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US 5,398,430 AGranted
Earth moving and compacting rig
OwnerThomas M. Scott, David R. Scottinventors
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OwnerThomas M. Scott, David R. Scottinventors
Estimating the term…
An earth moving and tamping apparatus rig is provided which can backfill a trench and compact the backfill materials up to 95% compaction. A bucket and a vibrator are attached to a backhoe. The bucket retrieves the filling material and either dumps the material into a trench or sifts it through adjustable screening blades that form the bottom of the bucket. The apparatus includes a means to swivel the bucket 360.degree. with respect to the boom. The end of the bucket then compacts the filling materials into the trench. Each moving rig apparatus may also be equipped with an alternative two-bucket system, where one bucket fits inside the other one or is along side thereof. For trenches as wide as two feet to increase the area of dirt tamped, the two-bucket may be secured in juxtaposition to each other. For more narrow trenches, the second bucket may be closed inside the first bucket and the area tamped will only be the width of a single bucket. The earth moving and tamping apparatus rig is a device by which a backfilling job may be done more efficiently and less expensive than the present method employing multiple workers and machines.
A system for tamping of material in a trench opening, comprising, a powered vehicle having a boom means coupled to said vehicle at one end and adjustably controlled therefrom and having an opposite end, bucket means coupled to said opposite end of said boom means, said bucket means consisting of a pair of buckets operating as a clamshell bucket, with one of said pair of buckets closing inside the other of said pair of buckets so as to provide a narrow tamping plate to fit into a narrow trench opening, vibrating means coupled to the end of said boom means and external of said bucket means for periodically vibrating said bucket means so as to assist in tamping and in compacting material dumped in said trench opening by said bucket means, and means positioned between said vibrating means and said boom means for absorbing and minimizing vibrations during the tamping and compacting of material placed by said bucket means in said trench opening.
A system for tamping of material in a trench opening as recited in 1, wherein said means for periodically vibrating said bucket means is positioned between the opposite end of said boom means and said bucket means, said system further incorporating a rubber cushion device to absorb vibrations from said vibration means.
Dependencies are inferred from the claim text.