Diaphragm pump
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United States of America Patent
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Dec 2, 2003
Grant Date -
N/A
app pub date -
Aug 14, 2001
filing date -
Feb 16, 1999
priority date (Note) -
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status (Latency Note)
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Abstract
A diaphragm pump with a diaphragm (1) of elastic material, which includes a receiving cavity (4) in a reinforced central area (3) for a connecting rod head (5) of a connecting rod which displaces the diaphragm (1). The diaphragm (1) includes a clamping rim (2) for securing the diaphragm to the pump housing. On the upper side (8) of the diaphragm (1) which is proximal to the pump chamber, at least one circularly disposed rib (9) is provided essentially radially outward from and proximal to a central area (3) which area is bounded by the outline of the connecting rod head (5) or by the outline of a part of the diaphragm (1) near to the said connecting rod head (5). A plurality of ribs (9), spaced in a radial direction one from the other are provided and are located where the forces introduced by the connecting rod head (5) spread into the radial, neighboring ring area of the diaphragm.
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