Utility Meter Seal Assembly Post-Molding Wire Insertion

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Solution Overview

Problem

Current seal assemblies for utility meters, which involve insert molding a stainless steel wire, are complex and costly, leading to reduced production capacity.

Innovation Solution

Assembling the stainless steel wire with the seal assembly and utility meter after molding, using a male and female component with a flexible rib and self-locking anchors, to provide a tamper indication feature without the need for insert molding.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If insert molding a stainless steel wire is used in the seal assembly, then the tamper indication feature is provided, but the manufacturing complexity increases and production capacity is reduced

Engineering Contradiction:
Improvetamper indication featureVSAvoidmanufacturing complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The seal assembly is divided into separate components: the molded seal body and the stainless steel wire are manufactured independently and then assembled together. This segmentation eliminates the need for complex insert molding while maintaining the tamper indication functionality, as the wire can be separately inserted through the molded seal body after production.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The seal body is molded first without the wire inserted, allowing for simpler and faster production. The wire is then added in a subsequent assembly step, separating the molding process from the wire insertion process. This preliminary action of molding the seal body alone reduces manufacturing complexity and increases production capacity.

Inventive Principle:
Principle #10Preliminary action

2Reliability

If insert molding a stainless steel wire is used in the seal assembly, then the tamper indication feature is provided, but the manufacturing cost increases

Engineering Contradiction:
Improvetamper indication featureVSAvoidmanufacturing cost
Core Design Contradiction:
ReliabilityVSEase of manufacture

Solution Approach 1:

By separating the seal body production from the wire insertion process, each component can be manufactured using optimized, simpler processes. The seal body is molded without requiring wire insertion equipment, and the wire is added using basic assembly operations, reducing overall manufacturing cost compared to expensive insert molding equipment and processes.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The seal body is molded first in a standard molding process without the complexity of insert molding. The wire is then added in a separate, simpler assembly step. This two-stage approach uses less expensive equipment and processes for each stage compared to performing both operations simultaneously through insert molding.

Inventive Principle:
Principle #10Preliminary action

3Reliability

If insert molding a stainless steel wire is used in the seal assembly, then the tamper indication feature is provided, but the production capacity is reduced

Engineering Contradiction:
Improvetamper indication featureVSAvoidproduction capacity
Core Design Contradiction:
ReliabilityVSProductivity

Solution Approach 1:

The manufacturing process is segmented into independent stages: seal body molding and wire assembly. This allows parallel production of seal bodies and wires, and enables faster cycle times for the molding operation since wire insertion is not required during molding. The assembly step can be performed efficiently after molding, increasing overall production capacity.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The seal body is molded in advance without the time-consuming wire insertion step. This preliminary molding action can be performed rapidly using standard injection molding cycles. The wire is then added in a subsequent assembly operation, allowing the molding process to proceed at full speed without waiting for wire insertion, thereby increasing production capacity.

Inventive Principle:
Principle #10Preliminary action

Data Source

PatentUS11594153B2Seal assembly for utility meter and associated methods
Publication Date: 2023.02.28 LANDIS GYR TECH INC
  • US11594153B2 patent drawing
  • US11594153B2 patent drawing
  • US11594153B2 patent drawing

AI summary

Disclosed is a seal assembly for a utility meter enclosure. The seal assembly secures together a front cover and a base of the utility meter enclosure in a way that requires breaking of the seal assembly in order to open the utility meter enclosure. As such, the seal assembly provides an indication if the utility meter enclosure has been opened or tampered with.