Meter Sealing Ring Lock Assembly for Keyless Relocking
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Solution Overview
Problem
Existing lock systems for utility service enclosures, such as meter sealing rings, require multiple components to be handled simultaneously during installation and often necessitate the use of keys for reengagement, leading to operator inconvenience and increased complexity.
Innovation Solution
A lock assembly with a retaining sleeve that includes an aperture, radial groove, and captive shoulder, allowing the lock to be preloaded onto the sealing ring without a key, ensuring it remains secured after disengagement and facilitating easy relocking without additional tools.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a separate plunger type lock is used that must be in the unlocked position prior to installation, then the lock can be installed on the sealing ring, but operator inconvenience occurs due to the need to handle multiple components simultaneously
Solution Approach 1:
The lock and retaining sleeve are combined into a single integrated assembly where the retaining sleeve is permanently attached to the lock shaft. This merging eliminates the need to handle separate lock and retaining components simultaneously, allowing the entire assembly to be installed as one unit while maintaining all locking functions.
Solution Approach 2:
The retaining sleeve is pre-installed onto the lock shaft during manufacturing, so that when the lock assembly is installed on the sealing ring, the retaining sleeve is already in position to prevent separation. This preliminary action eliminates the need for operators to manually position multiple components during installation.
2Adaptability or versatility
If the lock is separate from the sealing ring before installation, then the lock can be installed, but the lock will separate from the apertures or confines of the sealing ring when removed, forcing the ring installer to handle multiple components simultaneously again
Solution Approach 1:
The lock and retaining sleeve are merged into a single assembly that remains connected throughout installation, removal, and reinstallation cycles. The retaining sleeve permanently attached to the lock shaft ensures the lock cannot separate from the sealing ring apertures, eliminating the need to handle multiple components during reinstallation while maintaining full adaptability for repeated use.
3Reliability
If a key is required to reengage the lock, then the lock can be secured, but operator inconvenience and increased complexity occur
Solution Approach 1:
The locking mechanism is designed to be self-servicing through the retaining sleeve that automatically retains the lock on the sealing ring apertures when the lock is in the engaged position. The spring-loaded plunger automatically engages with the locking surface when pressure is applied, eliminating the need for keys or additional tools while maintaining secure locking through the automatic engagement mechanism.
Data Source
AI summary
An apparatus for securing first and second ends of a meter sealing ring, the meter sealing ring adapted for use in installing a meter to a watthour meter box. The apparatus comprises a lock having a head member and a shank portion comprising moveable locking members, the shank portion being insertable through an aperture formed in the first end of the sealing ring. The apparatus further comprises at least a retaining sleeve adapted to capture the shank portion, wherein the lock is retained on the first end of the sealing ring.