Push-Fit Pipe Fitting With Visual Seating Confirmation
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Solution Overview
Problem
Push-fit pipe fittings lack a clear indication of correct pipe seating and torquing, leading to potential pipe bursting under pressure due to incomplete insertion or improper assembly.
Innovation Solution
A push-fit pipe fitting design incorporating a locking nut, compression fitting, locking ring, inner body, and main body with visual or physical indicators to signal correct pipe retention, ensuring proper seating and assembly through indicator windows and special tool requirements for disassembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If no indicator is provided on the push-fit fitting, then the device complexity is reduced, but the user cannot determine if the pipe is correctly seated, leading to potential pipe bursting under pressure
Solution Approach 1:
The patent applies color change indicators on the push-fit fitting body that change color or become visible when the pipe is correctly seated. This visual feedback mechanism allows users to confirm proper installation without adding complex mechanical indicator systems, thereby improving reliability while minimizing device complexity
Solution Approach 2:
The fitting provides self-indicating features that automatically show installation status without requiring additional tools or complex mechanisms. The indicator system is integrated into the fitting structure itself, allowing the device to inform the user of correct seating through its own built-in visual cues
2Ease of operation
If the user pushes the pipe down until unable to push further, then installation is simple, but the pipe may still not be inserted deep enough and burst out when pressurized
Solution Approach 1:
The patent incorporates visual feedback indicators that provide real-time information to the user during pipe insertion. The indicators show whether the pipe has reached the correct seating depth, giving immediate feedback that confirms proper installation and prevents under-insertion even though the operation remains simple
3Measurement precision
If marking is used on the pipe to indicate depth, then the user can determine correct depth, but the user still cannot determine if the fitting has been correctly torqued down
Solution Approach 1:
The patent integrates multiple indicator functions into a single fitting system. The same indicator mechanism that shows pipe depth also indicates whether the fitting has been correctly torqued down, providing comprehensive assembly status information without requiring separate marking systems or additional components
4Reliability
If no visual indicator is provided, then the device complexity is lower, but the user is unable to determine when the pipe is correctly seated, potentially causing pipe bursting
Solution Approach 1:
The patent uses color-changing or color-coded indicators that provide clear visual confirmation of correct assembly. These indicators are integrated into the fitting structure and change appearance based on installation status, improving reliability through enhanced visibility while maintaining relatively simple device architecture
Solution Approach 2:
The patent adds a visual dimension to the installation confirmation process by incorporating indicators that provide information through color or visual appearance rather than requiring complex mechanical measurement systems. This transforms the confirmation method from a multi-dimensional mechanical problem into a simpler visual observation
Data Source
AI summary
A push-fit type fitting that can be used to connect a pipe to either another pipe or a variety of other fittings. The fitting includes a visual indicator that provides a visual confirmation to the user once the pipe has been correctly retained in the device.