Check valve, especially for the medical technique
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United States of America Patent
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Jun 30, 1998
Grant Date -
N/A
app pub date -
Jan 9, 1997
filing date -
Dec 6, 1995
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A check valve, especially for the medical technique having a first hose connector housing (1) and a second hose connector housing (2) and further a flexible diaphragm disk (3) positioned between the two joined hose connector housings (1, 2). At an overpressure in an entry space (6) the diaphragm disk (3) can be lifted from a lip-shaped sealing ring (13), whereby a flow cross-sectional area is created, and wherein the diaphragm disk (3) at an overpressure in an exit space (7) safely and in minimal times can be pressed onto a sealing seat to close the valve. The circular diaphragm disk (3) is produced from liquid silicone, silicone rubber or natural rubber and the thickness (3c) of the diaphragm cross-section (3a) is uniform.
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