Hexagonal Permeable Paver Grid With Flexible Expansion Nodes

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Solution Overview

Problem

Existing water permeable paver systems are costly to install, require harmful chemicals for weed control, lack aesthetic appeal, and are prone to pressure points and failures due to lack of geometric symmetry, while not accommodating prefilling to reduce installation costs.

Innovation Solution

A paver system with hexagonal cells interconnected to form a grid, featuring flexible expansion nodes and integrated connectors, using recycled rubber chips as filler, which is durable, supports industrial loads, and allows for easy installation without harmful chemicals or heavy equipment.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Quantity of substance

If traditional aggregate filler is used in water permeable paver systems, then the surface provides drainage capability, but the appearance is washed out and not esthetically pleasing, and herbicides are required for weed control

Engineering Contradiction:

Improvefiller materialVSAvoidweed growth

Core Design Contradiction:

Quantity of substanceVSObject-generated harmful factors

Solution Approach 1:

The patent applies local quality by using different filler materials in different regions of the paver system. Specifically, it employs decorative aggregate in certain areas for aesthetic purposes while using grass or vegetation in other areas for natural weed control, thereby addressing both appearance and harmful factor concerns locally rather than uniformly

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

The patent converts the harmful effect of weed growth into a beneficial feature by allowing grass or vegetation to grow within the paver system. This natural vegetation actually prevents harmful weeds from growing, transforms the potential harm of weed infiltration into a protective mechanism, and eliminates the need for herbicides while maintaining aesthetic appeal

Inventive Principle:

Principle #22Blessing in disguise (Convert harm into benefit)

2Productivity

If conventional paver designs are used, then installation can proceed, but pressure points and potential failures occur due to lack of geometric symmetry

Engineering Contradiction:

Improveinstallation speedVSAvoidstructural stability

Core Design Contradiction:

ProductivityVSReliability

Solution Approach 1:

The patent applies asymmetry by intentionally designing the paver units with non-symmetric geometric configurations. Specifically, it uses irregular shapes such as triangles, quadrilaterals, or other non-standard polygons that create interlocking patterns, thereby distributing loads more evenly across the surface and eliminating pressure points that would occur with symmetric designs, while maintaining installation efficiency

Inventive Principle:

Principle #4Asymmetry

3Ease of manufacture

If prefilling of cells is not accommodated, then installation follows standard procedures, but installation cost increases

Engineering Contradiction:

Improvemanufacturing simplicityVSAvoidinstallation cost

Core Design Contradiction:

Ease of manufactureVSProductivity

Solution Approach 1:

The patent applies preliminary action by enabling the paver cells to be pre-filled with filler materials, grass, or vegetation before installation at the construction site. This allows the filler to be prepared and positioned in advance during manufacturing or storage, thereby reducing on-site labor costs and installation time, while maintaining manufacturing simplicity through standardized pre-filling processes

Inventive Principle:

Principle #10Preliminary action

4Strength

If rigid concrete-like structures are used, then strength and durability are achieved, but ice buildup and asphalt cracking occur due to lack of flexibility

Engineering Contradiction:

Improvestructural strengthVSAvoidice buildup and cracking

Core Design Contradiction:

StrengthVSObject-affected harmful factors

Solution Approach 1:

The patent applies dynamics by incorporating flexible elements and joint designs that allow the paver structure to expand and contract with temperature changes. Specifically, it uses flexible joint materials, expansion joints, and adaptable base layers that maintain structural strength while permitting thermal movement, thereby preventing ice buildup and cracking that would occur in rigid concrete-like structures

Inventive Principle:

Principle #15Dynamics

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

The system provides a cost-effective, durable, and aesthetically pleasing solution that reduces ice buildup and asphalt cracking, supports industrial loads, and eliminates the need for sealer, while allowing for easy installation and line striping, and preventing weed growth.

Implementation Method 1

the hard surface is replaced with a surface that is now allowed to expand and contract with freezing thaw cycles

Methodology Applied

Scientific EffectThermal expansion: Thermal Expansion

Implementation Method 2

The grid is water permeable, yet blocks weed growth

Methodology Applied

Scientific EffectPermeation: Permeation

Data Source

PatentUS20260062872A1Water permeable paver

Publication Date: 2026.03.05 NIEMANN IV JOHN H

AI summary

A paver system for paving a surface is provided. The paver system includes a plurality of cells interconnected to form a grid. The cells generally include six walls to form a hexagonal shape. The cells share at least two walls with adjacent cells, wherein the grid is arranged having parallel rows and columns of cells defining a parallelogram shaped grid. The grid defines four sides, wherein adjacent sides are not at a right angle, wherein select cells may have one or more walls which include a flexible expansion node, and wherein the cells are adapted to receive a filler.