Skimmer

Details Skimmer Skimmer

2005-07-05

2005-07-05

Batson, Victor (Department: 3671)

Earth working

Mounting for pushed tool at end of motor vehicle

Transversely mounted blade

C037S410000, C037S444000, C172S019000, C172S817000

Reexamination Certificate

active

06913086

ABSTRACT:
Apparatus and method for shearing a soil layer and removing it is provided. An apparatus in accord with the present invention has a frame mounting a shearing blade reciprocally movable substantially vertically into an operational position where the shearing blade will extend below the ground surface to shear the layer of soil above the shearing blade from the soil beneath it. An apparatus will also have a pushing blade mounted for use in pushing sheared soil. In a method in accord with the present invention, apparatus is provided that includes a shearing blade and a pushing blade. Each of the blades is positionable in operational and non-operational positions. The pushing blade is placed in its non-operational position and the shearing blade is placed in the operational position and is used to shear an upper layer of soil to a desired depth to produce a sheared soil layer and to create a new surface layer below the sheared soil layer. The shearing blade is then placed in its non-operational position and the pushing blade is placed in its operational position and is used to push the sheared soil layer off the new surface layer.

REFERENCES:
patent: 2203713 (1940-06-01), Austin
patent: 3576214 (1971-04-01), Ratcliffe
patent: 4056328 (1977-11-01), Maxey
patent: 4568219 (1986-02-01), Berry
patent: 4749048 (1988-06-01), Kelly
patent: 4924945 (1990-05-01), Mork
patent: D335131 (1993-04-01), Devaney
patent: 5211247 (1993-05-01), Johnsen
patent: D358401 (1995-05-01), Devaney
patent: 6035562 (2000-03-01), Virnig et al.
patent: 6347670 (2002-02-01), Miskin

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