Diaphragm pump with pressure chamber having a ribbed wall
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United States of America Patent
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Apr 4, 1989
Grant Date -
N/A
app pub date -
Nov 30, 1987
filing date -
Sep 22, 1987
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A pressure chamber of a diaphragm pump having an outer chamber improved so that it is free from stress concentration. The inner wall surface of the pressure chamber is recessed in a mero-spherical shape. In order to support this chamber wall from its rear side, an outer ring rib is provided along the outermost periphery of the outer surface of the chamber, and an inner ring rib is circumferentially disposed at the inner side of the outer ring rib. Further, radial ribs are provided so as to connect together the outer and inner ring ribs in the radial direction.
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