Multi-lead Dog Leash Housing with Shutter Mechanism

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Solution Overview

Problem

Existing dog leash systems are inadequate for walking multiple dogs simultaneously without tangling the leads.

Innovation Solution

A multi-lead dog leash system featuring a housing with a longitudinal slot and a shutter mechanism that allows each dog lead to be securely attached to the housing, preventing tangling by controlling the passage of the lead terminus through the housing.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If multiple animal leads are attached to the housing simultaneously, then the system can walk multiple dogs at once, but the leads become tangled

Engineering Contradiction:

Improvecapability to walk multiple dogsVSAvoidlead tangling

Core Design Contradiction:

Adaptability or versatilityVSObject-generated harmful factors

Solution Approach 1:

The housing contains multiple separate compartments or slots, each designed to accommodate one animal lead terminus. This segmentation physically separates the leads within the housing structure, preventing them from tangling while allowing multiple dogs to be walked simultaneously. Each terminus has its own designated space with controlled access points.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The housing acts as an intermediary device between the user and multiple dogs. It provides a centralized control point where leads are organized and managed, preventing direct interaction between leads that would cause tangling. The shutter mechanism serves as an additional intermediary to control lead passage.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Ease of operation

If the hole opening width is large enough to allow terminus passage, then leads can be easily attached and detached, but terminus cannot be retained securely in the housing

Engineering Contradiction:

Improveterminus attachment and detachmentVSAvoidterminus retention in housing

Core Design Contradiction:

Ease of operationVSReliability

Solution Approach 1:

The shutter mechanism provides dynamic control over terminus access to the housing. The shutter can be moved between open and closed positions, allowing the opening width to change from large (for terminus insertion) to small or closed (for secure retention). This dynamic adjustment resolves the contradiction between ease of operation and reliable retention.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The effective opening width parameter is changed by the shutter position. When the shutter is open, the opening width is large enough to allow terminus passage for easy attachment. When the shutter is closed, the opening width is reduced to prevent terminus removal, ensuring secure retention. This parameter change enables both easy operation and reliable retention at different times.

Inventive Principle:

Principle #35Parameter changes

Data Source

PatentUS12310334B2Multi-lead dog leash system

Publication Date: 2025.05.27 YEAGER JEFF

AI summary

A multi-lead leash system has a housing that is configured to removably capture ends of a plurality of animal leads within the housing with the leads extending outwardly from the housing. The opposite ends of the leads each have coupling to attach the lead to an animal collar. The housing and captured ends are configured such the capture ends are freely movable within the housing to prevent tangling of the respective leads while walking animals attached to the leads, for example. The housing also has a user lead coupling for the removable coupling of a user lead to the housing, the user lead being grasped by a user using the leash system.