Restraining mechanical joint gasket for ductile iron pipe

Details Restraining mechanical joint gasket for ductile iron pipe Restraining mechanical joint gasket for ductile iron pipe

2005-03-02

2008-08-12

Engle, Patricia (Department: 3673)

Seal for a joint or juncture

Seal between fixed parts or static contact against...

Contact seal for a pipe, conduit, or cable

C277S616000, C277S627000, C285S339000

Reexamination Certificate

active

07410174

ABSTRACT:
A restraining gasket for both sealing and preventing separation of a pipe joint used to join a bell end of a female ductile iron pipe to the male end of a mating ductile iron pipe. The gasket has a body formed from a compressible elastomeric material having a hardened metal ring located therein with gripping teeth. The hardened ring has an opening at one point in its circumference which is filled with rubber. The rubber-filled gap ensures that the gasket body seals first prior to engagement of the gripping teeth as the pipe joint is assembled.

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