Directional Hook-and-Loop Hanging for Damage-Free Wall Removal

Resolve Bottlenecks,
Find Innovative Solutions
Generate Solutions

Solution Overview

Problem

Existing wall hanging systems often damage walls upon removal, particularly when dealing with rigid objects like framed pictures, and require precise alignment and placement to ensure level and desired height, with a need for more efficient and damage-free solutions for both flexible and rigid items.

Innovation Solution

A releasable hanging system utilizing a combination of loop and hook fastener components, where a significant majority of male touch fastener elements are oriented to overhang a common direction, allowing for secure hanging and easy adjustment without damaging surfaces or objects, and featuring a low engaged thickness and high shear resistance for secure attachment and easy release.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If adhesive hanging systems are used to hang rigid objects on walls, then the objects can be hung securely, but the walls are damaged upon removal

Engineering Contradiction:
Improvesecure attachmentVSAvoidwall damage
Core Design Contradiction:
ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The hanging system is divided into two separate components: a hook component that attaches to the wall and a loop component that attaches to the object. This segmentation allows each component to be optimized for its specific function - the hook for wall attachment and the loop for object attachment - while enabling damage-free removal by simply separating the two components rather than pulling adhesive off the wall.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The loop fastener component acts as an intermediary between the wall and the rigid object. Instead of directly adhering the object to the wall with damaging adhesive, the loop component provides a mechanical coupling mechanism that secures the object to the hook without requiring wall damage. The interlocking hook-and-loop mechanism serves as a mediator that transfers the load from the object to the wall through friction and mechanical engagement rather than chemical adhesion.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Manufacturing precision

If traditional hanging methods are used to ensure precise alignment and level placement, then proper orientation is achieved, but the process becomes complex and time-consuming

Engineering Contradiction:
Improvealignment precisionVSAvoidhanging system complexity
Core Design Contradiction:
Manufacturing precisionVSDevice complexity

Solution Approach 1:

Alignment marks or indicators are pre-marked on the hook component or the wall surface during manufacturing. These preliminary markings guide the user on where to position the hook and loop components for optimal alignment, eliminating the need for complex measurement and adjustment processes during installation. The preliminary action of marking the correct position beforehand simplifies the hanging process while ensuring proper alignment.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The hook and loop components are designed with self-aligning features such as asymmetric shapes, directional indicators, or gravity-assisted positioning that automatically guide the components into the correct orientation during installation. The components essentially service their own alignment needs through their geometric design, reducing the user's burden and the overall complexity of the hanging system.

Inventive Principle:
Principle #25Self-service

3Reliability

If rigid objects are adhesively attached to walls, then secure hanging is achieved, but removal becomes difficult and damaging

Engineering Contradiction:
Improvehanging securityVSAvoidremoval ease
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The hanging system transitions from a static adhesive bond to a dynamic mechanical coupling system. The hook and loop components can dynamically adjust to slight misalignments and movements while maintaining secure attachment through their interlocking mechanism. More importantly, the system allows for easy dynamic removal by simply pulling the loop component away from the hook, providing both security during use and ease of removal when needed.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The loop component is designed to be easily discarded or recovered from the hook component without damage to either the component or the wall. The modular design allows the loop (attached to the object) to be separated from the hook (attached to the wall) by simple mechanical action, enabling the user to recover reusable components while discarding or relocating the object as needed, without the permanent commitment and damage associated with adhesive bonding.

Inventive Principle:
Principle #34Discarding and recovering

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

Enables secure, adjustable, and damage-free hanging of objects on vertical surfaces, allowing for easy orientation adjustment and removal without damaging the surface or object, with a low profile and high shear resistance for reliable attachment and easy release.

Implementation Method 1

a releasable hanging system including a loop fastener component and a hook fastener component... a significant majority of the male touch fastener elements are oriented to overhang the base in a single, common direction... engageable by the male touch fastener elements

Methodology Applied
Scientific EffectMechanical interlocking: Mechanical Fastener

Implementation Method 2

The loop fastener component includes a flexible patch carrying a field of engageable fibers exposed on a front side of the patch and an adhesive on a back side of the patch

Methodology Applied
Scientific EffectAdhesion: Adhesive

Data Source

PatentUS8851440B2Releasable hanging system
Publication Date: 2014.10.07 VELCRO IP HOLDINGS LLC
  • US8851440B2 patent drawing
  • US8851440B2 patent drawing
  • US8851440B2 patent drawing

AI summary

A releasable hanging system having a loop fastener component and a hook fastener component. The loop fastener component includes a flexible patch carrying a field of engageable fibers exposed on a front side of the patch and an adhesive on a back side of the patch. The hook fastener component includes a resin base carrying an array of male touch fastener elements. A significant majority of the male touch fastener elements each extend from the base to a distal tip to overhang the base in a single, common direction. The fastening system can be used to hang an object on a vertical surface such that the male touch fastener elements of the significant majority bear the weight of the object in a downward direction, and such that the significant majority of the male touch fastener elements are oriented so as not to inhibit lifting of the object in an upward direction.