Two-part gasket for pipe-to-pipe connections

Details Two-part gasket for pipe-to-pipe connections Two-part gasket for pipe-to-pipe connections

2007-08-07

2007-08-07

Pickard, Alison K. (Department: 3673)

Seal for a joint or juncture

Seal between fixed parts or static contact against...

Contact seal for a pipe, conduit, or cable

C277S611000, C277S619000, C277S638000, C277S626000, C277S644000, C277S575000, C277S905000, C285S112000

Reexamination Certificate

active

11051591

ABSTRACT:
A gasket for pipe-to-pipe connections, which is closely received within a rectangular-shaped annular groove in the bell end of a pipe, and provides a compressive, fluid-tight seal with the spigot end of another pipe. The gasket includes a two-part body having a substantially rectangular profile in section, including a relatively rigid component joined to a relatively resilient component. The resilient component includes a radially inwardly projecting sealing lobe for providing a compressive seal with the spigot end of a pipe, and a reinforcement portion of the rigid component is disposed between the sealing lobe and the pipe bell end to provide a radially non-compressible reaction surface against which the sealing lobe is compressed. The rigid component also includes a tapered leading edge portion for aligning and centering the spigot end of a pipe upon insertion within the gasket, and the leading edge portion is reinforced by a plurality of circumferentially spaced ribs.

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