Controller less resilient bladder pump for reduced diameter casing with long cycle
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United States of America Patent
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-
Jan 6, 1998
Grant Date -
N/A
app pub date -
Nov 8, 1995
filing date -
Nov 8, 1995
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A conventional vibrator for actuating small diameter pump is tapped at the small volume pressure chamber and communicated to a plugged, elongate hose, thus expanding the actuating pressure chamber of the vibrator conveniently to virtually any required volume within the small casing environment. With the expanded pressure chamber, cycle period of the vibrator can be extended to virtually any desired time cycle without performance limiting closure of the needle valve regulator. An elongate bladder forms the periodic pressure actuated positive displacement volume for the pump. By increased length of the bladder, correspondingly increased cycle pumping volume is provided for the pump. At the same time, bladder expansion provides sufficient pump inlet pressure to enable the use of free floating check valves. A high volume, slow cycle pump for the narrow casing environment results.
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