Chemical barrier plug assembly and manufacturing and...

Details Chemical barrier plug assembly and manufacturing and... Chemical barrier plug assembly and manufacturing and...

2007-08-23

2011-11-22

Brinson, Patrick F (Department: 3754)

Pipes and tubular conduits

With closures and plugs

C138S090000, C166S292000

Reexamination Certificate

active

08061388

ABSTRACT:
A barrier plug assembly for incorporation into a lower portion of a plumbing installation for supporting a column of test water during inspection of the installation includes a tubular plumbing segment for sealingly securing between and in fluid communication with opposing and spaced apart portions of a plumbing installation, the tubular plumbing segment being formed of plumbing segment material and having a plumbing segment interior and a substantially smooth and continuous plumbing segment interior surface; and a barrier plug having a plug upper surface and a plug lower surface, and having a plug circumferential surface adhering to the plumbing segment interior surface and extending diametrically across and sealing the plumbing segment interior until dislodged by a plug dislodgement triggering means; so that upon plug dislodgement the test water drains and the plumbing installation is operational.

REFERENCES:
patent: 1549168 (1925-08-01), Townsend
patent: 1710439 (1929-04-01), Taylor
patent: 4342336 (1982-08-01), Satterthwaite et al.
patent: 4506706 (1985-03-01), Sandmann
patent: 5479986 (1996-01-01), Gano et al.
patent: 5685372 (1997-11-01), Gano

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