Fluid handling – Line condition change responsive valves – Direct response valves
Reexamination Certificate
2008-04-01
2008-04-01
Krishnamurthy, Ramesh (Department: 3753)
Fluid handling
Line condition change responsive valves
Direct response valves
C137S512150, C206S524800, C303S061000, C303S115600
Reexamination Certificate
active
10896734
ABSTRACT:
A one-way valve allows air to be drawn from a collapsible, flexible, airtight bag using a vacuum source. When the vacuum source is removed, the one-way valve prevents air from re-entering the bag. The valve assembly comprises a base, a valve element supported by the base, and a cap fitted onto an end of the base that is disposed in the exterior of the bag. The base comprises a flange that is disposed in the interior of the bag and is joined to a peripheral area surrounding a hole in one wall of the bag. One surface of the flange has a series of concentric heat-concentrating circular beads for speeding up the conduction heat sealing operation by which the valve assembly is attached to the bag. The valve cap is provided with a circular wall that presses the diaphragm of the valve element against a circular bead on an annular seat formed on the base for supporting the valve element.
REFERENCES:
patent: 3799427 (1974-03-01), Goglio
patent: 3949934 (1976-04-01), Goglio
patent: 5368394 (1994-11-01), Scott et al.
patent: 5450963 (1995-09-01), Carson
patent: 5829884 (1998-11-01), Yeager
patent: 5989608 (1999-11-01), Mizuno
patent: 6033113 (2000-03-01), Anderson
patent: 6070728 (2000-06-01), Overby et al.
patent: 6089271 (2000-07-01), Tani
patent: 6408872 (2002-06-01), Skeens et al.
patent: 6604634 (2003-08-01), Su
patent: 6634384 (2003-10-01), Skeens et al.
patent: 6776301 (2004-08-01), Torres-White et al.
patent: 2002/0117215 (2002-08-01), Skeens et al.
patent: 2002/0144740 (2002-10-01), Skeens et al.
patent: 1548244 (1979-07-01), None
Illinois Tool Works Inc.
Krishnamurthy Ramesh
Ostrager Chong & Flaherty & Broitman P.C.
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