Unitary Shielding Curtain Assembly for X-Ray Scanning Systems
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Solution Overview
Problem
Conventional X-ray shielding curtains in scanning systems are prone to misalignment, radiation leakage, and wear, leading to inefficiencies and safety concerns due to their layered construction and high friction, which can cause jams and require frequent replacement.
Innovation Solution
A shielding curtain assembly with a single, unitary body made of composite polymer material, featuring a molded-in mounting bead and flaps, which reduces friction and facilitates easy installation, removal, and replacement, while providing effective electromagnetic radiation blocking and flexibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional layered construction shielding curtains are used, then radiation shielding is provided, but misalignment and radiation leakage occur
Solution Approach 1:
The patent merges multiple separate curtain strips with individual layers into a single integrated shielding curtain assembly. The assembly includes a front layer, rear layer, and interlayer bonded together to form one cohesive unit, eliminating misalignment issues between separate strips while maintaining radiation shielding effectiveness.
2Reliability
If layered construction shielding curtains are used, then radiation blocking is achieved, but friction causes jams and wear
Solution Approach 1:
The patent employs composite material construction with a polymer-based interlayer bonding the front and rear shielding layers. This composite structure reduces friction between the curtain and conveyed items compared to conventional layered constructions, decreasing jams and wear while maintaining radiation blocking capability.
3Reliability
If conventional layered strips are used, then radiation shielding is provided, but frequent replacement is required due to wear
Solution Approach 1:
The patent combines multiple shielding layers into a single integrated assembly that is replaced as one unit. This eliminates differential wear between separate layers and simplifies replacement procedures, extending the effective service life of the shielding system while maintaining radiation protection.
4Reliability
If individual curtain strips are assembled between bars, then shielding is achieved, but assembly complexity increases
Solution Approach 1:
The patent merges the front layer, rear layer, and interlayer into a single pre-assembled unit that attaches to the scanning system as one component. This integrated approach simplifies the overall assembly structure by eliminating the need to separately position and secure multiple individual strips between bars.
5Shape
If layered construction is used, then uniform thickness is achieved, but surface texture is lost
Solution Approach 1:
The patent applies local quality by providing a smooth surface texture on the outer surfaces of the front and rear layers where items contact the curtain, while maintaining uniform thickness throughout the assembly. The interlayer provides bonding without compromising the surface quality needed to reduce friction.
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 solution enhances the throughput of packages and luggage by reducing friction and jamming, while maintaining effective radiation shielding and extending the life of the curtains through reduced wear and simplified maintenance.
Implementation Method 1
a polymer material that has a uniformly dispersed particulate material... Electromagnetic radiation emitted by an inspection system is blocked by the uniformly dispersed particulate material
Data Source
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Figure 3A
AI summary
Embodiments herein disclose a shielding curtain that is configured to block electromagnetic radiation from passing through it. The shielding curtain may be a flap portion of a larger shielding curtain or a single, unitary body that includes a single mounting bead and a plurality of flaps. The shielding curtain is formed of a polymer material that has a uniformly dispersed particulate material. Electromagnetic radiation emitted by an inspection system is blocked by the uniformly dispersed particulate material.