Dog Harness with Curved Coupling Members for Friction Reduction

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Solution Overview

Problem

Dog harnesses face issues with preventing escape, undue stress, and difficult adjustment due to loose fitting and poorly designed structural elements, especially when a dog tries to move forward or backward against the leash, leading to potential slipping out and friction-related difficulties during use.

Innovation Solution

A dog harness with a freely moving leash strap system that tightens and fastens the torso when the dog tries to escape, featuring coupling members with a ring and rod design that allows smooth passage and adjustment, reducing friction and stress on the dog, and enabling easy adjustment without causing undue tension.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the harness is tightened to prevent the dog from escaping, then the reliability of preventing escape is improved, but the dog may experience undue stress

Engineering Contradiction:
Improvepreventing escapeVSAvoidstress on dog
Core Design Contradiction:
ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The harness employs dynamic adjustment mechanisms that allow the straps to automatically tighten when the dog pulls against the leash, creating a secure fit that prevents escape. When the dog stops pulling, the harness naturally loosens, eliminating continuous pressure and stress on the animal. This dynamic response ensures reliability only when needed.

Inventive Principle:
Principle #15Dynamics

2Reliability

If the harness is tightened to prevent escape, then the reliability of preventing escape is improved, but the ease of operation for adjustment is worsened

Engineering Contradiction:
Improvepreventing escapeVSAvoidadjustment difficulty
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The harness features self-adjusting straps that automatically tighten or loosen based on the dog's movement and pulling force, eliminating the need for manual adjustment during use. The coupling members are designed to engage and disengage easily through simple hand manipulation, allowing quick adjustments without requiring tools or complex operations.

Inventive Principle:
Principle #25Self-service

3Reliability

If the leash strap is fixed to prevent movement, then the reliability of control is improved, but the ease of operation for adjustment is worsened

Engineering Contradiction:
ImprovecontrolVSAvoidstrap adjustment
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The leash strap is designed with dynamic coupling members that allow controlled movement and adjustment. The strap can be easily loosened or tightened by hand manipulation of the coupling members, providing both secure control when needed and easy adjustability when the dog is stationary. The friction reduction features enable smooth operation during adjustment.

Inventive Principle:
Principle #15Dynamics

4Device complexity

If the coupling member has a flat profile for simple structure, then the device complexity is reduced, but the ease of operation for adjustment is worsened due to friction

Engineering Contradiction:
Improvecoupling member structureVSAvoidadjustment friction
Core Design Contradiction:
Device complexityVSEase of operation

Solution Approach 1:

The coupling members incorporate curved or rounded surfaces instead of flat profiles, reducing friction between the strap and the coupling member during adjustment. This curvature allows the strap to slide more smoothly through the coupling member, making manual adjustment easier while maintaining a relatively simple overall structure. The rounded geometry naturally reduces contact friction compared to flat surfaces.

Inventive Principle:
Principle #14Spheroidality (Curvature)

Data Source

PatentUS10390518B2Dog harness
Publication Date: 2019.08.27 YUN YEU HOON
  • US10390518B2 patent drawing
  • US10390518B2 patent drawing
  • US10390518B2 patent drawing

AI summary

A dog harness includes a harness body, having a front potion and a rear potion, first and second front straps, first and second rear straps, first and second coupling members, first and second leash straps and a connecting means, wherein the first leash strap loops through the first coupling member such that the first leash strap is adapted to move relative to the first coupling member, wherein the second leash strap loops through the second coupling member such that the second leash strap is adapted to move relative to the second coupling member. Each of the coupling members include a ring and a rod. The coupling members are curved to lessen the amount of friction experienced by the leash straps when the leash straps loop through the coupling members.