Methods and apparatuses for compacting soil and granular materials
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United States of America Patent
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Mar 9, 2021
Grant Date -
Oct 10, 2019
app pub date -
Jun 24, 2019
filing date -
Sep 5, 2013
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Abstract
Methods and apparatuses for compacting soil and granular materials. The soil compaction apparatuses include an arrangement of diametric expansion elements that, in their expanded state, form a larger compaction surface. In another embodiment, a compaction chamber can be provided with diametric restriction elements and a flow-through passage in the upper portion of the chamber exterior of a drive shaft. The diametric expansion or restriction elements can be fabricated from, for example, individual chains, cables, or wire rope, or a lattice of vertically and horizontally connected chains, cables, or wire rope. Embodiments of the soil compaction apparatus include, but are not limited to, closed-ended driving shafts, open-ended driving shafts, flow-through passages, no flow-through passages, removable rings for holding the diametric expansion/restriction elements, and any combinations thereof.
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