Single use valve
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United States of America Patent
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-
Nov 27, 2012
Grant Date -
Jan 1, 2009
app pub date -
Dec 28, 2006
filing date -
Dec 30, 2005
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A single use valve (10) comprises a plate (12) having an internal filter structure (28). A sealing substance (20) covers an inlet (14) to the filter structure (28). A heater arrangement (16) is arranged at the plate (12) in the vicinity of the sealing substance (20) for converting electrical current into heat and thereby melting or evaporating the sealing substance (20). The heater arrangement (16) conducts at least a part of the current, and preferably the entire current, along a conduction path not including the sealing substance (20). The melting of the sealing substance (20) thereby becomes independent on the existence of a complete electrical connection through the sealing substance (20). The heater arrangement (16) has therefore preferably its main heat emission in an area surrounding the sealing substance (20). The sealing substance (20) can be of any non-porous material.
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