PLASTIC TUBES THAT BE

Brand	Owner	Address	Description
AQUA-SHIELD	W. ATLEE BURPEE COMPANY	300 Park Avenue Warminster PA 18974	Plastic tubes that can be filled with water for use as an insulating barrier for growing plants;
	Where the owner name is not linked, that owner no longer owns the brand

Technical Examples

Marine craft has a crushable frontal impact protection structure, comprising transverse bulkhead protecting passenger area; longitudinal crushable tubes; and transverse member. Webs and strengthen tubes, which may be made of extruded, heat treated aluminum; stainless steel; or plastic. Tubes in FIGS. 5 to 7 are splayed, to improve protection against angled impacts C. The forward ends of tubes are tapered, (FIG. 3) to initiate deformation. Tubes may be hexagonal, round, or oval in cross-section. FIG. 8 shows longitudinal bulkheads, and transverse bulkhead in place of tubes. FIG. 9 shows longitudinal corrugated sheets; these may be mounted transversely. FIG. 10 shows how area filled with deformable cellular foam, to act as a buoyancy aid if hull is breached. Side and roar impact protection is also disclosed.