Septic Tank Riser Ingress Assembly With Concealed Interlock Access
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Solution Overview
Problem
Conventional septic tank access devices with visible fasteners are susceptible to tampering and accidental ingress, posing safety risks and maintenance challenges.
Innovation Solution
A tamper-proof adapter flange and ingress device with hidden fasteners, positioned lower in the riser pipe, featuring interlock mechanisms and removable design, to prevent unauthorized access and facilitate safe maintenance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If conventional ingress devices with visible fasteners are installed at the top of the riser, then installation and maintenance access is easy, but the device is susceptible to tampering and unauthorized access
Solution Approach 1:
The ingress device is repositioned from the top of the riser to a lower position within the riser pipe, changing the spatial dimension of installation. This dimensional change makes the device inaccessible from above while maintaining serviceability through the pipe system, thereby resolving the contradiction between ease of access and tamper resistance
Solution Approach 2:
The fasteners are extracted from visible positions and concealed within the structure of the riser pipe assembly. The ingress device is secured through hidden attachment mechanisms integrated into the pipe walls, removing the vulnerable external fastening elements that enabled tampering while preserving installation capability
2Strength
If a large flange with multiple identical sections is used, then the structure provides adequate support and stability, but shipping container size and cost increase
Solution Approach 1:
The flange structure is segmented into multiple identical sections that can be assembled in the field. Each section is a compact, standardized component that provides partial structural support, and multiple sections are joined to form the complete circular flange assembly, distributing the structural load while minimizing individual component size for efficient shipping
Solution Approach 2:
The segmented flange sections are designed to nest within each other or stack compactly during storage and shipping. The identical sections can be arranged in a space-efficient configuration, allowing the complete flange assembly to be transported in a minimized volume while maintaining full structural capability upon assembly
Data Source
AI summary
An ingress device assembly is configured to be used with a septic tank that has a chamber and an access opening and a riser extending from the chamber. The ingress device assembly includes a connector including a flange including a first section and a second section cooperatively defining a perimeter of the connector and an inner bore configured to align with the access opening, the first section having a first interlock feature and the second section having a second interlock feature engaged with the first interlock feature; and an ingress device removably and rotatably coupled to the connector, the ingress device including a body configured to extend across at least a portion of the access opening.