Reservoir Cap Closure Indicator With Visible Tightening Feedback
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing reservoir tank cap closure indicators rely solely on interference and feel, making it difficult for users to confirm if the cap is fully tightened, leading to potential fluid loss due to incomplete sealing.
Innovation Solution
A reservoir cap closure indicator system that provides visual and/or audible feedback when the cap is fully installed, using a body that moves between positions and includes locking members and alignment features to ensure proper closure confirmation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a downwardly projecting bump feature is used on the cap to indicate closure, then the cap can be tightened against the tank neck, but the user cannot easily see or confirm when the cap is fully tightened
Solution Approach 1:
The indicator is inverted from the conventional downwardly projecting bump to an upwardly extending feature that rises above the cap surface. This inversion makes the indicator visible from above, allowing users to easily confirm closure status without needing to feel or inspect the underside of the cap.
Solution Approach 2:
The indicator transitions from a two-dimensional surface feature to a three-dimensional protruding element that extends vertically above the cap. This dimensional change creates a visible signal that can be detected from a distance and without direct contact with the cap.
2Reliability
If the bump feature is located on the underside of the cap, then it can interfere with the tank neck to prevent over-tightening, but it is out of view and difficult to monitor
Solution Approach 1:
An intermediary indicator mechanism is introduced that translates the mechanical interference event into a visible signal. The indicator may include a flag, tab, or protrusion that rises or changes position when the cap is properly tightened, providing visual feedback without requiring direct observation of the interference point.
Solution Approach 2:
The purely mechanical interference system is supplemented or replaced with a visual indication system. Instead of relying solely on tactile feedback from mechanical interference, the patent introduces visual elements that can be observed from a distance, reducing the need for direct manual inspection.
3Device complexity
If only mechanical interference is used to indicate closure, then the structure remains simple, but users may fail to recognize proper tightening due to inattention or inexperience
Solution Approach 1:
The indicator may incorporate color changes or contrasting colors to enhance visibility and user recognition. For example, the indicator protrusion may be a different color from the cap body, or may change color when the cap is properly tightened, providing an intuitive visual signal that is difficult to miss.
Solution Approach 2:
The indicator creates an asymmetric visual appearance when the cap is properly tightened, such as a protruding element that breaks the symmetry of the cap's top surface. This asymmetric feature naturally draws attention and signals that the closure operation has been completed.
Data Source
AI summary
A reservoir cap closure indicator coupled to a cap comprises a body configured to move between a first position and a second position. An indicator coupled to the body indicates a position of the reservoir cap closure indicator as the body moves between the first position and the second position.