Polymorphic Interlocking and Interchangeable Base System for Architectural, Landscape, and Recreational Feature Installations

Abstract

A polymorphic interlocking and interchangeable base system for architectural, landscape, and recreational feature installations is disclosed. Embodiments include expanded polymer units with lateral and vertical interlocking features, enabling seamless assembly in both horizontal and vertical planes. Each unit includes a stepped transition surface for enhanced load distribution and a protective polymer coating for durability. The system supports rotational orientation in 90-degree increments and accommodates field modifications, such as cutting or machining, to integrate plumbing, electrical, or structural components. Applications include golf greens, playgrounds, and other installations, with overlays like artificial turf or stone veneer templated for precise alignment. The modular design reduces installation time, material waste, and labor costs while offering infinite shape configurations. The system is compatible with various surfaces, including soil, concrete, and masonry, and provides a durable, versatile foundation for both interior and exterior applications.

What is claimed is: 
     
         1 . A system for forming a base for architectural, landscape, or recreational feature installations, comprising:
 a plurality of expanded polymer units, each expanded polymer unit comprising:
 a polymer base body having a planar top surface; 
 a plurality of lateral edges; 
 a stepped transition surface adjacent each lateral edge, the stepped transition surface comprising a series of horizontal load-supporting steps perpendicular to a gravity vector; 
 lateral interlocking features disposed on the plurality of lateral edges, the lateral interlocking features including complementary male and female profiles configured to engage corresponding male and female profiles of another expanded polymer unit to align adjacent planar top surfaces seamlessly; 
 vertical interlocking profiles configured to engage corresponding vertical interlocking profiles of another expanded polymer unit to support stacking of expanded polymer units in a vertical interlocked assembly; and 
 a protective polymer coating applied to the planar top surface and to the stepped transition surface, the protective polymer coating comprising an elastomeric material configured to bond to the stepped transition surface; 
 wherein the lateral interlocking features enable rotational orientation of each expanded polymer unit in 90-degree increments relative to adjacent units to form horizontal interlocked assemblies without redesign of polymer base bodies; 
 wherein the engaged lateral interlocking features maintain alignment in both horizontal and vertical planes to form a congruent, continuous structural foundation; 
 wherein each expanded polymer unit is field-modifiable by cutting or machining to accommodate insertion of at least one of plumbing, electrical components, structural elements, or decorative elements without altering the lateral interlocking features. 
   
     
     
         2 . The system of  claim 1 , wherein the polymer base body of each expanded polymer unit comprises expanded polymer foam. 
     
     
         3 . The system of  claim 1 , wherein the stepped transition surface of each expanded polymer unit comprises a series of stair-stepping transitions perpendicular to a gravity vector. 
     
     
         4 . The system of  claim 1 , wherein the protective polymer coating has a thickness in a range of 0.1 inch to 1.0 inch. 
     
     
         5 . The system of  claim 1 , wherein each expanded polymer unit further comprises corner alignment features at each vertex of the polymer base body. 
     
     
         6 . The system of  claim 1 , wherein the lateral interlocking features comprise complementary dovetail-shaped male and female profiles. 
     
     
         7 . The system of  claim 1 , wherein the vertical interlocking profiles comprise complementary pin and socket features configured to align and support stacking of the expanded polymer units. 
     
     
         8 . The system of  claim 1 , wherein each expanded polymer unit has a thickness of between 1 inch to 144 inches. 
     
     
         9 . The system of  claim 1 , wherein the protective polymer coating comprises a self-leveling elastomeric polymer curing within two hours, the curing being cross-linking of the protective polymer coating after application, resulting in a solid, durable finish. 
     
     
         10 . The system of  claim 1 , further comprising a finishing overlay templated to an arrangement of the expanded polymer units, wherein the finishing overlay is one or more of artificial turf, stone veneer, and synthetic rubber. 
     
     
         11 . The system of  claim 1 , wherein the protective polymer coating is applied to all sides of each expanded polymer unit. 
     
     
         12 . The system of  claim 1 , wherein an adhesive used to join adjacent expanded polymer units comprises an acrylic polymer adhesive. 
     
