Spiral Stake Pet Tether with Rotating Housing
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Solution Overview
Problem
Existing pet tethers are easily pulled from the ground due to straight stakes, prone to tangling, and difficult to install in hard soil, lacking a rotatable and retractable design with sufficient leverage.
Innovation Solution
A pet tether with a spiral stake and rotatable tether housing, featuring a handle for leverage, retractable leash mechanism with a reel and spring system, and attachment means to prevent complete retraction, ensuring secure installation and preventing tangling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a straight stake is used to secure the pet tether, then the structure is simple, but the stake is easily pulled from the ground by the pet
Solution Approach 1:
The patent applies a spiral shape to the stake instead of a straight form. The spiral configuration allows the stake to be driven into the ground more effectively and provides superior anchoring resistance against pull-out forces from pets, resolving the contradiction between structural simplicity and anchoring reliability.
2Ease of manufacture
If a straight stake is used, then the installation is simple, but it is difficult to install in hard ground
Solution Approach 1:
The spiral shape of the stake enables easier installation in hard ground compared to straight stakes. The spiral geometry allows the stake to be rotated and driven into the ground with less resistance, overcoming the difficulty of installing in hard soil while maintaining operational simplicity.
3Ease of operation
If the pet circles around the stake, then the pet can move freely, but the tether becomes tangled
Solution Approach 1:
The spiral stake configuration prevents the tether from tangling when the pet circles around it. The curved, helical structure of the spiral stake creates a different spatial relationship between the tether and stake compared to a straight stake, eliminating the tangling problem while preserving pet movement freedom.
4Ease of operation
If a handle is added to the spiral stake, then sufficient leverage is provided for installation, but the device complexity increases
Solution Approach 1:
The handle is integrated with the spiral stake as a unified component rather than a separate attachment. This merging of the handle and spiral stake structures provides the necessary leverage for installation while minimizing the increase in device complexity through design integration.
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 solution provides a secure, easy-to-install pet tether that resists being pulled from the ground and minimizes tangling, allowing for effective containment of pets in various soil conditions.
Implementation Method 1
The bottom section may comprise a pointed end. The spiral shape and rotation mechanism provide mechanical advantage to drive the stake into hard or rocky soil
Implementation Method 2
The spiral stake design creates friction between the stake and substrate, preventing the tether from being easily pulled out
Implementation Method 3
Spring means may be arranged around the shaft and adapted to rotate the reel on the shaft for the retracting of the tether line after deployment. The spring means may comprise a coil spring.
Data Source
AI summary
A rotatable and retractable pet tether is disclosed. The pet tether has a spiral stake. A handle is attached to the spiral stake. A tether housing is rotatably mounted on the spiral stake. The tether housing has an opening therein. A tether line is disposed in the housing and adapted for deployment from the opening in the housing. A retraction mechanism is arranged in the housing for retracting the tether line after deployment. An attachment mechanism is connected to the tether line for attaching the tether line to a pet collar.