Pneumatic device for excavating and removing material

Details Pneumatic device for excavating and removing material Pneumatic device for excavating and removing material

1991-06-14

1992-08-25

Reese, Randolph A.

Excavating

Peat excavators

137874, 137876, 406112, 37 62, 37 63, E02F 502, F16K 100

Patent

active

051407590

ABSTRACT:
A high velocity pneumatic device for excavating and removing material such as soil. The device includes a pressure tube having an inlet connected to a source of gas, such as air, under pressure and an outlet end connected to the distal end of a removal conduit. An annular member is secured in the distal end of the removal conduit and defines an annular chamber that communicates with the outlet end of the pressure tube. A plurality of first nozzles communicate with the chamber and face outwardly of the distal end of the removal conduit, while a plurality of second nozzles communicate with the chamber and face inwardly of the conduit. A manually operated valve member is disposed in the chamber and rotation of the valve member will selectively discharge air through the first nozzles to provide an excavating action, or through the second nozzles to provide an aspirating action for the removal of material or through both the first and second nozzles to create both an excavating and removal mode of operation.

REFERENCES:
patent: 1778942 (1930-10-01), Harp
patent: 2599980 (1952-06-01), Dunning
patent: 2711598 (1955-06-01), Craggs, Jr.
patent: 4479741 (1984-10-01), Berti et al.
patent: 4705627 (1987-11-01), Miwa et al.
patent: 4776731 (1988-10-01), Briggs et al.
patent: 4936031 (1990-06-01), Briggs et al.
patent: 4946434 (1990-08-01), Plaisted et al.
patent: 4991321 (1991-02-01), Artzberger
patent: 4995175 (1991-03-01), Winter

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