     
         13 . The system of  claim 1 , wherein each expanded polymer unit is configured to be joined to another unit at any rotational orientation selected from 0 degrees, 90 degrees, 180 degrees, or 270 degrees. 
     
     
         14 . The system of  claim 1 , wherein the lateral interlocking features are configured to maintain alignment of adjacent planar top surfaces in both horizontal and vertical planes. 
     
     
         15 . The system of  claim 1 , wherein each expanded polymer unit is configured to accommodate the insertion of a drainage system. 
     
     
         16 . The system of  claim 1 , wherein the protective polymer coating undergoes a chemical reaction and comprises an elastomeric material having a hardness in of range of Shore D hardness of between 50 to 70. 
     
     
         17 . The system of  claim 1 , wherein each expanded polymer unit further comprises a gap in the protective polymer coating adjacent each lateral edge to facilitate seamless joining of adjacent units. 
     
     
         18 . The system of  claim 1 , wherein the system further comprises a kit including pre-cut overlays templated to an arrangement of the expanded polymer units. 
     
     
         19 . A process for forming a base for architectural, landscape, or recreational feature installations, the process comprising:
 manufacturing a stepped transition surface on a plurality of expanded polymer units using a single high-speed pass of a computer numerical control (CNC) machine;   providing the plurality of expanded polymer units, each expanded polymer unit comprising:   a polymer base body having a planar top surface;   a plurality of lateral edges;   wherein the stepped transition surface is adjacent each lateral edge, the stepped transition surface comprising a series of horizontal load-supporting steps perpendicular to a gravity vector;   lateral interlocking features disposed on the plurality of lateral edges, the lateral interlocking features including complementary male and female profiles configured to engage corresponding male and female profiles of another expanded polymer unit;   vertical interlocking profiles configured to engage corresponding vertical interlocking profiles of another expanded polymer unit;   a protective polymer coating applied to the planar top surface and to the stepped transition surface, the protective polymer coating comprising an elastomeric material configured to bond to the stepped transition surface;   arranging the plurality of expanded polymer units such that the lateral interlocking features of adjacent units engage to align adjacent planar top surfaces seamlessly;   rotating at least one of the plurality of expanded polymer units in 90-degree increments relative to adjacent units to achieve a desired configuration;   stacking at least one expanded polymer unit on another expanded polymer unit by engaging the vertical interlocking profiles to form a vertical interlocked assembly;   applying an adhesive to the lateral edges of adjacent expanded polymer units to bond the adjacent expanded polymer together, thereby forming a continuous structural foundation;   filling any gaps in the protective polymer coating at the lateral edges with additional protective polymer coating to create a seamless surface transition; and   modifying at least one expanded polymer unit by cutting or machining to accommodate insertion of at least one of plumbing, electrical components, structural elements, or decorative elements without altering the lateral interlocking features.   
     
     
         20 . An expanded polymer unit for forming a base for architectural, landscape, or recreational feature installations, the expanded polymer unit comprising:
 a polymer base body having a planar top surface;   a plurality of lateral edges;   a stepped transition surface adjacent each lateral edge, the stepped transition surface comprising a series of horizontal load-supporting steps perpendicular to a gravity vector;   lateral interlocking features disposed on the plurality of lateral edges, the lateral interlocking features including complementary male and female profiles configured to engage corresponding male and female profiles of another expanded polymer unit to align adjacent planar top surfaces seamlessly;   vertical interlocking profiles configured to engage corresponding vertical interlocking profiles of another expanded polymer unit to support stacking of expanded polymer units in a vertical interlocked assembly;   a protective polymer coating applied to the planar top surface and to the stepped transition surface, the protective polymer coating comprising an elastomeric material configured to bond to the stepped transition surface;   wherein the lateral interlocking features enable rotational orientation of the expanded polymer unit in 90-degree increments relative to adjacent units to form horizontal interlocked assemblies without redesign of polymer base bodies;   wherein the engaged lateral interlocking features maintain alignment in both horizontal and vertical planes to form a congruent, continuous structural foundation;   wherein the expanded polymer unit is field-modifiable by cutting or machining to accommodate insertion of at least one of plumbing, electrical components, structural elements, or decorative elements without altering the lateral interlocking features.