Pipe Coupling Installation Indicator for Tightening Verification
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Solution Overview
Problem
Existing pipe couplings face challenges in ensuring proper tightening, leading to unreliable seals and potential separation of pipe sections due to human error and time-consuming quality assurance processes.
Innovation Solution
A pipe coupling with integrated installation indicators that visually confirm proper tightening by being clamped between coupling segments when the desired torque is achieved, providing a clear indication of a suitable seal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If quality assurance reviews are conducted to ensure proper tightening of fasteners, then connection reliability is improved, but installation time and complexity increase
Solution Approach 1:
The installation indicator automatically provides visual feedback about tightening status without requiring external inspection. The indicator element is clamped between coupling segments when proper torque is achieved, self-verifying the connection quality and eliminating the need for separate quality assurance reviews
Solution Approach 2:
The patent implements a visual feedback mechanism where the installation indicator changes state (becomes clamped or visible) to communicate the tightening status to the installer. This immediate feedback allows operators to verify proper installation without additional inspection steps, resolving the contradiction between reliability verification and installation time
2Reliability
If quality assurance reviews are conducted to ensure proper tightening, then connection reliability is improved, but human error increases due to manual inspection limitations
Solution Approach 1:
The system eliminates manual inspection by implementing self-verifying indicators that automatically display tightening status. The indicator elements are designed to be clamped between coupling segments when proper torque is achieved, providing objective verification without human intervention and eliminating inspection errors
Solution Approach 2:
The patent employs visual indicators that provide clear, unambiguous signals about tightening status. The indicator elements become visible or change position to indicate proper installation, creating a simple binary state that eliminates the subjectivity and error-proneness of manual quality assurance reviews
3Strength
If fasteners are tightened to desired torque to ensure reliable seal, then connection strength is improved, but difficulty in verifying proper tightening increases
Solution Approach 1:
The installation indicator provides immediate visual feedback about tightening status. When the fastener is tightened to the desired torque, the indicator element becomes clamped between coupling segments or assumes a visible position, making it easy to verify proper tightening without complex measurement tools
Solution Approach 2:
The patent replaces complex torque measurement and verification systems with a simple mechanical indicator mechanism. The indicator element responds to the tightening force through direct mechanical action (being clamped or moving into position), providing intuitive verification without requiring torque wrenches, gauges, or sophisticated measurement equipment
Data Source
AI summary
A pipe coupling includes a coupling body comprising a first coupling segment and a second coupling segment, each of the first and second coupling segments defining a first end and a second end opposite the first end; a fastener mounted to the coupling body and configured to tighten the pipe coupling from an untightened configuration to a tightened configuration; and an installation indicator arranged between the first end of the first coupling segment and the first end of the second coupling segment, wherein the installation indicator is clamped between the first and second coupling segments in the tightened configuration.