Pet Leash Loop Handle with Sliding Cinch and Elastic Member
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Solution Overview
Problem
Conventional pet leashes with fixed loop handles often fall off when worn on the wrist, and adjustable handles can be difficult to use due to size issues and risk of injury from sudden animal movements.
Innovation Solution
A pet leash with a sliding cinch member and elastic loop handle that allows adjustable sizing, ensuring the loop remains on the wrist without undue tension and can release if the animal jerks, preventing injury.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the loop is made small enough to fit snugly over the user's wrist, then the loop remains secure on the wrist, but the user has difficulty getting their hand through the loop
Solution Approach 1:
The patent applies an elastic member within the fabric tube that allows the loop to dynamically change size. The loop can be stretched to a larger size for easy hand insertion, then returns to a smaller snug size for secure wrist retention, resolving the contradiction between security and ease of operation
2Ease of operation
If the loop is made large enough to easily pass hand through, then the user can insert their hand easily, but the loop falls off the wrist easily
Solution Approach 1:
The elastic member enables the loop to transition between large and small sizes as needed. When the user needs to insert their hand, they can stretch the loop to a larger size. Once the hand is through, the elastic member naturally returns the loop to a smaller size that secures onto the wrist, thus resolving the contradiction
3Reliability
If the loop is adjusted to fit snugly over the wrist, then the loop remains secure, but the user can be pulled off balance and suffer injury if the animal suddenly moves away
Solution Approach 1:
The elastic member provides dynamic response to sudden forces. When the animal suddenly moves away, the elastic member stretches to absorb the shock, preventing the loop from being forcefully pulled off the wrist and reducing injury risk, while still maintaining secure fit during normal use
Solution Approach 2:
The elastic member acts as a pre-configured cushioning element that absorbs sudden impact forces. By incorporating this energy-absorbing component beforehand, the system protects the user from injury when the animal suddenly moves, resolving the contradiction between security and safety
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 leash provides secure handling of the pet while allowing free use of the user's hand and reduces the risk of injury from sudden pulls by the animal.
Implementation Method 1
an elastic member disposed inside the fabric tube of the handle portions, and the elastic member can have a rest length that is shorter than the total handle length
Implementation Method 2
The cinch passage is configured to frictionally engage the first and second sides of the loop and to slide along the first and second sides of the loop when pushed
Data Source
AI summary
A pet leash includes a loop handle that is configured to fit loosely over a user's wrist or to be held in the user's hand. A sliding cinch member is disposed on the loop handle and is configured to allow a user to adjust the size of the loop between the sliding cinch member and the end of the loop handle, allowing a user to place their hand through the loop and slide the sliding cinch member to make the portion of the loop handle over the user's wrist fit snugly.