Plumbing Vent Test Cap Removal Using UAV Remote Retrieval

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Solution Overview

Problem

Existing plumbing vent pipe test cap systems require manual removal post-inspection, often necessitating roof access, which is hazardous and inefficient, especially in inclement weather, and can lead to ventilation issues and safety violations.

Innovation Solution

A remote-controlled system utilizing an unmanned aerial vehicle (UAV) equipped with a tool, such as a hook or actuator, and a locating device like an NFC chip, to remove the test seal part from the vent pipe without human intervention, allowing for safe and efficient post-inspection ventilation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If manual removal of test caps is used, then the test cap can be removed, but roof access is required which creates safety hazards and inefficiency

Engineering Contradiction:
Improvetest cap removalVSAvoidsafety hazards from roof access
Core Design Contradiction:
Ease of operationVSObject-affected harmful factors

Solution Approach 1:

A remote retrieval system acts as an intermediary between the operator and the test cap. The system uses a long-reach tool that can be operated from ground level to engage and remove the test cap from the roof-mounted vent pipe, eliminating the need for direct roof access while maintaining effective test cap removal capability

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The patent replaces the manual mechanical system of climbing the roof with a remote mechanical retrieval system. The retrieval tool uses a long handle or telescoping mechanism that allows the operator to apply leverage and force to remove the test cap from a safe distance, substituting dangerous manual roof work with ground-based mechanical advantage

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

2Reliability

If test caps are made visible from ground level, then inspection compliance is improved, but the cap design becomes more complex

Engineering Contradiction:
Improveinspection complianceVSAvoidcap design
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The test cap incorporates high-visibility color markings or reflective surfaces that make it easily distinguishable from the roof environment when viewed from ground level. This allows inspectors to verify the presence or removal status of the test cap without approaching the roof, maintaining compliance reliability while using simple visual indicators rather than complex mechanical or electronic systems

Inventive Principle:
Principle #32Color changes

3Object-affected harmful factors

If remote retrieval system is used, then safety risks are reduced, but device complexity increases

Engineering Contradiction:
Improvesafety risksVSAvoidretrieval system
Core Design Contradiction:
Object-affected harmful factorsVSDevice complexity

Solution Approach 1:

The retrieval system is divided into separate functional components: a long-reach engagement tool, an optional telescoping extension, and a retrieval mechanism. This segmentation allows the system to achieve safe remote operation through modular components rather than a single complex integrated device, making each component relatively simple and easy to manufacture

Inventive Principle:
Principle #1Segmentation

Data Source

PatentUS11685525B2Plumbing vent cap remote removal system
Publication Date: 2023.06.27 TESTCAP LLC
  • US11685525B2 patent drawing
  • US11685525B2 patent drawing
  • US11685525B2 patent drawing

AI summary

A system, method and apparatus for removing a test seal part from a vent positioned on a roof of a structure and being removable without requiring a person on site to accomplish the same includes a test seal part having a surface for connection enabling removal, wherein the seal part removably sealably connects to the plumbing vent pipe, and a remote controlled apparatus and/or remote controller directly or indirectly removes the test seal part. The remote controlled apparatus can includes an unmanned aerial vehicle (UAV) or a powered actuator having a receiver operably disposed adjacent the seal part in manner to actuate the seal part out of sealable connection with the vent pipe.