Coupling Installation Tool for Pipe Alignment
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Solution Overview
Problem
Existing plumbing coupling installation methods often result in improper centering, leading to leaks and damage due to tight tolerances and burrs, especially in electrofusion applications, where manual hammering with wooden blocks is inefficient and hazardous.
Innovation Solution
A tool with an open cuff that conforms to the pipe exterior and seats on the coupling annulus, distributing force over a larger area to uniformly advance the coupling, minimizing damage and repositioning needs, featuring a support structure and optional lip for balanced striking.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a wooden block is used to hammer the coupling into place, then the coupling can be advanced, but the coupling may skew and require frequent repositioning of the block
Solution Approach 1:
The patent introduces a specialized tool as an intermediary between the hammer and the coupling. This tool features a curved surface that conforms to the coupling's annulus, allowing the hammer force to be applied uniformly across the coupling's outer surface, preventing skewing and ensuring proper centering during installation.
Solution Approach 2:
The tool's curved surface is specifically designed to match the local geometry of the coupling's annulus. This localized conformality ensures that force is distributed evenly across the contact area, preventing the coupling from skewing while maintaining proper alignment with the pipe seam.
2Productivity
If the installer hits the coupling with a hammer and wooden block, then the coupling advances, but damage may occur to the fitting and connection integrity
Solution Approach 1:
The specialized tool serves as a mediator that transfers hammer force to the coupling in a controlled manner. The tool's curved surface distributes the impact force evenly across the coupling's annulus, preventing localized damage while still advancing the coupling efficiently. This protects the connection integrity between pipes and coupling.
Solution Approach 2:
The tool acts as a cushioning element between the hammer and the coupling. By distributing the impact force across a larger surface area through its curved geometry, the tool cushions the coupling from concentrated impact damage while still enabling efficient advancement.
3Manufacturing precision
If the installer manually positions the wooden block about the circumference of the fitting, then the coupling can be squared, but time is wasted and safety hazards arise
Solution Approach 1:
The tool is designed to be self-aligning through its curved surface that conforms to the coupling's annulus. When placed on the coupling, the tool's geometry automatically guides the hammer strikes to the correct location, eliminating the need for the installer to manually reposition the block around the circumference to square the coupling.
4Manufacturing precision
If tight tolerances exist between coupling inner diameter and pipe outer diameter, then proper fitting is achieved, but positioning becomes difficult due to burrs and tight clearance
Solution Approach 1:
The tool serves as an intermediary that facilitates positioning in tight clearance conditions. By providing a conforming curved surface that contacts the coupling's outer annulus, the tool allows the installer to apply force evenly without the coupling binding on burrs or in tight clearances, making positioning easier despite tight tolerances.
Data Source
AI summary
A method and apparatus for advancing a coupling along a length of pipe. The apparatus or tool is designed to sit on a segment of the pipe's outer circumference, adjacent to the coupling edge. The tool is repeatedly struck with a hammer or mallet and the force from each strike is transferred from the tool to the coupling, advancing that coupling along the pipe length until it is in the proper position. The tool geometry conforms to a portion of the pipe's exterior surface contour as well as the edge of the coupling, increasing the efficiency of the tool and minimizing damage to the fitting and pipes.