Concrete plank and method for making it for elevated playing court surfaces
AssigneeSamuel M. Bell
InventorsJames P. Romualdi, Samuel M. Bell
Life of this patent
Estimating the term…
Abstract
A concrete plank and method for making it which duplicates the flexibility of a non-concrete plank of any given thickness which is used for an elevated playing court surface in which the concrete plank has a thickness which follows a given set of parameters. The concrete plank is reinforced with closely spaced layers of mesh.
Claims13
A method for making a composite mesh reinforced concrete plank which duplicates the flexbility of a non-concrete plank of a given thickness and which has sufficient strength for use in an elevated playing court surface which comprises:
- a. placing multiple layers of wire mesh within a U-shaped cross-sectional form having a desired length and width of the non-concrete plank to be duplicated in such a manner that the mesh is generally uniform and consistently distributed over the length, width and thickness of the cross-sectional form, the mesh has openings that are no greater than 0.75 inches and the layers of mesh are spaced apart no greater than 0.5 inches and the sizes of wire forming the mesh are such that the total amount of reinforcement is not less than 5 lbs. per cubic foot of reinforced concrete;
- b. filling the form with concrete to a thickness within the following parameters:
- (T.sub.c /T.sub.w) .sup.3 = E.sub.w /E.sub.c
- wherein:
- T.sub.c = thickness of the concrete plank,
- T.sub.w = thickness of the non-concrete plank which is to be duplicated and not to exceed two inches in thickness,
- E.sub.w = modulus of elasticity of the non-concrete plank to be duplicated, and
- E.sub.c = modulus of elasticity of the concrete plank;
- and
- c. removing the finished concrete plank from the form.
A method for making a composite mesh reinforced concrete plank which duplicates the flexibility of a non-concrete plank of a given thickness for use in an elevated playing court surface which comprises extruding a mixture of concrete which is combined with layers of mesh which are unrolled through an orifice having a width and length of the non-concrete plank to be duplicated in such a manner that the mesh is generally uniform and consistently distributed over the length, width and thickness of the concrete plank form within the following parameters:
- (T.sub.c /T.sub.w) .sup.3 = E.sub.w /E.sub.c
- wherein:
- T.sub.c = thickness of the concrete plank,
- T.sub.w = thickness of the non-concrete plank which is to be duplicated and not to exceed two inches in thickness,
- E.sub.w = modulus of elasticity of the non-concrete plank to be duplicated, and
- E.sub.c = modulus of elasticity of the concrete plank,
- the mesh has openings that are no greater than 0.75 inches and the layers of mesh are spaced apart no greater than 0.5 inches and the sizes of wire forming the mesh are such that the total amount of reinforcement is not less than 5 lbs. per cubic foot of reinforced concrete.
A method for making a composite mesh reinforced concrete plank which duplicates the flexibility of a non-concrete plank of a given thickness for use in an elevated playing court surface which comprises forming a mixture of concrete and distribiting layers of mesh to the desired length and width of the non-concrete plank to be duplicated in such a manner that the mesh is generally uniform and consistently distributed over the length, width and thickness of the concrete plank within the following parameters:
- (T.sub.c /T.sub.w) .sup.3 = E.sub.w /E.sub.c
- wherein:
- T.sub.c = thickness of the concrete plank,
- T.sub.w = thickness of the non-concrete plank which is to be duplicated and not to exceed 2 inches in thickness,
- E.sub.w = modulus of elasticity of the non-concrete plank to be duplicated, and
- E.sub.c = modulus of elasticity of the concrete plank,
- the mesh has openings that are no greater than 0.75 inches and the layers of mesh are spaced apart no greater than 0.5 inches and the sizes of wire forming the mesh are such that the total amount of reinforcement is not less than 5 lbs. per cubic foot of reinforced concrete.
Dependencies are inferred from the claim text.