Pipeline padding machine

Details Pipeline padding machine Pipeline padding machine

1992-07-17

1993-12-21

Reese, Randolph A.

Excavating

Ditch filler

405179, 209257, 209260, 209413, 209420, E02F 522

Patent

active

052711684

ABSTRACT:
A padding machine used for overlaying a pipeline disposed within a trench with sifted dirt to eliminate contact by rock or other abrasive material with the pipeline and, thereby, preclude rusting, corrosion or like damage. A trench typically lies along the edge of a right-of-way on which the padding machine travels, i.e. pulling, for example, as from a tractor. Raw filling material is introduced onto a shaker driven and/or vibrating screen through the use of, for example, a common backhoe. Rocks or larger sized particles move, by gravity, onto the right-of-way adjacent the side of the machine opposite to that of the trench, where sifted filler material passes onto and from a moving conveyor which is directed toward the desired covering relationship with the pipeline. A feature of the padding machine is the use of a boom which interconnects the freely vertical movable front end of the padding machine to a towing vehicle and includes an hydraulically operated piston for leveling purposes, i.e. maintains a constant distance between the bottom of the equipment and the ground surface irrespective of changes in terrain. Mechanism at the front end of the padding machine serves to control hydraulic and air functions and/or anything else required for effective operation, as conveyor speed, rate of machine movement, and the like.

REFERENCES:
patent: 2814387 (1957-11-01), McWilliams
patent: 3701422 (1972-10-01), Downey
patent: 4256572 (1981-03-01), Read
patent: 4633602 (1987-01-01), Layh et al.
patent: 4633602 (1991-11-01), Layh et al.
patent: 5106490 (1992-04-01), McDonald
patent: 5120433 (1992-06-01), Osadchuk
patent: 5183160 (1993-02-01), McClain

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