Telescoping Electrical Panel Lockout Device
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Solution Overview
Problem
Existing electrical panel lockout solutions are cumbersome, not universal, and pose safety risks due to their weight, conductivity, and inability to lock circuit breakers in the on position, allowing access to critical equipment and risking accidental shutdowns or electric shocks.
Innovation Solution
A lightweight, tamperproof electrical panel lockout device using telescoping PVC or metal hollow tubes that lock the panel door and cover, allowing circuit breakers to be locked in any position, and encapsulating screws to prevent panel removal, designed to fit various panels and be portable and safe near live electrical equipment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional electrical panel lockout devices are used, then circuit breakers can be locked out, but the devices are heavy and conductive which creates safety risks near live electrical equipment
Solution Approach 1:
The patent changes the material parameter from traditional conductive metals to non-conductive materials such as PVC, nylon, or other insulating materials. This parameter change eliminates the harmful conductivity effect while maintaining the structural integrity and locking functionality of the device, making it safe for use near live electrical equipment.
2Reliability
If circuit breaker lockouts are installed, then individual breakers can be locked, but the panel door cannot be closed and other breakers remain accessible
Solution Approach 1:
The patent designs a universal lockout device that performs multiple functions: it locks the panel door closed and simultaneously locks out circuit breakers. The device includes a door engagement portion that secures the panel door and a circuit breaker engagement portion that prevents breaker operation, providing comprehensive protection while maintaining ease of operation.
3Reliability
If multiple circuit breaker lockouts are used to lock out multiple breakers, then each breaker is protected, but multiple locks are needed which is cumbersome
Solution Approach 1:
The patent combines multiple locking functions into a single integrated device. The lockout mechanism includes a shackle that can engage with multiple circuit breakers simultaneously, allowing one lock to secure multiple breakers rather than requiring separate locks for each breaker, thereby reducing device complexity and improving ease of operation.
4Adaptability or versatility
If traditional lockout devices are used, then panel access is restricted, but they are not universal and require different types for different breaker sizes
Solution Approach 1:
The patent designs a universal lockout device with adjustable components that can accommodate different circuit breaker types, sizes, and configurations. The device includes adjustable arms and engagement portions that can be positioned to fit various breaker styles, eliminating the need for multiple specialized lockout devices and enhancing adaptability across different electrical panel configurations.
Data Source
AI summary
An electrical panel lockout that locks the electrical panel door closed and prevents the panel cover from being removed. Two telescoping hollow tubes extend between two panel screws. Two slots in the ends of the hollow tubes slide under the screw heads of each of the loosened panel screws. The outer hollow tube and inner hollow tube extend across the panel door keeping it locked closed. The shackle of a padlock is inserted into one of the openings of the inner hollow tube to keep the device locked in the extended position onto the panel screws. The screw heads are encapsulated by the device rendering them inaccessible and preventing the electrical panel cover from being removed. Hollow tube extension fittings can be employed to increase the length of the device for use on electrical panels of larger widths. A guide screw attached to the inner hollow tube rides in a slot in the outer hollow tube to keep both tubes from separating.