Conical Wedge Fastening for Pipe Wall Mounts

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Solution Overview

Problem

Existing systems for fixing bodies like pipes and ducts to walls lack reliability and safety, especially under significant tensile stresses, due to the transmission of forces through threading, which can lead to instability and failure.

Innovation Solution

A fixing system comprising a U-shaped rail with conical socket connections between a cylindrical rod and a plate, allowing for strong wedging and secure attachment of pipes or ducts to walls, ceilings, or floors, using a conical fitting with a through orifice and a truncated cone tip, along with a collar or other linking means for enhanced tensile strength.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If threading is used to transmit forces from the plate to the rail, then the assembly is simple to manufacture, but the reliability and safety under tensile stresses deteriorates

Engineering Contradiction:
Improveease of manufactureVSAvoidreliability
Core Design Contradiction:
Ease of manufactureVSReliability

Solution Approach 1:

The patent replaces the threading mechanical system with a conical wedging system. The rod has a conical end that fits into a conical recess in the rail, creating a friction-based mechanical connection that eliminates threads entirely. This substitution maintains ease of manufacture while dramatically improving reliability under tensile loads.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent uses conical (curved) surfaces instead of cylindrical threaded surfaces. The conical end of the rod and the corresponding conical recess create a wedging action through their angled surfaces, providing superior load distribution and connection strength compared to linear threading.

Inventive Principle:
Principle #14Spheroidality (Curvature)

2Ease of operation

If threading is used to connect the rod to the plate, then the connection is easy to assemble, but the tensile strength and safety deteriorates

Engineering Contradiction:
Improveease of assemblyVSAvoidtensile strength
Core Design Contradiction:
Ease of operationVSStrength

Solution Approach 1:

The patent replaces the threading mechanical system with a conical wedging system. The rod has a conical end that fits into a conical recess in the rail, creating a friction-based mechanical connection that eliminates threads entirely. This substitution maintains ease of manufacture while dramatically improving reliability under tensile loads.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

3Device complexity

If conventional fixing systems with threading are used, then the device complexity is low, but the safety and reliability under significant forces deteriorates

Engineering Contradiction:
Improvedevice complexityVSAvoidsafety
Core Design Contradiction:
Device complexityVSReliability

Solution Approach 1:

The patent replaces the threading mechanical system with a conical wedging system. The rod has a conical end that fits into a conical recess in the rail, creating a friction-based mechanical connection that eliminates threads entirely. This substitution maintains ease of manufacture while dramatically improving reliability under tensile loads.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

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 system significantly increases tensile strength, reduces material usage and costs, and facilitates easy assembly and adjustment, with the cylindrical and conical shapes of revolution ensuring robust and reliable attachment while minimizing the risk of rupture at the threaded end.

Implementation Method 1

The means 43 for fixing a first end 44 of the rod to the plate so that it is substantially perpendicular to the plane of this plate, consist of a conical socket 50

Methodology Applied
Scientific EffectWedge: Wedge

Data Source

PatentEP2775153B1System for attaching a body to a wall
Publication Date: 2016.12.28 ABENSOUR SAMY
  • EP2775153B1 patent drawing

AI summary

The system has a plate (41), a cylindrical rod (42) and a securing unit (43) for securing an end (44) of the rod to the plate. The plate has a width that is less than a width of a longitudinal opening (24), a length higher than the width and lower than a distance internally separating two U-shaped branches. The plate has a thickness that is lower than a minimal distance. The securing unit fixes the end of the rod to the plate such that the rod is approximately perpendicular to a plane of the plate constituted by a conical socket (50). The plate has an approximately parallelepipedic form.