Wheeled Ballistic Shield with Rollerball Base for Maneuverability
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Solution Overview
Problem
Existing bullet-proof shields are not designed for use by civilians in group settings, such as schools or offices, and lack the capability to effectively stop assault rifles and provide mobility and ease of use in defensive maneuvers.
Innovation Solution
A large, wheeled or rollerball-supported shield with a curved or flat body made of ballistic materials, featuring a cushioning pad, bullet-proof window, and adjustable handle assemblies, allowing for easy maneuverability and protection of users from gunfire, with optional features for improved side-to-side movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a large shield is used to stop assault rifles and provide coverage in group settings, then protection effectiveness is improved, but the shield becomes too heavy for manual carrying and requires wheels or rollerballs for mobility
Solution Approach 1:
The shield is divided into a main body structure and a separate wheeled base system. The ballistic protective body is mounted on a frame with wheels or rollerballs, separating the heavy protective function from the mobility function. This allows the shield to maintain its weight for effective protection while the wheeled system handles the burden of movement.
2Area of stationary object
If the shield is made large enough to stop assault rifles and cover multiple potential victims, then protective coverage is improved, but the shield becomes difficult to maneuver and requires specialized handling mechanisms
Solution Approach 1:
The shield incorporates adjustable handle assemblies that can be repositioned along the shield body. This dynamic adjustment capability allows users to optimize the handle position based on their height and preferred maneuvering style, making the large shield easier to control and more adaptable to different users and situations.
Solution Approach 2:
The wheeled or rollerball support system acts as a counterbalance mechanism, with the wheels positioned to provide stability while allowing the shield to be tilted and maneuvered. The wheel placement and structural design create a counterbalancing effect that reduces the effort required to move and position the large shield.
3Loss of time
If the shield is designed for rapid deployment in emergency situations, then response time is improved, but the shield requires complex assembly or setup procedures that delay deployment
Solution Approach 1:
The shield is designed with pre-assembled modular components including the ballistic body, wheeled base, and adjustable handles that can be quickly connected. The structural design allows for rapid assembly without requiring complex tools or procedures, enabling the shield to be deployed immediately when needed while maintaining structural integrity.
Data Source
AI summary
A shield has a rectangular body, one or more window openings, bullet-resistant glass panes in the windows, handles positioned along edges of the body on the backside, two or more rollerball bearings implemented along the lowermost edge of the body, and two wheels on axles with axes in the direction of the width of the body, the wheels positioned by brackets joined to the backside of the body proximate the lowermost edge. A user, grasping the handles, is enabled to hold the shield vertically oriented supported on the rollerball bearings and to move the shield side-to-side on the rollerball bearings, and wherein the user is further enabled to tilt the shield back toward the user, transferring support to the wheels rather than the rollerball bearings, and is then enabled to move the shield forward and backward on the ground or floor surface on the wheels.