One-Handed Leash Coupling Mechanism for Gloved Operation
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Solution Overview
Problem
Attaching or detaching a leash from a pet's collar is cumbersome, especially in cold climates where gloves must be removed and in hot climates where the metal D-ring is uncomfortable to touch.
Innovation Solution
A leash system allowing one-handed attachment and detachment without touching the D-ring, using two arms with a coupling end and handle end, a pivot, and a spring mechanism that maintains a gap to prevent complete closure, enabling secure attachment directly to the collar.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a traditional snap or hook is used to attach the leash to the D-ring on the collar, then the attachment is secure, but the operation requires two hands and removal of gloves in cold climates
Solution Approach 1:
The attachment device is segmented into two separate arms that can be independently manipulated. Each arm has its own coupling end and handle end, allowing the user to operate them separately with one hand while maintaining secure attachment functionality
Solution Approach 2:
The patent introduces an intermediary attachment device that mediates between the leash and the collar D-ring. This device includes bars that slide between the collar and pet, and arm connectors that link the arms to each other and to the leash, eliminating the need for direct manual manipulation of the D-ring
2Object-affected harmful factors
If gloves are worn in cold climates to protect hands, then hand protection is provided, but the ability to manipulate small attachment components is reduced
Solution Approach 1:
The intermediary attachment device with its larger handle ends and simplified coupling mechanism allows users to operate while wearing gloves. The design provides larger gripping surfaces and reduces the need for fine motor skills, making it feasible to attach and detach leashes while maintaining hand warmth
Solution Approach 2:
The attachment device incorporates springs that automatically close the coupling ends after opening, and closure restrictors that prevent complete closure. This self-service mechanism reduces the manual dexterity required, as the device assists in its own operation rather than requiring precise manual control
3Reliability
If the metal D-ring on the collar is used for attachment, then secure connection is achieved, but discomfort occurs in hot climates due to heat conduction
Solution Approach 1:
The patent introduces an intermediary attachment device that connects to the D-ring through bars that slide between the collar and pet rather than requiring direct contact. This intermediary structure reduces thermal transfer to the user's hands while maintaining secure attachment through the same D-ring connection point
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
Enables easy, safe, and efficient leash management without needing to remove gloves or mittens or touch the D-ring, providing a secure and comfortable interaction with the pet's collar in various climates.
Implementation Method 1
at least one spring structured and arranged to close such coupling ends
Implementation Method 2
a pivot between such two arms positioned to transfer forces on such handle end to such coupling end to open such coupling ends
Data Source
AI summary
The present invention relates to providing a system which allows a user to attach, or detach, a leash to, or from, a pet's collar using only one hand, without the need to remove mittens or gloves in colder climates, without the need to touch or grasp a hot metal “D-ring” or other method of attachment on a collar in hot climates, but simply attaching the leash directly to the collar itself.