Title: Air operated pump

Abstract: A generally elongated cylindrical pump adapted to be lowered into a fluid producing formation comprising a hollow annular outer chamber circumferentially about a hollow cylindrical inner chamber, a valve mounted in said inner chamber, a source of compressed gas adapted to be applied to said valve, a float reciprocally mounted in said inner chamber coacting with said valve to apply said compressed gas to said inner chamber when said float is raised to a predetermined height and the fluid is then forced through said outer chamber to an outlet bore; the compressed gas applied to said inner chamber is cut off when such pumping operation is completed.

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Inventors: Anthony, David S. (San Antonio, TX, US)
Turner, Jr., Leonard M. (Von Ormy, TX, US)

Application Number: 750445
Filing Date: 1976-12-14
Publication_date: 1978-05-30
Assignee:
Primary Class(es): 417/131 417/147
Other Classes:
US Patent Ref:

2007745	Jul, 1935	Coy et al.	417/131.
2209617	Jul, 1940	Thomas	417/131.
2223417	Dec, 1940	Havens	417/131.
3138113	Jun, 1964	Arutunoff	417/131.
3415199	Dec, 1968	Elliott et al.	417/131.

Other Refs:
Primary Examiner: Croyle, Carlton R.
Assistant Examiner: Gluck, Richard E.
Attorney: Stahl; John C.