Housed Socket Extension Isolating Hand from Rotating Debris

Solution Overview

Problem

Conventional socket extensions connected to motorized power tools pose safety risks due to high-speed rotation, potential burns, abrasions, and repetitive strain injuries when handled by hand, as they often have debris on their surface and require direct hand contact to support the tool.

Innovation Solution

A housed socket extension with a high-strength tubular housing that allows the socket extension to rotate within, while the housing remains stationary, equipped with friction-reducing devices like bearings or bushings to prevent the housing from rotating and provide a safe grip for the user's hand, reducing operator injury and fatigue.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a conventional socket extension is used with a motorized power tool, then the tool can be connected and operated, but the user's hand is exposed to high-speed rotation causing burns, abrasions, lacerations and repetitive strain injuries

Engineering Contradiction:

Improveuser safetyVSAvoidburns, abrasions, lacerations, repetitive strain injuries

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The device is divided into two distinct functional segments: a stationary housing that the user holds and a rotating socket extension that performs the work. This segmentation isolates the user's hand from the rotating hazardous components while allowing the socket extension to rotate freely for its intended function.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

A stationary tubular housing acts as an intermediary between the user's hand and the rotating socket extension. This housing transmits the rotational force from the power tool to the socket extension while preventing the housing itself from rotating, thereby protecting the user's hand from direct contact with rotating debris and high-speed components.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Reliability

If the socket extension is enclosed within a housing to prevent rotation, then user safety is improved, but friction may increase affecting operation

Engineering Contradiction:

Improveuser safetyVSAvoidrotation smoothness

Core Design Contradiction:

ReliabilityVSEase of operation

Solution Approach 1:

Friction-reducing devices such as bearings or bushings are introduced as intermediary elements between the rotating socket extension and the stationary housing. These intermediaries minimize friction and wear while allowing smooth rotation, ensuring the socket extension can rotate freely without compromising user safety.

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The direct mechanical contact between the rotating socket extension and the stationary housing is replaced with a friction-reducing mechanism (bearings or bushings). This substitution reduces friction and wear, allowing smooth rotation while maintaining the protective housing structure.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

3Device complexity

If the housing rotates with the socket extension, then the connection is simpler, but the user cannot safely hold the housing during high-speed rotation

Engineering Contradiction:

Improveconnection simplicityVSAvoiduser safety

Core Design Contradiction:

Device complexityVSReliability

Solution Approach 1:

The device is divided into two distinct functional segments: a stationary housing that the user holds and a rotating socket extension that performs the work. This segmentation isolates the user's hand from the rotating hazardous components while allowing the socket extension to rotate freely for its intended function.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

A stationary tubular housing acts as an intermediary between the user's hand and the rotating socket extension. This housing transmits the rotational force from the power tool to the socket extension while preventing the housing itself from rotating, thereby protecting the user's hand from direct contact with rotating debris and high-speed components.

Inventive Principle:

Principle #24Intermediary (Mediator)

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 solution enables safe handling of high-speed socket extensions by isolating the user's hand from the rotating surface, reducing the risk of injuries and providing accurate torque readings by minimizing friction, thus enhancing operator safety and reducing fatigue.

Implementation Method 1

Located on each of the first and second ends of the tubular housing, a friction reducing device is mounted, such as a hushing, bearing or other similar device

Methodology Applied

Scientific EffectFriction reduction: Friction

Implementation Method 2

The housed socket extension absorbs vibrations for additional reduction in operator injury and fatigue

Methodology Applied

Scientific EffectVibration absorption: Damping

Data Source

PatentUS7997169B1Housed extension bar

Publication Date: 2011.08.16 KENTUCKY TOOLS LLC

AI summary

The housed socket extension has a high strength tubular housing with a socket extension apparatus which fits within the housing and protrudes from the ends of the housing. Two bearing retaining devices are mounted on the socket extension apparatus, adjacent to the ends of said housing. The first end of the socket extension receives a ratchet wrench or power tool, and the second end of the socket extension apparatus is designed to mate with the square hole of a socket or tool bit.