Dog Harness Motion Control Cord Loop System
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Solution Overview
Problem
Conventional dog harnesses and collars are insufficient for controlling the movement of medium to large dogs, as they often lead to injury or loss of control, especially due to the strong hind leg muscles, and existing solutions either fail to properly restrain or risk harming the dog's legs.
Innovation Solution
A motion control harness with a cord and loop system that interlaces with a lower body harness, engaging the quadriceps and hamstrings to resist movement and prevent pulling, while being adjustable to avoid leg injury and provide effective restraint.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If a conventional harness or collar is used to control a medium to large dog, then the dog owner can walk the dog with basic control, but the dog can overpower the owner due to strong hind leg muscles
Solution Approach 1:
The patent introduces an intermediary control mechanism - a cord system that connects the harness to the dog's hind legs. This intermediary transfers and amplifies the owner's pulling force to the dog's quadriceps and hamstring muscles, allowing effective control of medium to large dogs without requiring the owner to directly withstand the full force of the dog's muscles
2Device complexity
If loops are positioned around the lower portion of the hind legs (below hocks), then the harness structure is simple, but the main power muscles (quadriceps/hamstrings) are not controlled
Solution Approach 1:
The patent employs dynamic positioning of the control loops on the hind legs. The loops are positioned to engage the quadriceps and hamstring muscles during the dog's natural movement cycle, allowing the harness to effectively control the power muscles while maintaining structural simplicity. The system adapts to the dog's stride, applying control force at the optimal moment when the muscles are most engaged
3Ease of manufacture
If loops are positioned around the hock (ankle), then the harness is easier to construct, but the animal can become tied up and injure its legs
Solution Approach 1:
The patent applies local quality by selectively positioning the control loops on specific regions of the hind legs - specifically around the thigh area where the quadriceps and hamstring muscles are located. This localized positioning ensures control force is applied to the power muscles without restricting the hock joint movement, thereby preventing the tying up and leg injury problems associated with lower loop placement
4Force
If the harness uses loops around the hind legs, then control over the dog's movement is improved, but the loops will loosen and fall off during the dog's stride
Solution Approach 1:
The patent utilizes the dynamic nature of the dog's movement to maintain loop stability. The loops are positioned and sized to accommodate the natural expansion and contraction of the hind leg muscles during stride. As the dog moves, the muscles compress against the loops, actually tightening them rather than loosening, ensuring continuous secure engagement throughout the movement cycle
Data Source
AI summary
A restraint harness for a dog, particularly a dog of medium size and larger, including a conventional adjustable dog harness or collar and an attached control extension member. The control extension member includes a plurality of straps configured to extend to the hind end of the dog and a motion control cord that is interlaced in and between the conventional adjustable dog harness and the control extension member. The motion control cord encircles the dog's hind legs and can be tightened around the thighs with minimal force, where such tightening substantially restrains the dog without causing injury to the dog.