Compact Breathing Mask Stowage Box Pneumatic Control
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Solution Overview
Problem
Existing stowage boxes for breathing masks in small aircraft are space-constrained due to their design, which is suited for larger aircraft, making it difficult to install them in crowded pilot cabins.
Innovation Solution
A compact stowage box design with a pneumatic assembly that controls breathable gas feed through the movement of the mask relative to the box, eliminating the need for doors and allowing installation on a cabin wall, featuring a valve that opens when the mask is removed and closes when inserted, ensuring gas feed only when in use.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a stowage box with doors is used to control breathing gas feed, then safety and functionality are ensured, but the occupied space increases making it unsuitable for small aircraft
Solution Approach 1:
The patent removes the doors from the stowage box design, extracting the space-consuming element while maintaining the essential function of controlling breathing gas feed through the mask position itself
Solution Approach 2:
The patent merges the stowage function and the breathing gas control function into a single integrated system where the mask position directly controls the pneumatic assembly, eliminating the need for separate door mechanisms
2Volume of moving object
If a stowage box is installed in small aircraft cabin, then space is saved, but the complexity of controlling breathing gas feed increases
Solution Approach 1:
The mask itself serves as the control mechanism for the pneumatic assembly. When the mask is inserted or extracted, it automatically triggers the opening or closing of the breathing gas feed through direct mechanical interaction, requiring no additional control systems
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 provides a compact and reliable breathing gas feed system that saves space, ensuring oxygen availability while maintaining safety and functionality, even in small aircraft cabins, and allows for easy mask retrieval with one hand.
Implementation Method 1
the valve is maintained in an open position by the pressure of the breathable gas when the mask is not stowed in the frame
Data Source
AI summary
Embodiments of the invention relate to a stowage box for a breathing mask that includes a frame forming a receptacle for the mask, the frame having an open face for inserting and extracting the mask, and a pneumatic assembly to control the feed of a breathing gas under pressure to the breathing mask. The pneumatic assembly is adapted to close the feed of breathing gas when the mask is inserted into the frame and to open the feed of breathing gas when the mask is extracted from the frame.