Ramp and method of construction
View Patent ↗A ramp constructed of an expanded plastic foam parallelepiped core encased in a thick coating of polyurea provides a lightweight, stable ramp suitable for vehicle servicing. A low angle, long length ramp of a low weight is provided. Heavy duty versions have on edge panels embedded in the core.
1. A ramp comprising a core comprised of a parallelepiped substantially solid block of low density plastic foam with a front face at an entry end sloping from a bottom side to a substantially horizontal top surface; and
a polyurea coating applied over the core to encase said core therein and substantially strengthen said core as well as providing a durable ramp surface.
2. The ramp according to claim 1 wherein said polyurea coating has a thickness on the order of 35–65 mils.
3. The ramp according to claim 1 wherein said low density plastic foam core is constructed of expanded polystyrene foam.
4. The ramp according to claim 1 wherein said polyurea coating has a top coat of polyurea applied thereto.
5. The ramp according to claim 1 wherein said core has a panel extending on edge between said top face and said bottom side embedded within said plastic foam block.
6. The ramp according to claim 5 wherein said core has a plurality of on edge sheets of spaced panels embedded in said low density plastic foam block.
7. The ramp according to claim 6 wherein a plastic, cardboard or plywood panel covers each side of said core.
8. The ramp according to claim 1 wherein said sloping front face is at an angle on the order of 10° from the bottom side.
9. The ramp according to claim 8 wherein said ramp is of a length ranging from about 5 feet to 6 feet.
10. The ramp according to claim 3 wherein said expanded polystyrene foam core is of a density ranging from 1 to 6 pounds per cubic foot.