Magnetic Fastener Set Tool Assembly for Safer Accurate Driving

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Solution Overview

Problem

Conventional methods for setting and driving fasteners require skill and experience, can lead to improper fastening, reduced structural integrity, and pose safety risks due to direct handling of tools.

Innovation Solution

A modular set tool assembly with a handle member and fastener retention members that utilize magnetic retention and mechanical alignment to securely hold fasteners, allowing for safe and precise driving into a workpiece without direct user contact.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If conventional methods are used to set and drive fasteners, then the fastening process can be completed, but the user is exposed to safety risks and may lack the necessary skill to achieve proper results

Engineering Contradiction:

Improvefastening qualityVSAvoidsafety risk

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The patent introduces a set tool assembly as an intermediary device between the user and the fastener. The tool includes a retention member that holds the fastener and a striking member that delivers controlled impact forces. This intermediary system eliminates direct exposure of the user's hand to impact tools while ensuring consistent, proper setting of the fastener through controlled force application.

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The set tool assembly is divided into distinct functional components: a retention member for holding the fastener, a striking member for delivering impact forces, and a coupling mechanism for connecting them. This segmentation allows each component to be optimized for its specific function - the retention member protects the user's hand while the striking member provides controlled force delivery.

Inventive Principle:

Principle #1Segmentation

2Ease of operation

If conventional manual handling of fasteners is used, then the process is simple, but the fastening accuracy and structural integrity are compromised

Engineering Contradiction:

Improveoperational simplicityVSAvoidfastening accuracy

Core Design Contradiction:

Ease of operationVSManufacturing precision

Solution Approach 1:

The retention member is designed to automatically hold and position the fastener in the correct orientation through its structural features, such as a recess that cradles the fastener head. The fastener self-aligns within the retention member, eliminating the need for manual positioning by the user while ensuring accurate placement for driving.

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The fastener is pre-positioned and secured in the retention member before the striking action is applied. The retention member maintains the fastener in the correct position and orientation in advance of the driving operation, ensuring accuracy is achieved before the impact force is delivered.

Inventive Principle:

Principle #10Preliminary action

3Device complexity

If the fastener is held manually during setting, then the tool structure can be simple, but the user's hand is exposed to injury from impact tools

Engineering Contradiction:

Improvetool structureVSAvoidhand injury risk

Core Design Contradiction:

Device complexityVSObject-affected harmful factors

Solution Approach 1:

The retention member serves as an intermediary that replaces the user's hand in holding the fastener. It provides a protected interface between the fastener and the striking member, allowing impact forces to be applied to the fastener through the tool structure rather than directly to the user's hand, thereby eliminating injury risk.

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The retention member performs multiple functions: it holds the fastener securely, positions it in the correct orientation, protects the user's hand from impact forces, and provides a coupling interface for the striking member. This multi-functionality achieves safety without significantly increasing overall tool complexity.

Inventive Principle:

Principle #6Universality (Multi-functionality)

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

Enhances safety by minimizing bodily injury risk and improves fastening accuracy through magnetic retention and alignment, enabling efficient and secure fastener application.

Implementation Method 1

The handle member may include a permanent magnet at least partially within the coupling protrusion and configured to magnetically retain the fastener within the fastener retention member

Methodology Applied

Scientific EffectMagnetic retention: Magnetism

Data Source

PatentUS12479078B2Set tool assembly for driving a fastener into a workpiece

Publication Date: 2025.11.25 CRAVEN JOSEPH POWELL

AI summary

A set tool may comprise a handle member and a fastener retention member modularly coupled with the handle member. A permanent magnet may be positioned within a portion of the handle member and may be used to secure a ferromagnetic fastener within a fastener retention recess formed within the fastener retention member, when the fastener retention member is engaged with the handle member.