Patent Number: 6,168,210

Title: Pipe coupling

Abstract: A pipe coupling (10) for coupling and sealing adjacent ends of two pipe sections (12, 14) of the same or different outer diameters. The pipe coupling (10) includes an annular sleeve (24), a pair of annular gaskets (22) and a pair of follower flanges (20) that surround the adjacent ends of the pipe sections (12, 14). The gaskets (22) have inclined front walls (42) that are angled generally complementary to clamping surfaces (28) formed at opposite ends of the sleeve (24). The gaskets further include inclined back walls (52). As the follower flanges (20) are urged toward the opposite ends of the sleeve (24), the inclined back walls (52) of the gaskets (22) cooperate with skirts (32) formed on the follower flanges (22) to cause the gaskets (22) to readily toe-in toward the outer walls of the pipe sections (12, 14) at relatively low torque and cause sealing engagement with pipe ends sections (12, 14). The follower flange skirts (32) may include inclined skirt walls (60) to further facilitate action of the gaskets (22).

Inventors: Bird; Edwin A. (Ashdown, AR)

Assignee: M & FC Holding Company, Inc.

International Classification: F16L 21/02 (20060101); F16L 21/04 (20060101); F16L 017/02 ()

Expiration Date: 01/02/2018