Threaded PVC Pipe Coupling for Lateral Strength and Compatibility
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Solution Overview
Problem
Existing water well systems face compatibility issues when transitioning from traditional non-threaded or male-threaded drop pipes to male/female threaded drop pipes, requiring complete line replacement, which is costly and unnecessary for partial section replacements.
Innovation Solution
A coupling design with a lead-in section and internal threads allows for the connection of non-threaded and male-threaded drop pipes to male/female threaded drop pipes, providing a watertight seal and lateral strength without necessitating entire line replacement, featuring a non-threaded lead-in section for alignment and internal threads for engagement, along with a second female end for additional lateral support.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If traditional non-threaded or male-threaded drop pipes are used, then compatibility with existing systems is maintained, but the ability to provide lateral strength and resist leakage is insufficient
Solution Approach 1:
The coupling is designed with dual functionality: one end has internal threads to connect to male-threaded drop pipes, while the other end has a smooth bore to connect to non-threaded drop pipes. This universal design allows the same coupling to work with both threaded and non-threaded pipe types, enabling lateral strength reinforcement without requiring complete system conversion.
Solution Approach 2:
The coupling acts as an intermediary component between male/female threaded drop pipes and traditional non-threaded or male-threaded drop pipes. By introducing this intermediate element, the system can transition from weaker traditional connections to stronger threaded connections at specific locations without replacing the entire pipe line.
2Strength
If male/female threaded drop pipes are installed to improve lateral strength, then connection strength increases, but complete line replacement is required which increases cost
Solution Approach 1:
Instead of replacing the entire drop pipe line, the solution segments the replacement effort by using couplings only at specific locations where strength reinforcement is needed. The majority of the existing pipe line can remain in place, and only selective sections are upgraded by inserting couplings between pipe segments.
Solution Approach 2:
The invention applies partial action by implementing threaded connections only where necessary through the use of couplings, rather than converting the entire pipe line. This allows the system to gain the benefits of improved lateral strength at critical locations without incurring the full cost of complete line replacement.
3Ease of operation
If male/female threaded drop pipes are used to eliminate couplings, then ease of installation improves, but compatibility with existing non-threaded pipes deteriorates
Solution Approach 1:
The coupling embodies universality by being capable of connecting to both threaded and non-threaded pipe ends. One end of the coupling has internal threads for connecting to male-threaded pipes, while the other end has a smooth bore for connecting to non-threaded pipes, making it compatible with existing pipe types while enabling threaded connections.
Data Source
AI summary
A threaded coupling for connecting a threaded first connecting drop pipe to a second connecting drop pipe. The coupling has a first female end having an enlarged exterior diameter and an interior diameter defining a lead in section which provides strength to resist lateral forces exerted on the threaded drop pipe connection. Adjacent the lead in section, internal threads are located in the first female end of the coupling. A second female end having an interior diameter substantially the same size as the lead in section of the first female end is located adjacent the internal threads, opposite the first female end. A male connecting end of a first connecting drop pipe having external threads is inserted into the lead in section and screwed into the coupling. A male connecting end of a second connecting drop pipe is coated with an adhesive and inserted into the second female end.