Hydration Line Freeze Prevention via Antifreeze and Body Heat
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Solution Overview
Problem
Conventional hydration dispensing devices fail to prevent freeze-up in hydration lines during freezing weather, leading to inaccessible potable fluids, and existing insulation methods only delay the inevitable freeze, making hydration inconvenient and potentially introducing bacteria when trying to clear the line.
Innovation Solution
A remotely actuated valve mechanism with a dedicated hydraulic line filled with antifreeze fluid, allowing the user to control fluid flow by biting or squeezing a bulb, routing the hydration line under clothing for passive heating and using a clearing straw to prevent freezing, ensuring continuous access to hydration without exposing oneself to the elements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of stationary object
If insulation is used to delay freeze-up, then the hydration line remains usable for longer, but the freeze-up is only delayed rather than prevented, especially in extreme cold conditions
Solution Approach 1:
The patent changes the physical-chemical parameter of the fluid by adding antifreeze agent to the hydration line, fundamentally altering the freezing point of the liquid from 0°C to a lower temperature, thereby preventing freeze-up in extreme cold conditions where insulation alone would be insufficient
Solution Approach 2:
The patent introduces an intermediary substance (antifreeze agent) into the hydration line that mediates between the cold environment and the potable fluid, preventing direct thermal contact that would cause freezing while maintaining fluid flow and usability
2Ease of operation
If the hydration line is made accessible at the user's wrist, then convenience is improved, but the line becomes more exposed to freezing conditions
Solution Approach 1:
The patent changes the freezing point parameter of the hydration line fluid by adding antifreeze agent, allowing the line to be accessible at the wrist without freezing even in cold conditions, thus resolving the contradiction between accessibility and freeze protection
Solution Approach 2:
The patent applies preliminary protection by pre-filled antifreeze agent into the hydration line before use, creating a freeze-resistant fluid system in advance that prevents freezing from the moment the line is exposed to cold conditions
3Ease of operation
If air is blown into the hydration line to clear it, then the line can be cleared of fluid, but bacteria are introduced into the line
Solution Approach 1:
The patent introduces an intermediary clearing mechanism (clearing valve with straw) that separates the clearing function from direct mouth-to-line contact, allowing line clearance without the user's mouth introducing bacteria into the hydration system
4Ease of operation
If the hydration line is routed over the shoulder, then the line is accessible, but it dangles awkwardly and strikes the user's hands during activities
Solution Approach 1:
The patent repositions the hydration access point from the shoulder (vertical/upper body dimension) to the wrist (horizontal/lower body dimension), changing the spatial dimension of access and eliminating the dangling problem while maintaining accessibility
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 solution effectively prevents freeze-up by using body heat for passive insulation and antifreeze fluid to maintain hydration access at the user's fingertips, eliminating the need for blowing air into the line and reducing bacterial contamination.
Implementation Method 1
routing the hydration line under clothing for passive heating
Implementation Method 2
a dedicated hydraulic line filled with antifreeze fluid
Data Source
AI summary
The invention is directed to an improved hydration dispensing device and method for preventing the freeze-up of the hydration line, to dispense potable fluids, such as water, from the hydration dispensing device, eliminating freezing by routing the line under the user's clothes with the line accessible section and extending beyond user's cuff, to be accessible at any time. The device and method comprise a remotely actuated valve mechanism adapted worn and remotely actuated, having a valve means for controlling the flow of potable fluid through the mechanism and a shell, defining an interior cavity, providing a valve seat projecting into the interior cavity, adapted to cooperatively seat the valve means, and operationally adapted to selectively open and close a hydration line when operated. The hydration line attaches to a hydration reservoir, or pack liquid-filled bladder, containing the potable fluid.