Invertible auger

Details Invertible auger Invertible auger

1998-03-13

2000-07-18

Schoeppel, Roger

Boring or penetrating the earth

With tool drive prime mover or above-ground mechanical...

175323, 175394, E21B 1044

Patent

active

060893346

ABSTRACT:
An earth auger has a center shaft and a helical flighting extending along the axis of the shaft. The flighting and the center shaft have opposite ends that are identical in construction, so that the auger can be driven from either end by a power unit.

REFERENCES:
patent: 1848762 (1932-03-01), Atkinson
patent: 2221680 (1940-11-01), Parrish
patent: 2320612 (1943-06-01), Kandle
patent: 2821364 (1958-01-01), Godfrey
patent: 3072205 (1963-01-01), Govin
patent: 3174801 (1965-03-01), Owen et al.
patent: 3178210 (1965-04-01), Dickinson
patent: 3995706 (1976-12-01), White
patent: 4699226 (1987-10-01), Muller et al.
patent: 5556217 (1996-09-01), Deyo et al.

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