초록 ▼

A concrete lid for an in-ground utilities box includes a plastic reinforcement structure filled with concrete. The plastic reinforcement structure includes one or more plastic sidewalls that protect the edges of the lid from damage. The upper and lower surfaces of the lid are exposed concrete (with

A concrete lid for an in-ground utilities box includes a plastic reinforcement structure filled with concrete. The plastic reinforcement structure includes one or more plastic sidewalls that protect the edges of the lid from damage. The upper and lower surfaces of the lid are exposed concrete (with the exception of the upper and lower edges of the one or more plastic sidewalls). The one or more plastic sidewalls laterally surround a plastic reinforcement grid, which is centrally located between the upper and lower edges of the one or more plastic sidewalls. The one or more plastic sidewalls can be integrally formed with the plastic reinforcement grid. The plastic reinforcement grid reinforces the concrete lid, eliminating the need for separate reinforcement material. Support struts can be used to support the plastic reinforcement grid while wet concrete is being poured into the plastic reinforcing structure.

대표청구항 ▼

We claim: 1. A method of forming a lid for a utilities box, the method comprising: coupling a plastic reinforcing structure to a mold, wherein the plastic reinforcing structure includes one or more circumscribing plastic sidewalls, wherein a first edge of the one or more circumscribing plastic side

We claim: 1. A method of forming a lid for a utilities box, the method comprising: coupling a plastic reinforcing structure to a mold, wherein the plastic reinforcing structure includes one or more circumscribing plastic sidewalls, wherein a first edge of the one or more circumscribing plastic sidewalls engages the mold; then filling the plastic reinforcing structure with concrete, wherein the concrete is laterally contained by the one or more circumscribing plastic sidewalls of the plastic reinforcing structure; curing the concrete, thereby creating cured concrete that bonds to the plastic reinforcing structure; and removing the mold from the plastic reinforcing structure and the cured concrete, thereby forming a lid that includes the cured concrete and the plastic reinforcing structure, wherein the one or more circumscribing plastic sidewalls form sidewalls of the lid. 2. The method of claim 1, further comprising forming a pattern in the concrete with the mold. 3. The method of claim 1, further comprising forming one or more lift holes in the concrete with the mold. 4. The method of claim 1, wherein the step of filling the plastic reinforcement structure comprises pouring wet concrete into the plastic reinforcement structure, wherein the wet concrete passes through openings in a plastic reinforcement grid that is integrally formed with, and centrally located within, the plastic reinforcement structure. 5. The method of claim 4, further comprising supporting the plastic reinforcement grid with one or more support struts that extend between the plastic reinforcement grid and the mold. 6. The method of claim 4, further comprising: connecting one or more lift rods to the plastic reinforcement grid; and exposing portions of the one or more lift rods through the concrete using the mold. 7. The method of claim 6, further comprising positioning the one or more lift rods such that the plastic reinforcement grid is located between the lift rods and the mold. 8. The method of claim 1, further comprising coupling a nameplate mounting structure to the plastic reinforcement grid, wherein a first portion of the nameplate mounting structure contacts the mold, such that the concrete does not reach the first portion of the nameplate mounting structure. 9. The method of claim 3, further comprising attaching a nameplate to the first portion of the nameplate mounting structure, after removing the mold. 10. The method of claim 1, wherein the step of curing the concrete includes heating the concrete.