Construction Site Fence Cover for Tamper-Resistant Flanges

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Solution Overview

Problem

Palisade systems deteriorate under mechanical stress and are vulnerable to vandalism due to flange accessibility, leading to potential dismantling and reduced structural integrity.

Innovation Solution

A palisade system design featuring a cover that obstructs access to flanges from the public side, using tamper-proof flanges and additional panels to enhance structural cohesion and prevent unauthorized access, while maintaining modular compatibility.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If flanges are made accessible for connection between modules, then assembly and maintenance become easier, but the system becomes vulnerable to vandalism and unauthorized dismantling

Engineering Contradiction:
Improveease of assemblyVSAvoidresistance to vandalism
Core Design Contradiction:
Ease of operationVSReliability

Solution Approach 1:

A cover element is introduced as an intermediary component between the public side and the flange connection. This cover allows the flange to remain accessible for authorized assembly and maintenance operations while preventing unauthorized access and vandalism attempts.

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The connection system is segmented into multiple functional components: the flange for mechanical connection, the cover for security and access control, and the integrated assembly mechanism. This segmentation allows each component to fulfill its specific function while collectively resolving the contradiction between accessibility and security.

Inventive Principle:
Principle #1Segmentation

2Ease of manufacture

If flanges are exposed for connection purposes, then assembly operations are simplified, but mechanical strength and structural integrity are reduced

Engineering Contradiction:
Improveease of assemblyVSAvoidmechanical resistance
Core Design Contradiction:
Ease of manufactureVSStrength

Solution Approach 1:

The cover and flange are merged into a single integrated assembly unit. The cover is mechanically coupled to the flange such that they function together as one component, providing both the connection functionality of the flange and the protective/structural benefits of the cover, thereby simultaneously achieving ease of assembly and enhanced mechanical strength.

Inventive Principle:
Principle #5Merging (Combining)

3Ease of repair

If flanges are made accessible from the public side, then maintenance and repair become easier, but the system becomes more susceptible to tampering and damage

Engineering Contradiction:
Improveease of maintenanceVSAvoidvandalism risk
Core Design Contradiction:
Ease of repairVSObject-affected harmful factors

Solution Approach 1:

The cover serves as a controlled intermediary that mediates access to the flange. It allows authorized maintenance personnel to access the flange when needed while blocking unauthorized individuals from attempting tampering or damage, thus resolving the contradiction between ease of repair and vandalism risk.

Inventive Principle:
Principle #24Intermediary (Mediator)

Data Source

PatentEP4621167A1Construction site fence
Publication Date: 2025.09.24 ALTEMPO
  • EP4621167A1 patent drawingFigure 1a~1b
  • EP4621167A1 patent drawingFigure 2a~2b
  • EP4621167A1 patent drawingFigure 2c~3a

AI summary

Palisade system (0) comprising at least first and second palisade modules (1, 2, 2'), each module comprising: - a frame (3) having right (31, 31') and left (32, 32') uprights parallel to each other and upper and lower crosspieces (33, 34) parallel to each other; - a first panel (41) carried by the frame (3); the palisade system (0) comprising a first flange (B1) connecting said first and second palisade modules (1, 2, 2') together and keeping the right upright (31) of the first module (1) substantially parallel to the left upright (32') of the second module (2), at least one first cover (5) extends in front of a space (E) between the right upright (31) and the left upright (32') to prevent access to said first flange (B1) from a first side (Cx) of said palisade system (0).