Barrel Lock Key Disabling Mechanism for Utility Security
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In the utility industry, the widespread use of barrel locks with common key designs leads to issues of lost, stolen, or copied keys, resulting in unauthorized access to utility meters and infrastructure due to the proliferation of keys among numerous personnel.
Innovation Solution
A cylindrical barrel lock with a key disabling device that captures, damages, or defaces unauthorized keys by using locking balls and bait devices within the inner shaft, preventing unauthorized access while maintaining a traditional appearance to deceive potential users.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If traditional barrel locks with common key designs are used for widespread deployment, then ease of operation and manufacturing are improved, but security deteriorates due to key proliferation and unauthorized access
Solution Approach 1:
The lock mechanism performs preliminary actions by positioning locking balls into blocking positions before unauthorized access can occur. The key disabling device is pre-positioned within the inner shaft to automatically engage with and disable any key inserted into the aperture, preventing unauthorized operation before it can take place.
Solution Approach 2:
The invention converts the harmful effect of key proliferation into a benefit by using the inserted key itself as the disabling mechanism. When a key is inserted (whether authorized or unauthorized), the key disabling device engages with it to prevent rotation, thereby neutralizing the security threat while maintaining the appearance of traditional lock operation.
2Reliability
If key disabling devices are added to barrel locks to prevent unauthorized access, then security is improved, but device complexity increases
Solution Approach 1:
The key disabling device is merged with the existing lock structure by positioning it within the inner shaft and integrating it with the locking mechanism. The locking balls serve dual purposes: they are part of the traditional locking mechanism and simultaneously function as the disabling element when positioned to block key rotation, thereby reducing overall complexity.
Solution Approach 2:
The locking balls serve multiple functions: they enable the traditional locking/unlocking operation when in the first position, and they simultaneously serve as the disabling mechanism when positioned in the second position to block key rotation. This multi-functionality eliminates the need for separate disabling components, maintaining simplicity.
3Reliability
If locking balls are positioned to block key rotation, then unauthorized access is prevented, but ease of operation deteriorates for legitimate users
Solution Approach 1:
The locking balls are designed to be dynamically positionable between two states: a first position where they allow key rotation for authorized operation, and a second position where they block key rotation to prevent unauthorized access. The locking mechanism enables authorized users to switch between these states as needed.
Solution Approach 2:
The locking mechanism provides feedback control by allowing authorized users to observe the lock state and manually reposition the locking balls to the appropriate position. When a key is properly inserted and turned, the mechanism provides tactile feedback that confirms authorization, allowing the user to then position the locking balls to block further rotation if needed.
Data Source
AI summary
Disclosed are various embodiments of locking systems that include a barrel lock. The barrel lock is configured to damage, deface, and/or capture a key that is inserted into the barrel lock. Additionally, some embodiments include a locking mechanism adapter that can allow the locking mechanism to be operated by a key if the user has knowledge about the properties of the barrel lock.