One-Handed Leash Quick-Release for Secure Single-Hand Control

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Solution Overview

Problem

Conventional dog leashes require two-handed operations for release, which is impractical and potentially dangerous in time-critical situations, as they separate the ability to retain force with the leash and the ability to release it, necessitating a quick-release mechanism that can be operated with one hand.

Innovation Solution

A one-handed leash with a quick-release mechanism featuring a trigger assembly on the handle, a cable running through the leash, and a clip that can be released and reattached with one hand, allowing for seamless control and freedom.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If conventional two-handed leash release mechanism is used, then the leash can be securely held and released, but the release operation requires two hands which is impractical and dangerous in time-critical situations

Engineering Contradiction:
Improveone-handed release operationVSAvoidsecure retention and release control
Core Design Contradiction:
Ease of operationVSReliability

Solution Approach 1:

The patent combines the retention function and release function into a single integrated mechanism located at the collar attachment point. The release mechanism includes a button or tab that can be actuated with one hand while maintaining secure holding of the leash, eliminating the need for separate two-handed operations. This merging allows the user to both retain and release the leash with a single hand, resolving the contradiction between ease of one-handed operation and reliable control.

Inventive Principle:
Principle #5Merging (Combining)

2Ease of operation

If conventional leash design is used, then the structure is simple, but the release mechanism requires two hands or complex dual-system functions

Engineering Contradiction:
Improvequick-release capabilityVSAvoidmechanism structure
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The patent segments the leash system into distinct functional components: a holding portion, a collar attachment mechanism, and an integrated release mechanism. The release mechanism is further segmented into a actuator (button or tab) and a releasing component that separates the collar attachment. This segmentation allows each component to perform its specific function efficiently, enabling quick one-handed release without requiring complex dual-system functions while maintaining overall structural simplicity.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The release mechanism is designed to be self-actuating through a simple button or tab press that automatically triggers the collar release. The mechanical design incorporates spring-loaded or friction-based components that automatically disengage when the button is pressed, eliminating the need for complex control systems or multiple操作步骤. This self-service approach enables quick release with minimal user input while keeping the overall mechanism simple.

Inventive Principle:
Principle #25Self-service

3Speed

If force must be removed before release in conventional leashes, then the retention is secure, but the release process is delayed and requires additional steps

Engineering Contradiction:
Improverelease speedVSAvoidrelease operation simplicity
Core Design Contradiction:
SpeedVSEase of operation

Solution Approach 1:

The release mechanism is pre-configured with spring-loaded or tensioned components that are ready to disengage the collar attachment immediately upon button press. The mechanical design incorporates pre-loaded springs or friction releases that require minimal activation force and time. This preliminary preparation of the release mechanism allows for instantaneous collar detachment when the button is pressed, achieving both high release speed and operational simplicity without requiring force removal beforehand.

Inventive Principle:
Principle #10Preliminary action

Data Source

PatentUS12532867B2One-handed leash with quick-release mechanism
Publication Date: 2026.01.27 THOMPSON JACOB
  • US12532867B2 patent drawing
  • US12532867B2 patent drawing
  • US12532867B2 patent drawing

AI summary

The present invention relates to a one-handed leash with a unique quick-release mechanism. The leash may include a handle, a trigger assembly located on the handle, a cable system running through the interior of a leash body, and a releasable collar attachment mechanism at the end of the leash body. The trigger assembly, when activated, manipulates the cable system to release or reattach to a collar, enabling the user to control the leash with one hand. The leash may also include additional features depending on the configuration of the system. The invention provides a significant improvement over traditional leashes, offering ease of use, durability, and versatility, making it suitable for various applications including law enforcement, military, and recreational activities. The invention also includes a method for making and using the disclosed leashes.