Paving block formed of rubber crumb and a method of manufacturing the same
AssigneeInpress Technologies Inc.
InventorClark Chow
Life of this patent
Estimating the term…
Abstract
A hollow paving block comprises a substantially planar member having a first surface and a second surface opposite the first surface. The first surface of the planar member is a textured surface which functions as a top of the paving block. A side wall extends along and away from a periphery of the second surface of the planar member to define a cavity in the paving block. The side wall has a bevelled edge which extends about a mouth of the cavity. At least one protrusion extends along the second surface of the planar member. The paving block is formed in part from crumb rubber and polyolefin.
Claims17
A hollow paving block comprising:
- a substantially planar member having a first surface and a second surface opposite the first surface, the first surface being a textured surface which functions as a top of the paving block;
- a side wall extending along and away from a periphery of the second surface of the planar member to define a cavity in the paving block, the cavity having a mouth, and the wall having a bevelled edge extending about the mouth of the cavity;
- and
- at least one protrusion extending from the second surface of the planar member wherein the paving block is formed from crumb rubber and a polyolefin, and the polyolefin forms a matrix for an inner layer of crumb rubber with the textured surface being a result of granules of crumb rubber extending through the polyolefin matrix.
A hollow paving block comprising:
- a substantially planar member having a first surface and a second surface opposite the first surface, the first surface being a textured surface which functions as a top of the paving block;
- a side wall extending along and away from a periphery of the second surface of the planar member to define a cavity in the paving block, the cavity having a mouth, and the wall having a bevelled edge extending about the mouth of the cavity;
- at least one protrusion extending along the second surface of the planar member, and wherein the block is approximately 50% to 80% by weight crumb rubber which is less than 20 mesh crumb rubber, and approximately 18% to 40% by weight polyolefin having a melting index ranging from approximately 5 g/10 minutes to approximately 50 g/10 minutes and selected from the group consisting of polyethylene and polypropylene wherein the textured surface being a result of granules of crumb rubber extending through the polyolefin matrix.
Dependencies are inferred from the claim text.