Capillary Fluid Indicator for Compact Wearable Displays
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Solution Overview
Problem
Existing timekeeping devices are cumbersome, require significant space, lack accuracy, and do not provide a quick or flexible visual indication of measured values such as speed, temperature, or time, especially when worn on the body or integrated into small objects.
Innovation Solution
A visual indicator device featuring a transparent capillary chamber and a displacement member, integrated into a bracelet or wearable item, which uses a fluid to display measurements through a meniscus visible on an indicia, with a pump and feedback circuit to accurately indicate time or other values on a minimal space panel.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If traditional liquid indicator devices are used, then they can display measured values, but they require significant space and are cumbersome
Solution Approach 1:
The patent transitions from traditional horizontal or vertical liquid column displays to a capillary chamber where the liquid meniscus moves along the curved surface of the chamber. This dimensional change allows the indicator to wrap around contours and provide clear readings in a compact circular footprint, effectively utilizing the third dimension (curvature) to maintain readability while reducing overall space requirements.
Solution Approach 2:
The capillary chamber is designed to be integrated within the bracelet structure itself, with the chamber nested within the bracelet's cross-section. The indicia are positioned on the outer surface of the bracelet, allowing the display function to be embedded within the wearable structure rather than requiring separate display space.
2Adaptability or versatility
If rigid straight indicators are used, then they provide clear readings, but they cannot adapt to curved surfaces or flexible applications
Solution Approach 1:
The capillary chamber is designed with a curved cross-section that allows the liquid meniscus to move along the curved surface. The chamber can be positioned at various orientations and angles, and the indicia are arranged to follow the curvature, enabling the indicator to adapt to different mounting surfaces and orientations while maintaining accurate readings through the aligned indicia placement.
Solution Approach 2:
The capillary chamber utilizes a thin-walled flexible structure that can conform to curved surfaces. The chamber maintains its structural integrity while allowing for bending and contour adaptation, enabling integration into flexible bracelets or curved display surfaces without compromising the liquid column's linearity or the reading accuracy.
3Volume of stationary object
If minimal space is used for the indicator, then the device is compact, but the fluid movement may be insufficient for clear indication
Solution Approach 1:
The patent utilizes the curved surface of the capillary chamber to extend the visible path of the liquid meniscus. By wrapping the indicia around the curved chamber, the effective display length is increased without proportionally increasing the chamber volume, as the liquid travels along the curved perimeter rather than requiring a linear extension.
Solution Approach 2:
The capillary chamber is designed with optimized local characteristics including specific curvature radius, wall thickness, and indicia placement density. These local quality adjustments ensure that the liquid meniscus remains clearly visible against the indicia background while maintaining a compact overall chamber volume, with the indicia positioned at optimal intervals along the curved path.
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
The device provides a compact, flexible, and aesthetically appealing way to read measured values, adapting to various forms and surfaces, including the human body, while ensuring accuracy and minimal space usage.
Implementation Method 1
a transparent capillary chamber (102) having a primary length and a width less than the primary length
Implementation Method 2
The capillary chamber (102) is matched to an indicia (103)
Data Source
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AI summary
A visual indicator display device includes a bracelet, a transparent capillary chamber, and a displacement member. The transparent capillary chamber is matched to an indicia and has a primary length and a width less than the primary length. The displacement member is functionally disposed at one end of the capillary chamber and is responsive to a measureable input for moving a fluid contained therein a defined amount.