Secure Fire Hydrant Cap With Rotating Outer Body
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Solution Overview
Problem
Conventional locking devices for threaded elements are vulnerable to abuse and can be easily defeated by applying overwhelming force, as they are rigidly secured and lack effective security measures.
Innovation Solution
A security device comprising an inner body and an outer body with a movable pin that changes positions between extended and retracted states, allowing the outer body to move relative to the inner body when secured, and coupling both bodies for simultaneous movement when unsecured, using a lock to engage the pin and facilitate secure and easy access.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If conventional locking devices are rigidly secured to the threaded element, then they provide stable attachment, but they become vulnerable to abuse and can be easily defeated by applying overwhelming force
Solution Approach 1:
The locking device transitions from a static rigid connection to a dynamic system where the outer body can rotate independently of the inner body when secured. The pin mechanism allows controlled movement - the outer body rotates freely relative to the inner body in the secured state, but both bodies move simultaneously when unsecured, creating a dynamic response to applied forces that prevents straightforward defeat by overwhelming force
Solution Approach 2:
The locking device is divided into separate functional components: an inner body that engages the threaded element, an outer body that provides the secured state, and a pin mechanism that controls the transition between states. This segmentation allows each component to perform its specific function - the inner body provides stable attachment while the outer body provides security, and they work together through the pin mechanism rather than being rigidly connected
Data Source
AI summary
A security device for engaging a threaded element includes an inner body configured to engage the threaded element and an outer body operatively coupled to the inner body. A pin is operatively coupled to the inner body and movable between an extended position and a retracted position such that the outer body moves relative to the inner body when the pin is disposed in the retracted position and the outer body and the inner body are operatively coupled for simultaneous movement when the pin is disposed in the extended position.