Controller less resilient bladder pump for reduced diameter casi

Details Controller less resilient bladder pump for reduced diameter casi Controller less resilient bladder pump for reduced diameter casi

1995-11-08

1998-01-06

Thorpe, Timothy

Pumps

Expansible chamber type

Inlet and discharge distributors at opposite ends of tubular...

417480, F04B 4300

Patent

active

057047723

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.

REFERENCES:
patent: 4701107 (1987-10-01), Dickinson et al.
patent: 4749337 (1988-06-01), Dickinson et al.
patent: 4808084 (1989-02-01), Tsubouchi et al.

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