Pneumatic Tool Quick-Change Kit for Push-Pull Conversion

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Solution Overview

Problem

Converting a pneumatic percussive tool from a pushing force to a pulling force is complex and time-consuming, and changing pulling tools during a project is inefficient.

Innovation Solution

A kit that includes a removable end cap, a quick change chuck with steel balls, and a pull plug to selectively attach to the tool, allowing for easy conversion and quick change of attachments to switch between pushing and pulling forces.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a complex kit is used to convert a pneumatic percussive tool from pushing to pulling force, then the conversion capability is achieved, but the conversion process becomes time-consuming and complex

Engineering Contradiction:

Improveconversion capabilityVSAvoidconversion time

Core Design Contradiction:

Adaptability or versatilityVSLoss of time

Solution Approach 1:

The conversion kit is divided into separate modular components: a removable end cap, a quick change chuck, and a pull plug. Each component can be independently attached or detached from the tool body, allowing rapid conversion between pushing and pulling modes without complex assembly procedures

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The end cap is designed to be selectively removable and reattachable, transforming the tool's function dynamically. The quick change chuck enables rapid switching between different pulling tool bits, making the system adaptable and flexible rather than fixed

Inventive Principle:

Principle #15Dynamics

2Reliability

If traditional friction-fit components are used for attaching tool bits, then the attachment is secure, but changing tools during a project becomes difficult and inefficient

Engineering Contradiction:

Improveattachment securityVSAvoidtool changing efficiency

Core Design Contradiction:

ReliabilityVSProductivity

Solution Approach 1:

The quick change chuck acts as an intermediary component between the tool body and the pull plug/tool bits. It provides a standardized interface with steel balls that enable rapid tool bit changes while maintaining secure attachment during use, resolving the conflict between security and efficiency

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The traditional friction-fit mechanical attachment system is replaced with a ball-detent quick change mechanism. The steel balls in the quick change chuck engage with corresponding features on tool bits, providing secure attachment that can be rapidly engaged and disengaged without complex mechanical adjustments

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Data Source

PatentUS11883940B2Pneumatic percussive tool with attachments and method of use thereof

Publication Date: 2024.01.30 PANKS JAMES KEVIN

AI summary

The present disclosure generally relates to quick change attachments for a pneumatic percussive tool. The attachments convert a pneumatic percussive tool, such as an air impact tool with proximal attachment, which has a “pushing” force, into a pneumatic percussive tool having a “pulling” force. Once attached to the pneumatic percussive tool, the attachments also provide a quick change feature for allowing “pulling” tools to be simply and easily removed and replaced.