Modular Sliding Gate Assembly for Offshore Safety and Transport

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Solution Overview

Problem

Traditional offshore gates are unsuitable due to extreme weather conditions, corrosion, frequent unintended operation, and safety hazards, and their logistics of transportation are complicated and costly.

Innovation Solution

A modular sliding gate assembly comprising sliding gates and railings, with components that can be assembled and disassembled for easy transportation, featuring low-friction interfaces and a deadbolt locking mechanism for safety and ease of use.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If traditional hinged gates are used in offshore settings, then the gate can be simple to actuate with one hand, but the gate poses safety hazards by swinging back towards the closed position and hitting users

Engineering Contradiction:
Improveease of gate actuationVSAvoidsafety hazard from gate swinging back
Core Design Contradiction:
Ease of operationVSObject-affected harmful factors

Solution Approach 1:

The patent inverts the traditional hinged gate mechanism by using a sliding gate that moves horizontally along rails instead of rotating on hinges. This inversion eliminates the arc-shaped swing motion that causes safety hazards, while maintaining ease of operation through a simple linear sliding action that can be controlled with one hand.

Inventive Principle:
Principle #13The other way round (Inversion)

Solution Approach 2:

The patent introduces an intermediary mechanism - a sliding block or carriage that moves along horizontal rails - to replace the direct hinged connection. This intermediary allows the gate to open and close smoothly without swinging back, eliminating the harmful effect while preserving operational simplicity.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Ease of manufacture

If gates are made and supplied in sections as railing panels and gate panels, then assembly is simple for the fitter, but transportation is complicated, costly and environmentally unfriendly

Engineering Contradiction:
Improvesimplicity of assemblyVSAvoidtransportation time and cost
Core Design Contradiction:
Ease of manufactureVSLoss of time

Solution Approach 1:

The patent segments the gate into modular components - horizontal rails, vertical posts, and sliding gate panels - that can be easily assembled and disassembled. This segmentation allows the gate to be broken down into compact sections for efficient transportation, reducing logistics costs and environmental impact while maintaining assembly simplicity through standardized connection mechanisms.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent employs a nesting arrangement where the sliding gate panels can be positioned within or alongside the rail structures, allowing compact packaging during transportation. The modular design enables components to be nested or stacked efficiently, reducing transportation volume and cost while facilitating quick assembly at the destination.

Inventive Principle:
Principle #7Nested doll (Nesting)

3Strength

If metallic mechanisms are used in gates, then the gate structure is strong, but the mechanisms are vulnerable to corrosion due to high salt content

Engineering Contradiction:
Improvestructural strength of gateVSAvoidresistance to corrosion
Core Design Contradiction:
StrengthVSReliability

Solution Approach 1:

The patent employs composite construction by combining corrosion-resistant materials (such as stainless steel, aluminum, or coated metals) with the structural metal components. This composite approach maintains the necessary structural strength while providing protection against corrosion from high salt content environments, thereby improving reliability.

Inventive Principle:
Principle #40Composite materials

Solution Approach 2:

The patent creates a protective environment for metallic mechanisms by applying corrosion-resistant coatings or using materials that form protective oxide layers, effectively creating an inert barrier between the metal and the corrosive salt air, thus preserving both strength and reliability.

Inventive Principle:
Principle #39Inert atmosphere (Inert environment)

4Ease of operation

If spring-loaded hinged gates are used, then the gate allows self-closing when the user reaches the platform, but the gate may injure users or knock them off-balance

Engineering Contradiction:
Improveautomatic self-closing functionVSAvoidinjury risk from sudden gate closure
Core Design Contradiction:
Ease of operationVSObject-affected harmful factors

Solution Approach 1:

The patent inverts the spring-loaded hinged mechanism by using a sliding gate system where the gate moves horizontally along rails. The self-closing function is achieved through a different mechanism - such as a controlled sliding track or balanced weight system - that eliminates the sudden swinging motion, providing automatic closure without the injury risk associated with spring-loaded hinges.

Inventive Principle:
Principle #13The other way round (Inversion)

Data Source

PatentEP4707524A1Modular sliding gate
Publication Date: 2026.03.11 GATEMASTER LTD
  • EP4707524A1 patent drawingFigure 1
  • EP4707524A1 patent drawingFigure 2
  • EP4707524A1 patent drawingFigure 3

AI summary

A sliding gate assembly is provided, comprising at least one sliding gate and at least one set of railings into which the sliding gate can be retracted. The assembly may be modular in form and finds particular use in offshore settings.