Excavating – Ditcher – Condition responsive
Patent
1992-09-17
1994-03-22
Reese, Randolph A.
Excavating
Ditcher
Condition responsive
37347, 37905, 175 66, E21B 2106, E02F 388
Patent
active
052953173
ABSTRACT:
An apparatus supported on a truck bed and including a high pressure water conduit for dislodging earthen material for evacuation by a suction conduit. The evacuated material and water pass through a cyclone separator with the removed air directed through a secondary separator. A blower intake induces low pressure in the separators. Solids and water removed by the first mentioned separator are subjected to screening whereat water is reclaimed and returned to a tank from which a high pressure water pump draws. An air lock receives the earthen material and water from the separator. A modified air lock is disclosed for use with highly abrasive material. The screen is positionable about a horizontal axis by a hydraulic cylinder to maintain desired inclination for maximum dewatering of the evacuated material. A water conduit and valve system permit periodic drawing of water from a secondary tank when the level of the reclaimed water in the recovery tank falls below a certain level. Switches are provided at the site of the ground hole being formed to permit a worker to control both the high pressure water flow and the suction applied by the evacuation tool. An air box is utilized to provide a vacuum source for the evacuation of earthen material in those instances where dislodgement of earthen material is by a suction force alone without high pressure water.
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patent: 4936031 (1990-06-01), Briggs et al.
patent: 5016717 (1991-05-01), Simons et al.
patent: 5083386 (1992-01-01), Sloan
patent: 5109933 (1992-05-01), Jackson
patent: 5129468 (1992-07-01), Parmenter
patent: 5129469 (1992-07-01), Jackson
patent: 5140759 (1992-08-01), Artzberger
Givnan, Jr. James D.
McBee J. Russell
Reese Randolph A.
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