Compact Dual Feeder Bucket for Motor Control Centers
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Solution Overview
Problem
There is a need for alternate bucket assembly configurations in motor control centers that efficiently manage dual feeders with compact designs, allowing for easy installation and operation while maintaining electrical safety and efficiency.
Innovation Solution
The design includes a compact dual feeder bucket assembly with two external handles, each attached to an inwardly extending shaft, with one feeder positioned closer to the front than the other, allowing for efficient conductor routing and operation mechanisms that translate rotary motion into linear motion for circuit breaker control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If dual feeders are positioned side-by-side in a conventional bucket assembly, then both feeders can be accessed and operated, but the bucket assembly width increases and compactness is reduced
Solution Approach 1:
The patent transitions from a conventional side-by-side lateral arrangement of dual feeders to an offset front-to-back arrangement within the same lateral footprint. The first feeder is positioned laterally spaced from the second feeder, while the second feeder is offset in the front-to-back direction, allowing both feeders to be accessed through the front door without increasing bucket width
Solution Approach 2:
The patent employs asymmetric positioning where the first and second feeders are not symmetrically arranged side-by-side, but rather asymmetrically positioned with lateral spacing combined with front-to-back offset. This asymmetric configuration optimizes space utilization and maintains compact dimensions while preserving operational accessibility
2Volume of moving object
If feeders are positioned closer together to reduce width, then compactness is improved, but conductor routing becomes more difficult
Solution Approach 1:
The patent resolves conductor routing challenges by utilizing the front-to-back dimension for conductor pathways. Conductors can route behind the first feeder to reach the second feeder, or through designated conduits in the bucket structure, eliminating the need for excessive lateral spacing while maintaining manufacturing feasibility
Solution Approach 2:
The patent introduces intermediary elements such as conduits and routing pathways integrated into the bucket structure that facilitate conductor routing between the offset feeders. These intermediary structures provide protected and organized conductor pathways that simplify installation while maintaining compact dimensions
3Volume of moving object
If one feeder is offset from the other in the front-to-back direction, then compactness and conductor routing are improved, but the shaft lengths become unequal requiring different handle mechanisms
Solution Approach 1:
The patent applies local quality by allowing different shaft configurations for different feeders based on their specific positioning requirements. The first shaft and second shaft can have different lengths and mounting characteristics tailored to their respective feeder positions, optimizing each local configuration for its specific function while maintaining overall system compactness
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This configuration enables compact and efficient motor control center units with improved conductor routing and operational safety, allowing for easy installation and maintenance while maintaining electrical efficiency and safety standards.
Implementation Method 1
The handle can be a rotary handle configured to convert the rotary motion of the rotary handle to the linear or translational motion of a circuit breaker linear action lever
Data Source
AI summary
Dual starters and/or feeders are positioned in a unit housing to be offset from one another in a front to back direction to provide a compact configuration for a MCC cabinet. The dual starters or feeders can communicate with a respective external handle attached to an inwardly oriented shaft. The handles can be rotary handles that connect to a respective gear assembly that transforms rotational input to linear input.