Interlocking Panel Profiles for Low-Force Downward Uncoupling

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Solution Overview

Problem

Existing panel uncoupling methods, particularly those involving vertical extraction, are cumbersome and risk damaging the interacting profiles, and require substantial force, making it difficult to replace or reposition panels effectively.

Innovation Solution

The panels feature complementary profiles with angled interlocking surfaces and a downward angling movement for uncoupling, allowing for a smooth and gradual separation without high resistance, using a combination of angled grooves and tongues with optional malleable coatings to reduce friction.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If vertical extraction is used to uncouple panels, then the interlocking profiles can be separated, but substantial force is required and damage risk increases

Engineering Contradiction:

Improveease of uncouplingVSAvoidrisk of profile damage

Core Design Contradiction:

Ease of operationVSReliability

Solution Approach 1:

Instead of extracting the panel vertically upward to uncouple it, the invention inverts the uncoupling direction by applying a downward force. The pressing element presses the second panel downward against the first panel, causing the profiles to slide past each other in a downward direction. This inverted approach reduces the required force and eliminates damage risk associated with upward extraction.

Inventive Principle:

Principle #13The other way round (Inversion)

Solution Approach 2:

The invention changes the directional parameter of the uncoupling force from upward (extraction) to downward (pressing). By applying force in the opposite direction, the interlocking profiles are forced to disengage through downward sliding rather than upward pulling, which reduces friction and resistance during the uncoupling process.

Inventive Principle:

Principle #35Parameter changes

2Strength

If vertical insertion is used to couple panels, then a robust coupling is established, but uncoupling requires cumbersome reverse movement

Engineering Contradiction:

Improvecoupling strengthVSAvoidease of uncoupling

Core Design Contradiction:

StrengthVSEase of operation

Solution Approach 1:

The invention inverts the uncoupling operation by applying downward pressure instead of upward extraction. The pressing element forces the second panel downward, causing the profiles to slide past each other in the downward direction, which is the opposite of the coupling insertion direction. This makes uncoupling as easy as the coupling operation.

Inventive Principle:

Principle #13The other way round (Inversion)

Solution Approach 2:

The interlocking profiles are designed with inclined surfaces that automatically guide the sliding motion during both coupling and uncoupling. When downward force is applied, the profiles self-align and slide past each other along the inclined surfaces without requiring complex external mechanisms, making the uncoupling process simple and intuitive.

Inventive Principle:

Principle #25Self-service

Data Source

PatentEP4189191B1Panel and method of uncoupling two interconnected panels

Publication Date: 2026.03.04 I4F LICENSING NV

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AI summary

The present invention relates to a panel suitable as a floor, ceiling or wall panel, which panel is of a planar design having an upper side, a bottom side and side edges. Furthermore, the invention relates to a covering comprising a plurality of interconnected panels according to the invention. The invention also relates to a method of uncoupling two (or more) interconnected panels.