Plug incorporating pressure-sensitive valve

Fluid handling – Systems – Flow path with serial valves and/or closures

Reexamination Certificate

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Details

C137S614180, C137S540000, C137S514000, C251S318000, C251S339000

Reexamination Certificate

active

11345515

ABSTRACT:
A plug which is insertable into a outlet from a vessel, to seal the vessel so that it may hold liquid. To prevent overflow, the plug has an in-built valve which automatically opens when it experiences a predetermined threshold pressure. The threshold pressure can be adjusted to cater for vessels of differing size.

REFERENCES:
patent: 2553991 (1951-05-01), Wagner et al.
patent: 3662950 (1972-05-01), McIntosh et al.
patent: 3911508 (1975-10-01), Goldberg
patent: 4597112 (1986-07-01), Cuschera
patent: 4903943 (1990-02-01), Hochstrasser
patent: 5105850 (1992-04-01), Harris
patent: 5494069 (1996-02-01), Bergmann
patent: 6219861 (2001-04-01), Chen
patent: 6779554 (2004-08-01), Weis et al.
patent: B-30611/95 (1996-03-01), None
patent: 1358773 (1974-07-01), None
patent: 2261600 (1993-05-01), None
patent: 2 285 216 (1995-07-01), None
patent: WO 91/16847 (1991-11-01), None
patent: WO 03/102314 (2003-12-01), None

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