Cradle with >180° Concavity for Pressurized Hose Maneuvering

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Solution Overview

Problem

Firefighting hoses become difficult to maneuver due to increased stiffness and weight under pressure, especially in long distances, requiring significant effort and often necessitating multiple personnel, and existing assistance devices are complex to operate.

Innovation Solution

A pipe maneuvering device with a frame and cradle system featuring a circular concavity extending beyond 180°, removable wheels, and a cradle design that secures the hose without additional clamping, allowing easy deployment and adjustment for multiple hoses, and optionally motorized operation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a pipe is pressurized to function properly, then it can deliver water effectively, but it becomes much more rigid and difficult to maneuver

Engineering Contradiction:
Improvewater delivery effectivenessVSAvoidmaneuverability
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The patent introduces a specialized cradle as an intermediary device between the pressurized hose and the ground/terrain. This cradle with circular concavity supports the hose's weight and allows it to be moved along the ground without requiring direct manual handling, thus maintaining maneuverability while the hose remains pressurized and functional

Inventive Principle:
Principle #24Intermediary (Mediator)

2Productivity

If the hose diameter is increased to cover long distances in oil or chemical sectors, then the water delivery capacity is improved, but the weight and friction forces increase significantly

Engineering Contradiction:
Improvewater delivery capacityVSAvoidhose weight
Core Design Contradiction:
ProductivityVSWeight of moving object

Solution Approach 1:

The cradle device acts as a support structure that counterbalances the weight of large-diameter hoses. By providing ground-level support through its circular concavity design, it eliminates the need for personnel to lift or bear the full weight of heavy hoses, enabling the use of larger diameter hoses for high-capacity water delivery over long distances

Inventive Principle:
Principle #8Anti-weight (Counterweight)

3Reliability

If existing assistance devices with clamping means are used, then the pipe can be secured, but the device becomes complex to implement and not quick to operate

Engineering Contradiction:
Improvepipe securingVSAvoidclamping mechanism complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent extracts the essential function of securing the hose from complex clamping mechanisms. The circular concavity of the cradle naturally holds and secures the hose through its geometric shape alone, eliminating the need for additional clamping means while maintaining reliability and simplifying the device structure for quick operation

Inventive Principle:
Principle #2Taking out (Extraction)

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

Facilitates easy maneuverability and reduces the effort required to handle pressurized hoses, enabling single or multiple hoses to be managed efficiently, even in challenging terrains, with quick setup and minimal user complexity.

Implementation Method 1

the efforts to be made are significant, requiring either serious efforts from the servant, sometimes beyond his limits, or several servants

Methodology Applied
Scientific EffectFriction: Friction

Data Source

PatentEP3993881B1Device for assisting the manoeuvres of at least one pipe
Publication Date: 2026.04.01 BOUKHILI ABDELBAST
  • EP3993881B1 patent drawingFigure 1
  • EP3993881B1 patent drawingFigure 2~3a
  • EP3993881B1 patent drawingFigure 3b~3c

AI summary

The invention relates to a device for assisting the manoeuvres of a pipe, comprising a frame (2) having at least one cradle (20) which has an inner shape with a circular concavity (21), and displacement means (3), characterized in that the concavity (21) of the cradle extends along a circular of an angle beyond 180°.