Fluid handling – With leakage or drip collecting
Reexamination Certificate
2011-08-30
2011-08-30
Rivell, John (Department: 3753)
Fluid handling
With leakage or drip collecting
C137S067000, C137S068110, C251S074000, C251S067000, C122S504000, C122S507000, C122S014300
Reexamination Certificate
active
08006714
ABSTRACT:
An automatic flow shut-off unit for shutting off water to an appliance (e.g. commode) when a leak or overflow occurs. The unit includes an outer housing having a ball valve mounted thereon wherein the valve is connected between the water supply and the appliance. A tripper unit is mounted in the outer housing and has a plunger therein. The valve is connected to the plunger by a length of actuation material (e.g. flexible cable). A compression spring is positioned in the tripper unit to normally bias the plunger downwards. A cartridge having a water reactive material (e.g. commercially-available toilet paper) thereon is removably mounted in the outer housing wherein the water reactive material when dry supports the plunger in a cocked position but which will quickly weaken and disintegrate upon contact with water.
REFERENCES:
patent: 2798503 (1957-07-01), Carver et al.
patent: 3920031 (1975-11-01), Maxfield
patent: 4305420 (1981-12-01), Nussorf
patent: 4381710 (1983-05-01), Watterback
patent: 4696319 (1987-09-01), Gant
patent: 4930934 (1990-06-01), Adkins
patent: 5771916 (1998-06-01), Armenia et al.
patent: 6024116 (2000-02-01), Almberg et al.
patent: 6117311 (2000-09-01), Stockhowe et al.
patent: 6253785 (2001-07-01), Shumake et al.
patent: 6254823 (2001-07-01), Rees
patent: 6336469 (2002-01-01), Nixon et al.
patent: 6354322 (2002-03-01), Clark
patent: 6543471 (2003-04-01), Carroll
patent: 6792967 (2004-09-01), Franklin
patent: 6810902 (2004-11-01), Bootka
patent: 6895990 (2005-05-01), Carroll
patent: 6899122 (2005-05-01), Mele
patent: 7424896 (2008-09-01), Martin et al.
patent: 7562673 (2009-07-01), Martin et al.
patent: 7665482 (2010-02-01), McLean
patent: 7703476 (2010-04-01), Carroll
patent: 2004/0081804 (2004-04-01), Basler et al.
Jones Lloyd G.
Martin James B.
Drude Faulconer
Le Minh
Rivell John
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