolts being received in the apertures in adjacent flanges and being in cocked positions wherein the heads thereof and the nuts thereon are disposed at oblique angles to their respective seating surfaces when the respective flanges thereof are in aligned relation, said bolts moving toward aligned positions wherein the heads thereof and the nuts thereon are in seated positions relative to their respective seating surfaces as the respective nuts thereon are tightened, said nuts and bolts therefore being operative for first drawing the adjacent flanges into the offset positions wherein they are offset from each other in a direction substantially parallel to the Z－Z axis of said coupling and for then drawing the adjacent flanges together, the first and second engagement means of said coupling segments being urged against opposite side edges of the grooves in which they are received proximal opposite ends of the coupling segments thereof for rigidly securing said pipe sections together when the flanges on the adjacent ends of said coupling segments are secured in the offset positions thereof.