Nested Hose Assembly for Wear Protection and Leak Containment
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Solution Overview
Problem
Current retractable and extendable hoses with fiber woven covers are prone to wear, fray, and cause leaks or snags, making them difficult to handle in various environments and hindering the performance of the inner hose.
Innovation Solution
A hose system comprising an inner hose nested within an outer hose, coupled by a coupling device, which can be made of various materials and connected using threads, clamps, or other attachment methods, allowing for bendable and retractable operation, with the outer hose providing containment and compliance with secondary containment regulations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If fiber woven covers are used on retractable hoses, then the hoses can be extended and retracted, but the covers wear easily and fray when exposed to elements and rough surfaces
Solution Approach 1:
The hose system is divided into distinct segments: an inner hose for fluid transport and an outer hose for protection and containment. This segmentation allows each component to be optimized independently - the inner hose for flexibility and the outer hose for durability and environmental resistance.
Solution Approach 2:
The inner hose is nested within the outer hose, creating a protective envelope. This nested structure allows the inner hose to maintain its flexibility for extension and retraction while the outer hose provides a protective layer against wear, friction, and environmental elements.
2Ease of operation
If fiber woven covers are used on hoses, then the hoses can be manipulated and transported, but the woven covers cause leaks and breakages with the inner hose
Solution Approach 1:
By separating the handling function (outer hose) from the fluid transport function (inner hose), the system allows the outer hose to provide protective friction for easier handling while the inner hose remains protected from damage that would cause leaks or breakages.
Solution Approach 2:
The outer hose acts as an intermediary between the environment and the inner hose. It provides the necessary friction for handling and manipulation while protecting the inner hose from direct contact with rough surfaces, rocks, and other elements that could cause breaks and leaks.
3Adaptability or versatility
If fiber woven covers are used on hoses, then the hoses can be transported to various job sites, but the covers are difficult to handle in dirt, cold and rain
Solution Approach 1:
The outer hose is designed with material properties that change or adapt to environmental conditions. It provides consistent handling characteristics across varying temperatures, moisture levels, and surface conditions, maintaining ease of operation whether in dirt, cold, rain, or other job site environments.
Data Source
AI summary
The disclosure outlines a hose system and method for coupling hoses. The system includes an inner hose surrounded by an outer hose, coupled by a coupling device. In some embodiments, the coupling device and outer hose form a containment assembly for the inner hose. In some embodiments, hoses are flexible and can connect to fluid sources. In some embodiments, clamps can further secure the hoses to the coupling device. The disclosure includes methods of coupling hoses, including by using a pulling device to thread the inner hose through the outer hose. In some embodiments, the coupling method involves attaching the hoses to different parts of a coupling device, potentially utilizing a seat.