Interlocking Flooring System with Asymmetric Locking Strips
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Solution Overview
Problem
Existing interlocking floor systems face issues with moisture-related swelling and shrinkage, damage during installation and removal, and the need for specialized equipment due to complex edge profiles, which compromise the quality and ease of installation and maintenance.
Innovation Solution
The use of solid wood flooring strips with a basic high-speed moulding machine-produced tongue and groove profiles, combined with a flexible and resilient locking strip made from plastic or other materials, which allows for efficient interlocking without attachment to the substrate, providing a water-resistant finish and easy installation and removal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If wood strips are individually secured with nails or adhesive to the substrate, then the floor structure is strong and stable, but the installation is time-consuming and removal damages the wood strips
Solution Approach 1:
The flooring system is segmented into individual floating planks that interlock with each other through edge profiles, rather than being individually attached to the substrate. This allows rapid installation by simply connecting planks together, eliminating the time-consuming nailing or adhesive application process while maintaining structural integrity through the interlocking mechanism
Solution Approach 2:
An intermediary interlocking edge profile system is introduced between the planks and substrate. This profile includes a tongue that engages with a groove in adjacent planks, creating a mechanical connection that provides structural stability without requiring direct attachment to the substrate, enabling both strength and ease of installation
2Ease of operation
If complex edge profiles are used to enable interlocking without substrate attachment, then easy installation over concrete is achieved, but specialized machines with multiple angled cutters are required
Solution Approach 1:
The edge profile parameters are optimized to be producible by standard moulding machines. The tongue and groove dimensions, angles, and tolerances are specifically designed to be machinable with conventional single-axis cutters, transforming the previously complex profile into one that can be produced with ordinary equipment while still achieving the desired interlocking function
Solution Approach 2:
The edge profile design achieves multiple functions using a simple geometry that can be produced by universal, standard moulding machines. The profile simultaneously provides interlocking capability, moisture barrier function, and mechanical strength, all while being manufacturable with common equipment rather than requiring specialized multi-angled cutting machines
3Stability of the object's composition
If edges are left unfinished to allow moisture exchange, then the wood can gain or lose moisture naturally, but shrinkage and swelling cause gap enlargement or cupping
Solution Approach 1:
A thin film finish is applied to the edge surfaces that acts as a moisture barrier. This film allows the wood to maintain dimensional stability by preventing excessive moisture absorption or loss at the edges, while still permitting controlled moisture exchange. The finish protects against shrinkage and swelling that would otherwise cause gaps or cupping, maintaining both moisture balance and shape stability
4Manufacturing precision
If close-fitting machined edges are used for interlocking, then precise interlocking is achieved, but the edges are exposed to moisture changes causing shrinkage or swelling that compromises fit quality
Solution Approach 1:
The edges are pre-finished with a protective coating before installation. This preliminary action seals the wood pores and prevents moisture absorption that would cause swelling or shrinkage. By applying the finish in advance, the edges maintain their precise dimensions and fit quality throughout installation and service, preventing the compromise that would otherwise occur from moisture exposure
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
This solution creates a stable, water-resistant, and aesthetically appealing flooring system that can be easily installed and removed without damaging the wood, using standard equipment and maintaining its integrity over concrete surfaces, while allowing for reinstallation with minimal replacement of locking strips.
Implementation Method 1
a flexible and resilient locking strip made from plastic or other materials, which allows for efficient interlocking
Data Source
AI summary
Improved interlocking flooring system that allows for a solid wood floor to be fully finished on all surfaces to provide moisture protection and can be installed over a solid subfloor surface without need for attachment to the subfloor with nails, adhesives or other fastening methods. Adjacent interlocking strips are held securely in place by a plurality of novel asymmetric locking strips.