Pump body and method for making same
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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-
Feb 5, 2002
Grant Date -
N/A
app pub date -
Apr 10, 2000
filing date -
Aug 1, 1997
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A pump of the type comprising a substantially cylindrical body (1) in one piece provided, in its lower part, with a port (11) for admission of a product and with a valve constituted by a cavity (10) containing an element (2) capable of moving between a lower stop (12b) corresponding to the obturation of said admission port (11) and an upper stop (12a) corresponding to the opening of said port (11), and wherein said upper stop (12a) is formed by at least one discontinuous internal projection (12) whose transverse dimension (x) measured in the cavity (10) is at least equal to 20% of the largest transverse dimension of the mobile element (2).
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