Multi-layered structure for tree well skirts and sidewalks and method of making same
OwnerKaroleen B. Alexanderinventor
Life of this patent
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Abstract
A flexible, porous and durable tree well skirt and a sidewalk structure are made of a cushion base of butadiene rubber and a wear layer of ethylene propylene diene monomer (EPDM). The butadiene rubber is mixed with an isocyanate polyurethane binder and spread on the ground around the tree to form the cushion base of the tree well skirt. The EPDM is mixed with an isocyanate polyurethane binder and spread over the cushion base to form the wear layer. The cushion base and wear layer structure used for a sidewalk is spread over a stabilized porous base.
Claims40
A structure for use as a tree well skirt or sidewalk, comprising:
- a base layer of rubber and a binder;
- and
- a base layer of ethylene propylene diene monomer (EPDM) and a binder on top of the base layer.
A method of forming a tree well skirt, the steps of the method comprising:
- mixing butadiene rubber and a binder to form a pourable slurry;
- pouring the slurry of rubber and binder in place around a tree to form the base layer of a tree well skirt;
- mixing ethylene propylene diene monomer (EPDM) and a binder to form a pourable slurry;
- pouring the slurry of EPDM and binder in place over the base layer to form a wear layer;
- and
- leveling the poured ethylene propylene diene monomer and binder slurry.
A method of forming a sidewalk for use around trees, the steps of the method comprising:
- preparing a form to outline the sidewalk;
- preparing a leveling layer of porous composite material in the form;
- mixing butadiene rubber and a binder to form a pourable slurry;
- pouring the slurry of rubber and binder in place in the form or the leveling layer to form the base layer of the sidewalk;
- leveling the poured rubber and binder slurry;
- mixing ethylene propylene diene monomer (EPDM) and a binder to form a pourable slurry;
- pouring the slurry of EPDM and binder in place over the base layer to form a wear layer;
- and
- leveling the poured EPDM and binder slurry.
Dependencies are inferred from the claim text.