Richard B Croy

US Patent:

53801253, Jan 10, 1995

Filed:

May 14, 1993

Appl. No.:

8/026536

Inventors:

Richard L. Croy - Clearwater FL

International Classification:

B09B 300

US Classification:

405128

Abstract:

A fluid extraction device to remove fluid contaminants from the vadose zone of unsaturated subsurface area by selectively evacuating liquid and gas therefrom comprising a lower well screen assembly coupled to a vacuum source through an upper fluid conduit structure including a fluid flow control to separately extract liquid and vapor from the vadose zone and a fluid flow indicator to separately monitor the flow of liquid and vapor through the upper fluid conduit structure.

US Patent:

42602831, Apr 7, 1981

Filed:

Jul 16, 1979

Appl. No.:

6/057646

Inventors:

Richard L. Croy - Clearwater FL

International Classification:

E02B 1100
E03B 318

US Classification:

405 36

Abstract:

A de-watering system of the type used to lower the water table by extracting water from below ground through the use of an elongated header conduit having a negative pressure placed thereon wherein a plurality of swing joints and well point assemblies are interconnected to the header conduit and jetted into the ground utilizing a forced stream of water to a predetermined depth. The well point assembly includes an outer strainer pipe disposed in surrounded, concentric relation to an inner down pipe wherein a plurality of slots are formed in the strainer pipe through which water passes into access with the distal open end of the down pipe. Water is drawn from the interior of the down pipe into the elongated header circuit to the point of ultimate disposition of the collected water.

US Patent:

55097570, Apr 23, 1996

Filed:

Jan 9, 1995

Appl. No.:

8/369901

Inventors:

Richard L. Croy - Clearwater FL

International Classification:

B09B 300

US Classification:

405128

Abstract:

A fluid extraction device to remove fluid contaminants from the vadose zone of unsaturated subsurface area by selectively evacuating liquid and gas therefrom comprising a lower well screen assembly coupled to a vacuum source through an upper fluid conduit structure including a fluid flow control to separately extract liquid and vapor from the vadose zone and a fluid flow indicator to separately monitor the flow of liquid and vapor through the upper fluid conduit structure.