Looped Pet Leash Structure for Obstacle Detangling

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Solution Overview

Problem

Traditional pet leashes often become entangled with obstacles, leading to disturbances and potential escape of the pet, as well as awkward positions for the user, due to changes in lead length and regripping during untangling.

Innovation Solution

A pet leash apparatus featuring a flexible lead with fasteners that can transition between looped and fastened configurations, and an elongate member that positions between extended and tensioned states, allowing controlled repositioning of the lead to maintain a constant length and avoid entanglement.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Object-affected harmful factors

If the lead is retracted or regripped to untangle from obstacles, then the entanglement is resolved, but the lead length changes and the pet may be disturbed or escape

Engineering Contradiction:
Improveentanglement with obstaclesVSAvoidlead length stability
Core Design Contradiction:
Object-affected harmful factorsVSEase of operation

Solution Approach 1:

The leash system dynamically adjusts between looped and fastened configurations using fasteners that can be quickly engaged or disengaged. This dynamic reconfiguration allows the lead length to remain constant while changing the structural state to resolve entanglement, eliminating the need for manual retraction or regripping that would otherwise change the lead length.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The lead is segmented into multiple sections with fasteners positioned at intervals along its length. This segmentation allows specific portions of the lead to be fastened or unfastened independently, enabling localized resolution of entanglement while maintaining constant overall lead length and continuous control over the pet.

Inventive Principle:
Principle #1Segmentation

2Device complexity

If the lead is passively allowed to entangle, then the structure remains simple, but the pet control is compromised and user position becomes awkward

Engineering Contradiction:
Improvelead structureVSAvoidpet control stability
Core Design Contradiction:
Device complexityVSReliability

Solution Approach 1:

The fasteners are pre-positioned along the lead at strategic locations, allowing the user to quickly engage or disengage them before entanglement becomes problematic. This preliminary preparation enables rapid response to entanglement situations without compromising pet control or requiring complex maneuvers that would change lead length.

Inventive Principle:
Principle #10Preliminary action

3Object-affected harmful factors

If the lead length is changed to resolve entanglement, then the lead can be untangled, but the pet disturbance and escape risk increase

Engineering Contradiction:
Improveentanglement resolutionVSAvoidpet disturbance and escape risk
Core Design Contradiction:
Object-affected harmful factorsVSObject-generated harmful factors

Solution Approach 1:

The system dynamically transitions between looped and fastened states using quickly-operable fasteners, allowing entanglement resolution without changing lead length. This dynamic reconfiguration maintains continuous pet control while eliminating the harmful effects of entanglement, avoiding pet disturbance and escape risk associated with lead length changes.

Inventive Principle:
Principle #15Dynamics

Data Source

PatentUS20250380672A1Pet leash apparatus for entanglement avoidance
Publication Date: 2025.12.18 HOWARD JAMES A
  • US20250380672A1 patent drawing
  • US20250380672A1 patent drawing
  • US20250380672A1 patent drawing

AI summary

A pet leash apparatus that includes a lead comprised of a flexible material and a lead attachment in mechanical cooperation with the lead. An elongate member cooperates with a pet collar attachable to a pet and cooperates with the lead attachment. The elongate member is positionable between an extended position by slacking of the lead and a tensioned position by tensioning of the lead. The lead may define one continuous loop, and the lead cooperates with the lead attachment to reposition a gripped portion of the lead proximate a distal end to the proximal end by tensioning of the lead at the gripped portion. A plurality of fasteners is disposed along the lead to alter the lead between a fastened configuration having a plurality of gaps disposed along the lead with one or more of the plurality of fasteners attached to one another and a looped configuration having the one continuous loop with all of the fasteners detached from one another.