Multiple Plate Quick Disconnect Sandwich Fitting for Liquid Color Conduits

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Solution Overview

Problem

There is a need for a lower cost, higher reliability quick connection apparatus to connect conduits to pumps and machines for delivering liquid color in plastic molding and extrusion processes, as existing solutions are either costly or lack efficient rapid connection and disconnection capabilities.

Innovation Solution

A multiple plate quick disconnect sandwich assembly is designed, comprising a retainer, spacer, and base plate with specific arcuate openings and guides, allowing for rapid connection and disconnection of conduits by rotating a quarter turn, utilizing interlocking mechanisms to secure conduits effectively.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If conventional quick connection apparatus are used to connect conduits to pumps and machines, then connection reliability is maintained, but operational cost increases and connection speed decreases

Engineering Contradiction:
Improveconnection speedVSAvoidoperational cost
Core Design Contradiction:
ProductivityVSEase of manufacture

Solution Approach 1:

The quick connection apparatus is divided into separate modular components: a fitting with a body and a separate clamp assembly. This segmentation allows each component to be manufactured independently using cost-effective processes while enabling rapid assembly and disconnection operations, directly addressing both the productivity and manufacturing cost concerns

Inventive Principle:
Principle #1Segmentation

2Ease of operation

If existing quick connection apparatus are used, then connection functionality is provided, but connection reliability and ease of operation are insufficient

Engineering Contradiction:
Improverapid connection capabilityVSAvoidconnection reliability
Core Design Contradiction:
Ease of operationVSReliability

Solution Approach 1:

The clamp assembly incorporates a self-latching mechanism with resilient arms that automatically engage with the fitting body when the clamp is rotated into position. This self-service feature eliminates the need for additional fastening operations or tools, providing both rapid connection (ease of operation) and secure locking (reliability) simultaneously

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The clamp assembly utilizes arcuate engagement surfaces and curved resilient arms that conform to the cylindrical geometry of the fitting body. This curved geometry enables smooth rotational motion for quick connection while ensuring uniform contact and distribution of clamping forces, enhancing both operational ease and connection reliability

Inventive Principle:
Principle #14Spheroidality (Curvature)

Data Source

PatentUS9599265B2Multiple plate quick disconnect sandwich fitting
Publication Date: 2017.03.21 MAGUIRE STEPHEN B
  • US9599265B2 patent drawing
  • US9599265B2 patent drawing
  • US9599265B2 patent drawing

AI summary

A fitting allowing a quick connection and disconnection of liquid color conduits includes a quick disconnect plate assembly having three plates layered on top of each other, the top plate including guides sized to receive projections extending off structure to which the fitting is to be connected, with the middle plate including stops engaging with the same projections upon rotation of the structure.