Pipe Threading Drive Ring Mechanism for Secure Die Head Retention

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Solution Overview

Problem

Conventional power drive tools fail to securely retain die heads axially during use, leading to unwanted separation and require users to apply axial force directly to the rotating die head for thread initiation, which can result in improper thread formation.

Innovation Solution

A power drive tool with a drive ring mechanism that actively engages and disengages the die head, featuring threading and release pawls that extend radially inward, and includes lights for improved visibility, along with a motor orientation parallel to the pipe axis for enhanced efficiency and reduced length.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If the user applies axial force directly onto the rotating die head to initiate thread cutting, then thread formation can begin, but this results in improper thread formation and user difficulty

Engineering Contradiction:

Improvethread initiation capabilityVSAvoidthread formation quality

Core Design Contradiction:

Ease of operationVSManufacturing precision

Solution Approach 1:

The die head retention mechanism serves as an intermediary that receives and transmits the user's axial starting force to the die head. This allows the user to apply force to a stable, non-rotating component rather than directly to the rotating die head, ensuring proper force application and accurate thread formation.

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The retention mechanism pre-positions and secures the die head in the correct axial position before threading begins. This preliminary securing ensures that when the user applies axial force, the die head is already properly positioned to cut accurate threads from the start.

Inventive Principle:

Principle #10Preliminary action

2Device complexity

If conventional power drive tools are designed without integrated lighting, then device complexity is reduced, but visibility during threading operations is insufficient

Engineering Contradiction:

Improvetool structure simplicityVSAvoidwork area visibility

Core Design Contradiction:

Device complexityVSIllumination intensity

Solution Approach 1:

The lighting system is merged with the tool body structure, integrating the light source and housing into the existing tool design. This combination provides necessary illumination while minimizing additional complexity by utilizing the tool's existing structural elements to support the lighting components.

Inventive Principle:

Principle #5Merging (Combining)

Data Source

PatentUS12589460B2Pipe threading mechanisms and systems

Publication Date: 2026.03.31 RIDGE TOOL CO

AI summary

Power drive tools are described. The tools include one or more threading pawls, one or more release pawls, and a drive ring selectively positionable relative to the tool and engaged with the pawls to selectively extend or retract the pawls. Also described are tools that include one or more lights to illuminate a workpiece. Also described are tools having distally located shoulder regions at which force may readily be applied. In addition, gear train assemblies for use in the power drive tools are described.