Pipe Fitting Assembly With Hidden-Loose Tightening Indication
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
It is difficult to determine whether pipe fittings are properly tightened, leading to potential failed connections due to human error and time-consuming quality assurance reviews.
Innovation Solution
A fitting assembly with an indicator assembly that changes configuration based on the tightening state, featuring positive and negative installation indicators to visually indicate proper fastener tightening, using resilient materials like rubber or plastic to extrude or conceal indicators based on the tightening status.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If quality assurance reviews are performed to ensure proper tightening of fasteners, then connection reliability is improved, but time consumption and human error increase
Solution Approach 1:
The indicator assembly automatically indicates tightening status without requiring external inspection. The resilient indicator element self-actuates based on fastener tightening, providing visual feedback that eliminates the need for time-consuming quality assurance reviews while maintaining connection reliability.
Solution Approach 2:
The indicator assembly provides immediate visual feedback on fastener tightening status. When the fastener is properly tightened, the resilient indicator element deforms to display a visible indication, creating a closed-loop feedback system that confirms proper installation without requiring additional inspection time.
2Reliability
If quality assurance reviews are performed to ensure proper tightening of fasteners, then connection reliability is improved, but human error increases
Solution Approach 1:
The indicator assembly performs the inspection function automatically through its own mechanical response to tightening. The resilient indicator element inherently indicates whether the fastener is properly tightened, eliminating reliance on human inspectors and reducing errors associated with manual quality assurance reviews.
Solution Approach 2:
The patent replaces the mechanical human inspection process with an automated mechanical indicator system. The visual indication mechanism substitutes for human judgment and manual verification, eliminating human error while maintaining connection reliability.
3Ease of operation
If resilient indicator elements are used to provide visual indication, then ease of operation is improved, but device complexity increases
Solution Approach 1:
The indicator assembly adds complexity only in the local area where visual indication is needed, rather than redesigning the entire fastening system. The resilient indicator element and its housing are localized components that provide ease of operation at the critical inspection point without affecting the overall simplicity of the pipe fitting assembly.
Solution Approach 2:
The indicator assembly is nested within or adjacent to the existing fastener and pipe fitting structure. The resilient indicator element is contained within a housing that integrates with the pipe fitting, allowing the indication mechanism to be embedded without significantly increasing overall device complexity.
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
Provides a visual confirmation of proper fastener tightening, ensuring reliable pipe connections without the need for time-consuming quality assurance reviews and reducing human error.
Implementation Method 1
a positive installation indicator oriented within the retaining groove between the fastener opening and the first fastener portion; wherein, in the tightened configuration, the positive installation indicator is compressed between the pipe fitting and the first fastener portion and extrudes at least partially out of the retaining groove
Implementation Method 2
a negative installation indicator mounted on the fastener between the first fitting segment and the second fitting segment, the negative installation indicator slidably engaging the channel
Data Source
AI summary
A fitting assembly includes a pipe fitting comprising a first fitting segment and a second fitting segment; and an indicator assembly configurable in a loosened configuration and a tightened configuration, the indicator assembly comprising: a fastener coupling the first fitting segment to the second fitting segment; a positive installation indicator mounted on the fastener between the first fitting segment and the second fitting segment, the positive installation indicator defining a channel; and a negative installation indicator mounted on the fastener between the first fitting segment and the second fitting segment, the negative installation indicator slidably engaging the channel; wherein, in the loosened configuration, the negative installation indicator is visible, and in the tightened configuration, the positive installation indicator substantially covers the negative installation indicator and the negative installation indicator is hidden.