Inflatable Blocking Device with Transferable Marker for Manhole Security
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Solution Overview
Problem
The increasing problem of unauthorized access and theft in restricted areas, such as manholes, due to damaged or removed protective coverings, poses a significant threat to safety and infrastructure security, with existing deterrents and detection methods being inadequate.
Innovation Solution
A security apparatus comprising a formable bag with a marker layer and a secure valve system that inflates and conforms to the shape of access passages, providing a physical barrier and marking any unauthorized access attempts, combined with a support brace for enhanced stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If protective coverings are removed or damaged, then access to restricted areas becomes possible, but safety hazards and theft risks increase
Solution Approach 1:
The patent applies preliminary action by pre-installing blocking devices in restricted areas before any unauthorized access attempts occur. These devices remain dormant until triggered, at which point they automatically inflate to block access and apply marker composition to potential intruders. This pre-positioning ensures immediate response capability while maintaining normal access during legitimate operations.
Solution Approach 2:
The patent converts the harmful factor of unauthorized access into a beneficial marking function. When someone attempts to breach the blocking device, the marker composition is transferred to their clothing or skin, providing both deterrence through visible marking and identification capability for law enforcement. The harmful intrusion attempt becomes the trigger for the beneficial marking and detection function.
2Reliability
If blocking devices are installed in restricted areas, then unauthorized access is deterred, but device complexity increases
Solution Approach 1:
The blocking device is segmented into functionally independent modules: an inflatable bag for physical blocking, a marker composition system for identification, and a trigger mechanism for activation. Each module performs its specific function independently, allowing for simplified design, easier manufacturing, and reduced overall system complexity while maintaining high security effectiveness.
Solution Approach 2:
The patent employs a flexible inflatable bag as the primary blocking element. This thin-walled structure can be collapsed for easy installation and storage, then inflated to create an effective physical barrier. The flexibility allows the bag to adapt to various access point geometries while maintaining structural integrity, reducing the need for complex rigid frameworks.
3Measurement precision
If marker composition is applied to intruders, then identification capability is improved, but ease of operation deteriorates due to transfer requirements
Solution Approach 1:
The marker composition system operates on a self-service principle where the intruder themselves applies the marker to their own clothing or skin during the attempted breach. The blocking device simply provides the marker material and the mechanism for transfer, eliminating the need for external application systems, operators, or complex delivery mechanisms. This dramatically simplifies the overall system while ensuring reliable marking.
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
Effectively prevents unauthorized access by creating a rigid barrier and marking any attempts to breach the area, thereby deterring theft and reducing safety hazards while allowing authorized access.
Implementation Method 1
a marker layer comprising a transferable marker composition
Implementation Method 2
a valve for inflation and deflation of the bag
Data Source
AI summary
Disclosed herein is a security apparatus comprising a blocking device having a formable bag and a marker layer including a transferable marker composition that can be transferred onto any object penetrating the marker layer and any other object or person coming into contact with the marker composition in the event of an attempt to remove the blocking device by puncturing the bag. The blocking device may block an access point such as a manhole to block unauthorized access. The formable bag may be made to conform to the shape of an access passage by inflation or deflation using valve.