Adjustable Landscape Timber Edging With Plastic Ground Spikes
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Solution Overview
Problem
The existing landscape timber systems face challenges with high steel spike costs, rigidity issues when encountering natural obstacles, rusting, and the inability to adjust timber lengths without cutting, which increases installation time and costs.
Innovation Solution
The introduction of molded plastic spikes with radially spaced wings for increased flexibility and an adjustable length adapter that allows for elongation or shortening of landscape timbers without cutting, providing a flush appearance and reducing manufacturing and shipping costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If steel spikes are used to secure landscape timbers, then the spikes are strong enough to drive through natural obstacles without dulling, but the cost of steel spikes increases proportionally with steel import availability decrease
Solution Approach 1:
The patent changes the material parameter from steel to plastic, fundamentally altering the properties of the spike. This substitution reduces manufacturing cost and weight while maintaining sufficient strength through optimized geometry. The plastic spike achieves adequate performance by changing material composition rather than relying on expensive steel.
Solution Approach 2:
The patent employs composite construction by combining plastic material with strategically positioned radial wings. These wings provide enhanced ground engagement and distribution of driving forces, compensating for the lower inherent strength of plastic compared to steel. The composite design of plastic body with reinforced wing structures achieves cost-effectiveness while maintaining functional strength.
2Stability of the object's composition
If steel spikes are used to secure landscape timbers, then the spikes maintain rigidity to resist torsional force, but the spikes are not flexible enough to deform around rocks and other solids in the ground
Solution Approach 1:
The patent utilizes the inherent flexibility of plastic material to create a spike that can deform around obstacles in the ground. Unlike rigid steel, the plastic spike can bend and conform to irregular surfaces, allowing it to navigate around rocks and roots while maintaining its structural integrity and driving function.
Solution Approach 2:
The patent introduces dynamic characteristics to the spike by allowing it to flex and adapt during the driving process. The plastic material enables the spike to change its shape temporarily when encountering obstacles, then return to its original form, providing both flexibility for adaptation and sufficient rigidity for maintaining composition stability.
3Strength
If steel spikes are used to secure landscape timbers, then the spikes are strong enough to be hammered through the earth, but the spikes are relatively heavy increasing transportation costs
Solution Approach 1:
The patent adopts a disposable approach by using plastic spikes that are inexpensive to manufacture and replace. Rather than investing in heavy, expensive steel spikes that require significant transportation costs, the plastic spikes can be easily transported and replaced if needed, reducing the economic burden of weight-related transportation expenses.
Solution Approach 2:
The patent fundamentally changes the material parameter from dense steel to lighter plastic, dramatically reducing the weight of the spikes. This parameter change maintains sufficient strength for the application while eliminating the transportation cost penalty associated with heavy steel materials.
4Ease of operation
If steel spikes are used to secure landscape timbers, then the spikes can be driven into the ground effectively, but the spikes are prone to rusting when exposed to environmental factors
Solution Approach 1:
The patent changes the material parameter from metal to plastic, fundamentally altering the chemical properties of the spike. Plastic is inherently resistant to corrosion and rust, eliminating the reliability problem associated with steel spikes exposed to environmental factors while maintaining ease of operation during installation.
5Adaptability or versatility
If landscape timber length is adjusted by cutting, then the timber can be shortened to conform to environments, but it is difficult to produce an aesthetic straight edge when cutting through the irregular shape
Solution Approach 1:
The patent extracts the adjustment function from the timber itself by using separate adapter components. Instead of cutting the timber to achieve length adjustment, adapters are attached to the timber ends, allowing length modification without compromising the aesthetic quality of the timber edges. This separation of functions preserves the visual integrity of the timber while providing adaptability.
Solution Approach 2:
The patent divides the timber system into modular components including adapters that can be attached to adjust the effective length. This segmentation allows the timber to remain intact with its aesthetic edges while the adapter components provide the necessary length adjustments to conform to different environmental requirements.
6Force
If steel spikes are used to secure landscape timbers, then the spikes provide sufficient securing force, but the transportation costs associated with steel spikes are proportional to the weight of the product being shipped
Solution Approach 1:
The patent changes the material parameter from steel to plastic, reducing the density and weight of the spikes. This parameter change maintains sufficient securing force through optimized geometry and ground engagement features while dramatically reducing transportation costs associated with moving the spikes to installation sites.
Data Source
AI summary
An improved landscape timber system including a spike and an adjustable length adapter. In one embodiment of the adjustable length adapter, the adjustable length adapter has one end that is configured to receive an end portion of the landscape timber body for changing the overall length, shortening or elongating, of a landscape timber. Once the adjustable length adapter is fitted onto the landscape timber an aesthetic edge is produced. In one embodiment of the spike, the spike has an adjustable length adapter with a first end, an opposite end, and a plurality of equally radially spaced wings forming an elongated body. The opposite end defines a pointed end for driving into the earth, where the wings of the adjustable length adapter converge toward a common point. The radially spaced wings define a polygonal configuration for improved rigidity of the spike and pointed end.