Glass Edge Protection Attachment for Balustrades

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Solution Overview

Problem

All-glass railings and French balconies require edge protection for safety without disturbing their transparent appearance, as traditional metal handrails are visually intrusive and can detach due to differing coefficients of expansion.

Innovation Solution

A transparent edge protection attachment made of glass, laminated onto the top edge of the glass construction, which forms a permanent unit with the laminated glass pane, eliminating the need for metal handrails and providing a secure, non-intrusive safety solution.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a metal handrail is added to the glass construction, then safety protection is improved, but the transparent appearance is deteriorated and detachment risk increases

Engineering Contradiction:
Improvesafety protectionVSAvoidtransparent appearance
Core Design Contradiction:
ReliabilityVSShape

Solution Approach 1:

The patent applies homogeneity by using a glass edge protection attachment made of the same material (glass) as the glass construction it protects. This eliminates the visual contrast and detachment issues that arise from combining different materials like metal handrails with glass panels, while still providing the necessary safety function.

Inventive Principle:
Principle #33Homogeneity

Solution Approach 2:

The patent extracts the harmful metal handrail element from the glass construction and replaces it with a glass-based edge protection attachment. This removal of the incompatible material resolves both the aesthetic problem of visual intrusion and the technical problem of detachment due to different thermal expansion coefficients.

Inventive Principle:
Principle #2Taking out (Extraction)

2Reliability

If a metal handrail is added to the glass construction, then safety protection is improved, but detachment due to different coefficients of expansion occurs

Engineering Contradiction:
Improvesafety protectionVSAvoidattachment stability
Core Design Contradiction:
ReliabilityVSStability of the object's composition

Solution Approach 1:

By using glass material for the edge protection attachment rather than metal, the patent ensures homogeneous material composition with the glass construction. This eliminates the differential thermal expansion and contraction that causes metal handrails to detach from glass panels over time, thereby improving long-term attachment stability.

Inventive Principle:
Principle #33Homogeneity

3Shape

If a transparent edge protection attachment is laminated onto the glass edge, then visual appearance is improved, but structural strength may be reduced

Engineering Contradiction:
Improvetransparent appearanceVSAvoidstructural strength
Core Design Contradiction:
ShapeVSStrength

Solution Approach 1:

The patent employs composite materials by laminating a glass edge protection attachment to the glass construction. This layered composite structure combines the transparency of the edge protection with the structural strength of the glass panel, achieving both aesthetic and structural requirements simultaneously.

Inventive Principle:
Principle #40Composite materials

Solution Approach 2:

The patent merges the edge protection function with the glass construction by laminating the glass edge protection attachment directly to the glass panel. This integration ensures that the edge protection becomes part of the overall structural system, maintaining strength while providing the desired transparent appearance.

Inventive Principle:
Principle #5Merging (Combining)

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 solution ensures the safety of all-glass railings and French balconies by preventing impacts and fractures while maintaining transparency, with the added benefit of decorative lighting effects through integrated LED lighting.

Implementation Method 1

A composite element designed as a glass laminate is disclosed, which consists of at least two glass panes which are connected by an adhesive intermediate layer made of plastic

Methodology Applied
Scientific EffectAdhesive bonding: Adhesive

Implementation Method 2

an edge protection attachment (20) which is laminated onto the top edge (19)

Methodology Applied
Scientific EffectLamination: Lamination

Data Source

PatentEP3640409B1Balustrade with edge protection means
Publication Date: 2022.04.20 BANGRATZ RENE
  • EP3640409B1 patent drawingFigure 1
  • EP3640409B1 patent drawingFigure 2
  • EP3640409B1 patent drawingFigure 3

AI summary

An edge protection attachment (20) is proposed for protecting a free glass edge in safety-relevant glass components (10), wherein the glass component (10) has at least one glass pane (12) and the edge protection attachment (20) is made of glass and is arranged on at least one free glass edge (19) of the glass component (10).