Female Press Fitting Indicator Ring for Crimped Joint Verification
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Solution Overview
Problem
In pipe networks, it is challenging to determine if copper press fittings have been properly crimped and if the correct sealing element is used, especially in environments with limited light, which can lead to leaks and safety hazards.
Innovation Solution
A female press fitting with a visual indicator ring (VIPR) that breaks upon crimping, providing visual confirmation of proper crimping and sealing element usage, and optionally includes color coding, photoluminescence, RFID tags, or QR codes for additional information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Difficulty of detecting and measuring
If a visual indicator system is added to press fittings to enable detection of proper crimping, then the ease of detecting and measuring crimping quality is improved, but the device complexity increases due to additional components such as color-coded rings, RFID tags, or QR codes
Solution Approach 1:
The patent applies color-coded rings that change appearance or position based on crimping status. The visual indicator system uses different colors or color patterns to indicate whether the fitting has been properly crimped, allowing immediate visual detection without complex instrumentation.
Solution Approach 2:
The patent uses RFID tags and QR codes as information carriers that encode crimping verification data. These tags provide a simplified interface for detection systems to verify proper installation by reading the encoded information, reducing the complexity of direct mechanical measurement.
2Loss of information
If color coding and visual indicators are integrated into the press fitting system to indicate sealing element characteristics and crimping status, then the loss of information about sealing element suitability is reduced, but the manufacturing precision requirements increase
Solution Approach 1:
The patent uses color-coded rings where different colors correspond to different sealing element types or characteristics. This visual encoding system preserves information about sealing element suitability without requiring complex markings or labels that would demand high manufacturing precision.
Solution Approach 2:
The visual indicators and color coding are pre-integrated into the fitting design during manufacturing. The color-coded rings and visual indicators are installed in advance with standard tolerances, eliminating the need for precise field installation while ensuring information is immediately available to the installer.
3Ease of operation
If a heat shrunk plastic ring is used as a visual indicator that breaks upon proper crimping, then the ease of operation for verifying crimping is improved, but the reliability may be affected if the ring fails to break or breaks improperly
Solution Approach 1:
The heat shrunk plastic ring changes color or breaks in a controlled manner during proper crimping, providing a clear visual signal. The material is selected to ensure it breaks at the correct force threshold, creating a reliable binary state (broken/not broken) that accurately indicates proper installation.
Solution Approach 2:
The patent controls the breaking point of the heat shrunk plastic ring by adjusting material properties and geometric parameters. The ring is designed to break at a specific force threshold that corresponds to proper crimping force, ensuring that the visual indicator only activates when the correct installation parameters are achieved.
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
Ensures easy identification of properly crimped joints and correct sealing element usage, even in low-light conditions, preventing leaks and ensuring safety by providing a visual indicator that ruptures upon proper crimping, and offering additional information through embedded tags or codes.
Implementation Method 1
the heat shrunk plastic ring is designed to break and separate from the pipe section in response to a crimping force being applied to the heat shrunk plastic ring and the at least one raised bead
Data Source
AI summary
The present invention relates to a female press fitting that is provided with a visual indicator that indicates whether the female press fitting has been properly crimped onto a male pipe or fitting.