Tracer Wire Connector With Insulation-Piercing Sealed Cradles

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Solution Overview

Problem

Existing tracer wire connectors fail to effectively maintain an electrically conductive path between multiple tracer wires, particularly when connecting through and dead-end tracer wires, and do not provide a reliable water-resistant seal.

Innovation Solution

A tracer wire connector comprising a cover and base with cradles, portals, and insulation piercing members that pierce through the insulating jacket of tracer wires to establish an electrically conductive path, while maintaining a water-resistant seal using sealing members and fastening assemblies.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If existing tracer wire connectors are used to connect multiple tracer wires, then the connection structure is simple, but the electrical connection reliability is poor and water-resistant sealing is inadequate

Engineering Contradiction:

Improveelectrical connection reliabilityVSAvoidconnector structure complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The connector is divided into distinct functional components: a base portion with cradles for wire positioning, a cover portion with portals for wire access, and insulation piercing members for electrical contact. This segmentation allows each component to be optimized for its specific function while maintaining overall reliability.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Insulation piercing members serve as intermediaries that penetrate the insulating jacket of tracer wires to establish reliable electrical contact with the conductive core. These members bridge the gap between the external connector structure and the internal wire conductor, ensuring consistent electrical connection.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Reliability

If insulation piercing members are used to pierce through the insulating jacket, then electrical conductivity is improved, but the risk of damaging the wire conductor increases

Engineering Contradiction:

Improveelectrical conductivityVSAvoidwire conductor damage risk

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The insulation piercing members are designed with differentiated properties: a hardened piercing tip for penetrating the insulating jacket and a softer contact surface for gentle engagement with the conductive core. This local quality variation allows the same component to perform both piercing and safe contact functions.

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

The connector structure includes positioning features and cradles that guide the tracer wires into proper alignment before the insulation piercing members engage. This pre-positioning ensures that the piercing action occurs at the correct location and angle, minimizing the risk of conductor damage.

Inventive Principle:

Principle #11Beforehand cushioning (Prior cushioning)

3Ease of operation

If multiple portals are provided on the cover for wire access, then ease of installation is improved, but water-resistant sealing becomes more difficult

Engineering Contradiction:

Improveinstallation easeVSAvoidwater-resistant sealing

Core Design Contradiction:

Ease of operationVSReliability

Solution Approach 1:

The cover portion incorporates a flexible sealing member that conformally seals around the portals where tracer wires pass through. This flexible sealing film maintains water resistance while accommodating the multiple access points required for wire installation.

Inventive Principle:

Principle #30Flexible shells and thin films

Solution Approach 2:

The connector combines rigid structural materials for the base and cover with flexible sealing materials at the portal interfaces. This composite construction provides both the structural integrity needed for multiple portals and the sealing capability to maintain water resistance.

Inventive Principle:

Principle #40Composite materials

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 connector ensures a reliable electrical connection and water-resistant seal, facilitating the detection of non-conductive underground objects by maintaining an electrically conductive path between tracer wires, even when connecting through and dead-end tracer wires.

Implementation Method 1

The at least two insulation piercing members are electrically conductive and electrically coupled to each other... establish an electrically conductive path between multiple tracer wires

Methodology Applied

Scientific EffectElectrical conduction: Conduction (electrical)

Data Source

PatentUS12476394B2Multi-use connector for tracer wire

Publication Date: 2025.11.18 HUBBELL INC

AI summary

Trace wire connectors that include a cover that can be attached to a base and used to electrically interconnect two or more tracer wires without having to remove insulation from the tracer wires. The cover has multiple portals that permit one or more tracer wires to pass into an inner cavity of the cover. The base has multiple cradles on which tracer wires passing into the cavity can rest. The cover can be oriented relative to the base for use with a through tracer wire and a dead-end tracer wire, or for use with multiple dead-end tracer wires.