Anti-siphon Installation Assembly for Fuel Filler Neck
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Solution Overview
Problem
Installing an anti-siphon device into a fuel tank's fuel filler neck is challenging when the device's outer diameter is smaller than the filler neck's inner diameter, making it difficult to prevent fuel siphoning effectively.
Innovation Solution
An anti-siphon installation assembly comprising a retainer clip with a cone point set screw, a locator clip, and a spring that allows for secure positioning and retention of the anti-siphon device within the fuel filler neck, using a combination of compression and friction to facilitate easy installation and secure the device in place.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the anti-siphon device is designed with a smaller outer diameter to fit within the fuel filler neck, then the device can be installed in the fuel tank, but the device becomes difficult to install securely when its outer diameter is smaller than the inner diameter of the fuel filler neck
Solution Approach 1:
The patent introduces an installation assembly as an intermediary tool that includes a retainer clip, locator clip, and spring. This assembly temporarily bridges the size gap between the small anti-siphon device and the fuel filler neck, enabling secure installation. The retainer clip holds the device during installation, while the spring provides expansion force to engage the assembly with the filler neck walls.
Solution Approach 2:
The installation assembly is divided into separate functional components: a retainer clip for holding the anti-siphon device, a locator clip for positioning, and a spring for providing expansion force. This segmentation allows each component to perform its specific function efficiently, making the overall installation process manageable despite the size mismatch.
2Ease of manufacture
If a simple anti-siphon device is used, then the device is easy to manufacture, but the device lacks the structural complexity needed to secure it firmly within the fuel filler neck
Solution Approach 1:
The patent combines multiple functions into a single installation assembly: the retainer clip holds the anti-siphon device, the locator clip positions it correctly, and the spring provides the necessary expansion force. This merging of functions into one integrated assembly maintains the simplicity of the anti-siphon device itself while achieving reliable installation through the combined action of its components.
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 assembly enables straightforward and secure installation of the anti-siphon device, preventing fuel siphoning by utilizing a spring to compress the retainer clips into position and securing them with a cone point set screw, ensuring the anti-siphon device is effectively retained within the fuel filler neck.
Implementation Method 1
utilizing a spring to compress the retainer clips into position
Implementation Method 2
securing them with a cone point set screw, ensuring the anti-siphon device is effectively retained
Data Source
AI summary
An anti-siphon installation assembly includes a spring, a retainer clip mounted on the spring, the retainer clip including a support surface adapted to support an anti-siphon device thereon, and a locator clip mounted on the spring, the locator clip including an outwardly extending arm adapted to contact the upper surface of a fuel filler neck opening.