Pump
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United States of America Patent
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-
Aug 31, 1999
Grant Date -
N/A
app pub date -
Aug 25, 1995
filing date -
Feb 27, 1993
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A pump having a simple and compact construction which permits leakage test of the pressure valve both outside and inside the pump housing, and, if necessary, ensures ease of replacement of individual parts, such as replacement of the pressure valve or the valve seat member, if leakage occurs during testing. The peripheral surface of the valve seat member facing the cover has a conical chamfer onto which an annular projection of the cover is movable into sealing abutment and is radially expandable to provide a press fit engagement.
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