Drainage beads
AssigneeRapac
InventorsDennis Wayne Koerner, Carl David Ring, Jonathan Browning Jackson
Life of this patent
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Abstract
Polystyrene drainage heads having optimized shapes to provide increased specific gravity and void volume at a given bulk density. Expanded forms of such drainage beads may be used as a geosynthetic aggregate in pre-assembled drainage units. Such pre-assembled drainage units may be used as foundation drains, septic drainage fields, or for other applications.
Claims20
1-27. (canceled)
An aggregate comprising a plurality of expanded polystyrene drainage beads, wherein at least some of the drainage beads comprise a central spine including a first side and a second side opposite the first side and a plurality of legs-extending from the central spine and defining a plurality of first channels between the first legs and a plurality of second channels between the second legs;
- and wherein the aggregate of expanded polystyrene drainage beads further comprise a specific gravity and a bulk density such that a ratio of specific gravity to bulk density is greater than 2.3.
An aggregate comprising a plurality of expanded polystyrene drainage beads, wherein at least some of the drainage beads comprise a central spine including a first side and a second side opposite the first side and a plurality of legs-extending from the central spine and defining a plurality of first channels between the first legs and a plurality of second channels between the second legs;
- and wherein the aggregate of expanded polystyrene drainage beads further comprise a specific gravity and a bulk density such that a ratio of specific gravity to bulk density is greater than 2.3 and less than 2.875.
Dependencies are inferred from the claim text.