Dual U-Shaped Dog Leash for Pull Force and Shock Control
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Solution Overview
Problem
Conventional leashes for large or strong dogs concentrate pulling force on a single point, leading to discomfort, loss of control, and increased strain for the owner, and lack ergonomic handholds and secondary loops to manage pulling behavior effectively.
Innovation Solution
A dual U-shaped leash design with a secondary U-strap and ergonomic handholds, distributing pulling force across multiple attachment points, combined with a bungee section for shock absorption, to maintain control and reduce strain.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a single-point lead is used, then the leash structure is simple, but the owner experiences discomfort and loss of control when controlling large or strong dogs
Solution Approach 1:
The leash is divided into multiple segments including a primary U-shaped strap with front and rear sections, a secondary U-strap, multiple handholds, and a bungee section. Each segment serves a specific function in distributing force and maintaining control, transforming a simple single-point lead into a segmented system that effectively manages large or strong dogs.
2Ease of operation
If a multi-point attachment is used, then control is improved, but the leash lacks a secondary loop to prevent over-pulling and ergonomic handholds
Solution Approach 1:
The leash incorporates a primary U-shaped strap divided into front and rear sections, plus a secondary U-strap, creating multiple attachment points and control zones. This segmentation allows force distribution across different parts of the harness while providing multiple handholds for ergonomic grip at various positions.
Solution Approach 2:
The secondary U-strap acts as an intermediary element that prevents over-pulling by limiting the maximum extension of the leash. It serves as a mechanical stop that intervenes when the dog pulls excessively, preventing loss of control without requiring the owner to exert excessive force.
3Adaptability or versatility
If the leash allows full extension, then the dog has freedom of movement, but the leash can be pulled too far causing loss of control
Solution Approach 1:
The secondary U-strap serves as a mechanical intermediary that limits leash extension. It is positioned within the main U-shaped section to prevent the leash from being pulled too far in any direction, acting as a built-in stop that maintains control while allowing sufficient range of motion for normal walking.
Solution Approach 2:
The leash design changes the effective length parameter dynamically through the secondary U-strap mechanism. When the dog pulls, the secondary strap engages to reduce the maximum extension, effectively changing the leash length parameter from a fixed full extension to a controlled range that prevents over-pulling.
4Ease of operation
If the owner grips tightly to maintain control, then control is maintained, but the owner experiences strain and discomfort
Solution Approach 1:
The leash is segmented into multiple handholds positioned at different locations along the primary and secondary U-shaped straps. This segmentation allows the owner to grip at various points depending on the situation, distributing the mechanical stress across different parts of the hand and arm rather than concentrating it at a single grip point.
Solution Approach 2:
The secondary U-strap acts as an intermediary that reduces the force the owner must exert. By preventing over-pulling and distributing force across multiple attachment points, it mediates between the dog's pulling force and the owner's control, reducing the strain on the owner's grip and arm.
5Adaptability or versatility
If a basic multi-point design is used, then some control is provided, but it lacks ergonomic handholds at multiple points for managing different leash lengths
Solution Approach 1:
The leash incorporates multiple discrete handholds positioned at different locations along the primary and secondary U-shaped straps. This segmentation provides the owner with multiple grip points to choose from, allowing comfortable management of the dog at various effective leash lengths without requiring a single long leash.
6Ease of operation
If the leash is rigid to maintain control, then control is precise, but the leash transmits shock from sudden pulls causing injury risk
Solution Approach 1:
The bungee section changes the mechanical properties of the leash by introducing elasticity. It transforms the leash from a rigid structure that transmits shock directly to the owner into a flexible system that absorbs sudden pulls through elastic deformation, reducing the peak forces transmitted while maintaining control during normal walking.
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
The system provides enhanced control and comfort by evenly distributing pulling force, preventing excessive leash movement, and absorbing sudden shocks, ensuring a safer and more comfortable walking experience for both the dog and owner.
Implementation Method 1
The bungee section further enhances the design by absorbing shock from sudden pulls, reducing the risk of injury to the owner
Data Source
AI summary
An anti-pull leash system for enhanced control and safety is disclosed. The leash system distributes the pulling force across multiple attachment points using a dual U-shaped leash design, ensuring control is maintained without requiring the owner to over-grip or lean back, reducing strain and discomfort. The secondary U-strap adds an additional layer of control, preventing the leash from being pulled too far in one direction. Additionally, the ergonomic handholds placed strategically along the leash allow the owner to comfortably manage the dog at various leash lengths, providing a tailored walking experience that keeps the dog comfortable while enhancing the owner's ability to control the dog in different situations. The bungee section absorbs shocks from sudden pulls, reducing the risk of injury to the owner and providing a safer, more comfortable walking experience for both the dog and the owner.