Pump comprising a shield valve controlled by the conveying medium
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United States of America Patent
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N/A
Issued Date -
Mar 9, 2006
app pub date -
May 14, 2003
filing date -
Jul 22, 2002
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A pump is provided having at least one shield valve controlled by the conveyed medium and having a valve disk (4) of flexible material which is clamped in a central region and is movable between an open and a closed position, in which closed position the valve disk (4) closes at least one valve opening (9). The pump according to the invention includes extensions (11) that project from the valve disk (4) and/or on a valve abutment surface (10) arranged on a side remote from the valve opening (9), for avoiding a sudden flat abutment of the valve disk (4) on the valve abutment surface and/or for limiting the valve opening movement. The pump according to the invention is distinguished by a particularly low noise operation.
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