Anodized Hydraulic Hose Coupling Handle for Grip and Flow ID
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Solution Overview
Problem
Existing pressure fluid hose sets, particularly those used in oil-hydraulic systems, face issues with durability and grip due to plastic sleeves being damaged by hydraulic fluids and requiring multiple thread diameters for different hose diameters, leading to confusion in flow direction identification.
Innovation Solution
A one-piece anodized aluminum handle part with varying colors and reflectivity for flow direction marking, featuring ribbing, longitudinal grooves, and an annular flange for improved grip and fluid-tight connections, allowing for universal use across different hose diameters.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a plastic sleeve is used to surround the handle core, then the handle can be manufactured with integrated threads, but the plastic sleeve is attacked and softened by pressurized hydraulic oil, causing loss of grip
Solution Approach 1:
The patent removes the plastic sleeve from the handle construction entirely, extracting the problematic component that degraded under hydraulic oil exposure. The handle is now made as a one-piece metal body without any plastic coating or sleeve, eliminating the chemical compatibility issue while maintaining manufacturing simplicity through direct metal forming and thread cutting.
Solution Approach 2:
The patent employs a composite surface treatment approach by anodizing the aluminum handle body. This creates a durable, chemically resistant surface layer that maintains grip security while the underlying metal provides structural integrity and thread formation capability, combining the benefits of metal strength with a protective surface coating.
2Ease of operation
If different handles with different thread diameters are used for different hose diameters, then each hose size can have a properly fitted handle, but it becomes difficult to identify flow direction and requires multiple handle types
Solution Approach 1:
The patent applies color-coded anodizing to the handle surfaces to indicate flow direction. Different colors or color patterns on the anodized aluminum handles provide immediate visual identification of supply versus return lines, eliminating confusion while maintaining a standardized handle design that can be used across different hose sizes with appropriate thread adaptations.
Solution Approach 2:
The patent develops a universal handle design with standardized features that can accommodate different hose diameters through thread variations rather than requiring completely different handle types. The core handle structure remains the same, providing consistent grip characteristics and identification methods across all applications.
3Reliability
If the handle is made as a one-piece construction, then durability against fluid attack is improved, but grip may be compromised without the annular grooves of a two-part design
Solution Approach 1:
The patent applies different surface treatments to different regions of the one-piece handle. The grip areas receive specific texturing or contouring through machining or forming processes to enhance finger contact and grip security, while other areas maintain smooth surfaces or receive anodizing for corrosion resistance and aesthetic purposes, creating local variations in surface properties optimized for their specific functions.
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
Ensures durable and unambiguous flow direction identification with enhanced grip and pluggability, maintaining performance under high pressures and facilitating easy connection management across various hose sizes.
Implementation Method 1
The anodizing is designed to reflect light only within a narrow spectral range
Implementation Method 2
a knurling is provided on the outer wall... so that non-square diamond-shaped protrusions are formed between them
Data Source
Figure 1
Figure 2a~2b
Figure 3~4
AI summary
The invention relates to a hose assembly with two pressure fluid hoses (1), in particular oil hydraulic or pneumatic hoses, each with a hose line (3) with a hose connection (4) and a hose coupling (2) with a handle part (8) and a coupling part (10). To improve such a hose assembly, it is provided that the handle part (8) is connected to the coupling part (10) on the one hand and to the hose line (3) on the other hand via threads (8.3, 10.1; 8.2, 9.3) of the respective parts and that the handle part (8) is formed in one piece from metal, in particular an aluminum alloy.