Float operated pneumatic pump

Details Float operated pneumatic pump Float operated pneumatic pump

1994-10-19

1996-03-05

Tsay, Frank S.

Wells

With eduction pump or plunger

Having sediment trap or deflector

417131, 417126, E21B 4300, E21B 106

Patent

active

054958903

ABSTRACT:
A float operated, top fill, recovery unit floats in a body of contaminated groundwater to recover a layer of liquid hydrocarbons residing on top of the groundwater. The recovery unit has an upper end fitted with a discharge check valve assembly and a lower end that is closed, the discharge valve assembly including a semi-permeable screen which is positioned in and skims the liquid hydrocarbons, and a series of passages and check valves for directing the hydrocarbons via a return line to a holding tank. In an embodiment disclosed, the lower end of the unit is formed in part by an inlet check valve arrangement which has had its check ball removed such that the arrangement does not operate to inhibit flow, and a closure plate is secured to the inlet valve arrangement to prevent external fluid from entering the unit. Sinking of the recovery unit allows hydrocarbons to pass through the screen to fill the interior of the unit so that it can be pumped out of the unit by compressed air and conveyed to the holding tank. The top fill recovery unit is easily modified to a bottom fill underground contaminated water recovery unit by removing the closure plate and replacing the check ball in the inlet valve arrangement, removing the top discharge valve assembly, and connecting the return line directly to the top of the unit.

REFERENCES:
patent: 2141261 (1938-12-01), Clark
patent: 2606500 (1952-08-01), Schmidt
patent: 3007416 (1961-11-01), Childs
patent: 3039309 (1962-06-01), Vesper et al.
patent: 3048121 (1962-08-01), Sheesley
patent: 3074351 (1963-01-01), Foster
patent: 3148624 (1964-09-01), Baldwin
patent: 3154021 (1964-10-01), Vick, Jr.
patent: 3173372 (1965-03-01), Baldwin
patent: 3175498 (1965-03-01), Rohrer
patent: 3194170 (1965-07-01), Ulbing
patent: 3298320 (1967-01-01), Latham, Jr.
patent: 3647319 (1972-03-01), McLean et al.
patent: 3677667 (1972-07-01), Morrison
patent: 3724973 (1973-04-01), Shill
patent: 3816032 (1974-06-01), Flynn et al.
patent: 3949753 (1976-04-01), Dockhorn
patent: 3983857 (1976-10-01), O'Connor
patent: 3987775 (1976-10-01), O'Connor
patent: 4020978 (1977-05-01), Szczepanski
patent: 4030640 (1977-06-01), Citrin et al.
patent: 4104005 (1978-08-01), Poirier
patent: 4184811 (1980-01-01), Schade
patent: 4257751 (1981-03-01), Kofahl
patent: 4295801 (1981-10-01), Bennett
patent: 4438654 (1984-03-01), Torstensson
patent: 4489779 (1984-12-01), Dickinson et al.
patent: 4580952 (1986-04-01), Eberle
patent: 4585060 (1986-04-01), Bernardin et al.
patent: 4669554 (1987-06-01), Cordry
patent: 4701107 (1987-10-01), Dickinson et al.
patent: 4727936 (1988-03-01), Mioduszewski et al.
patent: 4807707 (1989-02-01), Handley et al.
patent: 4886432 (1989-12-01), Kimberlin
patent: 4998585 (1991-03-01), Newcomer et al.
patent: 5004405 (1991-04-01), Breslin
patent: 5141404 (1992-08-01), Newcomer et al.
patent: 5147185 (1992-09-01), Niehaus et al.

Affiliated with

Also associated with

Rating

Float operated pneumatic pump does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Float operated pneumatic pump, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Float operated pneumatic pump will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1406849