Convertible Dog Lead with Adjustable Stops for Choke Prevention
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Solution Overview
Problem
Conventional dog handling devices, such as collar and leash systems, fail to provide adequate control and comfort for unruly or anxious dogs, particularly in shelter settings, as they can cause injury or discomfort due to choking or escape issues.
Innovation Solution
A convertible and size-adaptable dog lead formed from a flexible cord with a handle and loops, allowing it to be converted into a harness, featuring adjustable stops and a flexible washer to prevent neck constriction and ensure chest band tightness, providing secure control without discomfort.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a slip collar is used to control a difficult dog, then the dog cannot escape, but the dog may choke or suffer pain and injury
Solution Approach 1:
The lead is divided into two separate loops: a first loop that forms a slip collar around the neck and a second loop that forms a chest band around the chest. This segmentation allows the control function to be distributed, so when the dog pulls, the chest band tightens rather than the neck collar, maintaining control while preventing choking.
Solution Approach 2:
The chest band acts as an intermediary element between the handler and the dog's body. Instead of applying force directly to the neck through the slip collar, the force is transmitted through the chest band which then influences the dog's movement, providing control while avoiding direct pressure on the vulnerable neck area.
2Object-affected harmful factors
If a harness is used to control a dog, then the dog is comfortable and cannot escape, but it is difficult and time-consuming to put on and take off
Solution Approach 1:
The lead incorporates dynamic elements that allow it to transform from a simple collar configuration to a full harness configuration. The second loop can be passed through the first loop to create the chest band, converting the device from a basic collar into a more secure harness setup without requiring separate pieces of equipment.
Solution Approach 2:
The single lead structure serves multiple functions: it can be configured as a simple slip collar for basic control, or transformed into a full harness with a chest band for enhanced control and comfort. This multi-functionality eliminates the need for separate collar and harness devices, reducing the time required to equip the dog.
3Object-affected harmful factors
If a harness is left on the dog between walks, then the dog is comfortable, but the dog may attempt to chew it off
Solution Approach 1:
The lead is designed to be easily discarded (removed) and recovered (reapplied) between walks. The simple slip collar configuration can be quickly removed when not in use, and the full harness can be rapidly reconfigured when needed, allowing the dog to be comfortable without the equipment when it's not necessary to wear it.
4Device complexity
If a conventional collar and leash is used, then the setup is simple, but the dog may slip out and escape
Solution Approach 1:
The lead is segmented into two loops that work together: the first loop provides the basic slip collar function while the second loop creates an additional chest band. This segmentation allows the device to maintain the simplicity of a single-piece construction while achieving the escape prevention of a multi-component harness through clever configuration.
Data Source
AI summary
In first, second, and third embodiments of the invention the dog lead is formed from a cord and has a first loop and a second loop at one end and a handle at the other end. The handle and a portion of the cord are passed through the first loop to form a collar. The handle and an additional portion of the cord are then passed under the dog's chest and through the second loop to form a chest band. In a fourth embodiment of the invention, a stop is mounted snugly on the cord and a washer is mounted to the cord. In a fifth embodiment of the invention, an inner stop and a outer stop are provided on both sides of a ring to keep the collar from becoming tight or loose, making the dog lead virtually escape proof.