Joint restraint for pipe fittings

Details Joint restraint for pipe fittings Joint restraint for pipe fittings

2005-11-14

2009-06-30

Dunwoody, Aaron M (Department: 3679)

Pipe joints or couplings

Socket

With separable fastener

C285S103000, C285S252000, C285S325000, C285S400000

Reexamination Certificate

active

07552949

ABSTRACT:
A joint restraint includes a split ring terminating in radially outwardly extending flanges. A shell includes a cylindrical sleeve, an annular flange at one end and arms projecting generally tangentially for securement behind lugs on a standard bell end of a fitting. With the split ring disposed within the shell and flanges projecting through a radial opening through the shell, a pipe end may be inserted through the joint restraint into the bell. By compressing the split ring about the pipe end by drawing the flanges toward one another and bolting them in place, relative axial movement of the pipe end and fitting is precluded by engagement of the shell flange and split ring.

REFERENCES:
patent: 4092036 (1978-05-01), Sato et al.
patent: 4336959 (1982-06-01), Roche
patent: 5456784 (1995-10-01), Cogdill et al.
patent: 5632513 (1997-05-01), Cassel

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