Insulated Wire Gripping Tool with Curved Tip and Sliding Blade

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Solution Overview

Problem

Electrical workers face hazards while handling high voltage electrical components due to accidental contact and miswiring, which can lead to shock, arc faults, and electrical fires, as they often need to manipulate components with their hands or metal tools, increasing the risk of exposure to live circuits.

Innovation Solution

A wire gripping and stripping tool with a curved tip and a closing mechanism that allows for safe handling and stripping of electrical wires, featuring a sliding elongated member and a cutting blade, constructed from non-conductive materials to reduce the risk of electrical hazards.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If electrical workers use their hands or metal tools to manipulate electrical components, then they can directly handle and manipulate components, but the risk of accidental contact with live circuits increases

Engineering Contradiction:
Improvedirect handling capabilityVSAvoidrisk of electrical shock
Core Design Contradiction:
Ease of operationVSObject-affected harmful factors

Solution Approach 1:

The patent introduces an insulated tool as an intermediary device between the electrical worker's hand and the electrical components. The tool features a non-conductive body with a gripping mechanism that allows workers to manipulate wires and components without direct skin contact, thereby eliminating the risk of electrical shock while maintaining full operational capability

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The tool is segmented into distinct functional zones: a non-conductive body portion for safe handling, a gripping mechanism portion for manipulating components, and an insulated elongated member connecting them. This segmentation allows each part to perform its specific function while maintaining overall safety

Inventive Principle:
Principle #1Segmentation

2Strength

If electrical workers use metal tools to manipulate components, then they can effectively grip and manipulate wires, but the risk of arc faults and electrical fires increases

Engineering Contradiction:
Improvegripping forceVSAvoidrisk of arc faults
Core Design Contradiction:
StrengthVSObject-generated harmful factors

Solution Approach 1:

The tool employs composite material construction, combining non-conductive materials for the body and gripping surfaces with metal cutting blades enclosed within the insulated structure. This allows the tool to provide strong gripping force where needed while maintaining electrical insulation to prevent arc faults and electrical fires

Inventive Principle:
Principle #40Composite materials

3Productivity

If electrical workers manually handle wires without insulation stripping, then they can quickly install components, but miswiring can occur leading to exposure to live circuits

Engineering Contradiction:
Improveinstallation speedVSAvoidwiring accuracy
Core Design Contradiction:
ProductivityVSReliability

Solution Approach 1:

The tool merges multiple functions into a single device: wire gripping, insulation stripping, and wire cutting are all integrated into one tool. The insulated body houses both the gripping mechanism and the cutting blade, allowing workers to perform all wire preparation tasks without switching tools, thereby maintaining high productivity while ensuring wiring accuracy through proper insulation removal

Inventive Principle:
Principle #5Merging (Combining)

4Reliability

If electrical workers take precautions to turn off circuits, then they can reduce risk of shock, but mislabeling or miswiring can still cause exposure to live circuits

Engineering Contradiction:
Improvecircuit safetyVSAvoidrisk of accidental contact
Core Design Contradiction:
ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The insulated tool provides a continuous protective barrier between the worker and electrical components throughout the entire installation process. This beforehand protection ensures that even if precautions like circuit shutdown are mistakenly overlooked or if miswiring occurs, the worker remains protected from electrical shock by the non-conductive tool

Inventive Principle:
Principle #11Beforehand cushioning (Prior cushioning)

Data Source

PatentUS10790648B2Wire gripping and stripping tool and method of using same
Publication Date: 2020.09.29 JONARD INDS CORP
  • US10790648B2 patent drawing
  • US10790648B2 patent drawing
  • US10790648B2 patent drawing

AI summary

Embodiments disclosed herein include devices and methods for gripping and stripping an electrical wire. The tool may include a body, having a first portion with a curved tip, and a second portion. The tool may also include a closing mechanism mounted on the body, and an elongated member having a protruding tip and coupled to the closing mechanism. The elongated member can slidably move towards the second portion, causing the protruding tip to move away from to the curved tip, with respect to movement of the closing mechanism for receiving at least a portion of an electrical wire inserted into the opening, or move towards the first portion, causing the protruding tip to move toward the curved tip, with respect to another movement of the closing mechanism for gripping the received portion of the electrical wire.