Backfill machine

Details Backfill machine Backfill machine

1989-01-09

1990-04-03

Reese, Randolph A.

Excavating

Ditch filler

37 82, 37190, 171 15, 171123, 405104, E02F 100

Patent

active

049128620

ABSTRACT:
The invention comprises a mobile backfilling machine wherein raw materials located adjacent an excavated trench are picked up, graded and delivered to the open trench in an order of size grading from finest to coarsest, thereby providing a fine material padding for a product which has been placed into the trench. The machine may also be used to place a warning ribbon into the trench at a point above the padding.

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patent: 2857691 (1961-05-01), Curran
patent: 3503450 (1970-03-01), Day
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patent: 3872929 (1975-03-01), Theurer et al.
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patent: 4193636 (1980-03-01), Jakob
patent: 4479439 (1984-10-01), Theurer et al.
patent: 4633602 (1987-01-01), Layh et al.
patent: 4664791 (1987-05-01), McClain et al.

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