360-Degree Hands-Free Leash Attachment with Inner Spinner
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Solution Overview
Problem
Conventional leash systems are unsuitable for hands-free use during outdoor activities with dogs or children, causing strain on the user and limiting the animal's movement, as they require manual control and restrict the animal's ability to move freely in all directions.
Innovation Solution
A 360-degree hands-free leash attachment unit designed for the waist, featuring a flexible outer hose with self-locking capabilities, a secondary corrugated inner hose, and an inner-spinner mechanism that allows the leash to spin freely, reducing strain on the user and enabling the animal to move freely in any direction without tangling or restricting movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a standard leash is used, then the owner can control the dog, but the owner must use one hand to maintain control causing strain on fingers, hands, arms, shoulders, neck, legs and back
Solution Approach 1:
The patent replaces the manual hand-holding mechanism with a mechanical waist-worn system that uses a rotating reel and spring mechanism to automatically manage leash tension and pay out, eliminating the need for hand control and distributing mechanical load away from the user's body
Solution Approach 2:
The leash system provides self-service through the automatic reel mechanism that pays out and retrieves the leash independently, allowing the dog to move freely while the mechanical system self-regulates tension without requiring active user intervention
2Ease of operation
If a standard leash is used, then the owner can control the dog, but the owner must switch the leash between hands or get tangled when the dog moves in different directions
Solution Approach 1:
The patent replaces manual leash management with an automated mechanical reel system mounted on the waist, which uses a rotating spool and spring mechanism to automatically handle leash payout and retrieval, eliminating the need for hand switching and tangling
3Adaptability or versatility
If a standard leash is used, then the owner can maintain control, but the animal is limited in movement and cannot roam freely around the owner
Solution Approach 1:
The patent implements a dynamic system where the leash length and tension are automatically adjusted based on the dog's movement, allowing full 360-degree freedom while the mechanical reel maintains appropriate tension levels through spring mechanisms that respond to pull forces
Solution Approach 2:
The patent replaces manual control mechanisms with an automated mechanical system that uses a rotating reel, spring tensioning, and friction control to maintain leash management without restricting the dog's natural movement patterns
4Stability of the object's composition
If a rigid waist attachment is used, then the structure provides stability, but it grabs clothing and causes discomfort
Solution Approach 1:
The patent uses a flexible belt or strap material for the waist attachment that conforms to the body shape, preventing clothing grabbing while maintaining stability through friction and adjustable fastening mechanisms
Data Source
AI summary
A full 360 degrees hands free leash attachment unit is disclosed for walking or running with a dog, used as a child restraint and for construction workers or the like. It consist of an outer member that attaches around the waist area of a person. And, there is also a functional inner member and a leash attachment element which connects to it. Another embodiment has a circular waist member with a double curved inward design. And, another embodiment has a circular waist member with an extended lower shelf all around and, an alternate waist member with plastic pipe caps installed all around. All of the embodiments uses the inner spinner and the leash attachment element.