Hygienic Process Coupling Assembly With Twist-Lock Sealing
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Solution Overview
Problem
Current hygienic process equipment connections require pins and clips for securement, which are difficult to install and pose contamination risks, and sanitary clamp style ferrules have non-hygienic external threads and clamps.
Innovation Solution
A hygienic process coupling assembly featuring a retainer with guide rails and an end cap that secure through a twisting motion, eliminating the need for pins and clips, and providing a seamless, threadless, and clamp-free connection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If pins and clips are used to hold the end cap in place, then the connection is secure, but the installation becomes difficult and contamination risk increases
Solution Approach 1:
The patent removes pins and clips from the connection system entirely. Instead of using separate fastening elements, the end cap integrates a twisting mechanism that directly engages with the fitting body, eliminating the need for additional components and simplifying installation.
Solution Approach 2:
The patent introduces a dynamic twisting motion mechanism where the end cap rotates to engage locking features. This dynamic action provides secure connection through rotational engagement rather than static pin insertion, making installation easier while maintaining reliability.
2Reliability
If pins and clips are used to secure the end cap, then the connection is reliable, but foreign object contamination risk increases
Solution Approach 1:
By removing pins and clips from the system, the patent eliminates potential foreign objects that could detach and contaminate the process fluid. The integrated twisting mechanism ensures all connection elements remain permanently attached to either the end cap or fitting body.
Solution Approach 2:
The patent merges the fastening function into the end cap structure itself through integrated twisting and locking features. This consolidation eliminates separate fastening components that could become loose contaminants, while maintaining secure connection through the unified design.
3Reliability
If threads and clamps are used on the outside of the pipe, then the connection is secure, but the external surface becomes non-hygienic
Solution Approach 1:
The patent nests all connection features including locking mechanisms and sealing surfaces within the fitting body and end cap assembly. The external pipe surface remains smooth and uninterrupted, while secure connection functions are contained within the nested structure of the coupling components.
Solution Approach 2:
The patent applies complex connection features (threads, clamps, locking mechanisms) only in the local regions where they are needed - within the fitting body and end cap - while maintaining smooth, simple external surfaces on the pipe. This localized application of complexity preserves hygienic external surfaces while ensuring secure connections.
Data Source
AI summary
Provided is a hygienic process coupling assembly that includes a retainer having a ring-shaped retainer wall with a first end configured for permanent securement to at least one of a process pipe or portion of process equipment, and a second end that includes a flange protruding radially therefrom, a plurality of guide rails with slots therebetween extending along the flange, the plurality of guide rails including a guide surface extending from a beveled guide step to a stop wall, the beveled guide step including a first ramp and a second ramp opposite the first ramp, an end cap including a head portion with a top surface and a bottom surface; a cylindrical neck portion extending down from the bottom surface; an actuation element situated along the top surface, a plurality of latching arms extending downward, and a plurality of latching fingers extending inward from the plurality of latching arms.