Side-Filter Face Mask with Quick-Release Cartridges
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Solution Overview
Problem
Existing face masks have limitations such as fixed filtration capabilities, poor fit leading to air leaks, difficulty in replacing filters without removing the mask, and interference with vision and field of use.
Innovation Solution
A novel face mask design with filters located on the sides, quick-release filtration housings, a flexible silicon seal for a custom fit, and an optional respirator valve for improved airflow and visibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If filters are placed in front of the wearer to provide sufficient filtration surface area, then filtration capability is improved, but field of vision is blocked and device complexity increases
Solution Approach 1:
The patent moves the filter from the traditional front position (blocking vision) to the side positions (along the jawline), transitioning from a two-dimensional frontal block to a three-dimensional lateral placement that provides sufficient filtration surface area without obstructing the wearer's forward view
2Device complexity
If a fixed filtration material is used to simplify the mask design, then device complexity is reduced, but adaptability to different hazard types is lost
Solution Approach 1:
The mask is divided into a reusable main body structure and replaceable filter cartridges. This segmentation allows the simple, durable mask housing to be separated from the consumable filters, enabling users to swap filters for different hazard types without replacing the entire mask, thus maintaining low device complexity while achieving high adaptability
Solution Approach 2:
The mask body is designed as a universal platform that can accommodate multiple types of filter cartridges for different hazard scenarios (particulates, gases, vapors). This multi-functionality allows a single mask structure to serve various protective needs by simply changing the filter cartridge
3Device complexity
If elastic straps with fixed attachment points are used to simplify the mask structure, then device complexity is reduced, but fit quality and seal effectiveness deteriorate
Solution Approach 1:
The attachment system transitions from fixed, static attachment points to dynamic, adjustable attachment mechanisms (such as sliding adjusters or repositionable clips) that allow users to customize the mask fit to their unique facial geometry, improving seal effectiveness without significantly increasing device complexity
4Device complexity
If filters are integrated permanently into the mask to reduce device complexity, then device complexity is reduced, but ease of filter replacement deteriorates
Solution Approach 1:
The filter is segmented from the mask body into a separate, removable cartridge that can be quickly exchanged. This segmentation creates a simple insertion/removal interface that reduces the effort and time required for filter replacement compared to permanent integration, while maintaining overall structural simplicity
5Reliability
If disposable masks are used to ensure single-use protection, then reliability of protection is improved, but loss of time for donning new masks increases
Solution Approach 1:
Instead of discarding the entire mask after single use, the design allows recovery and reuse of the mask body while discarding only the consumable filter cartridge. This partial reuse strategy maintains protection reliability through fresh filters while significantly reducing the time and effort required to don a new mask, as users only need to swap cartridges rather than reassemble entire masks
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 mask provides enhanced filtration, improved fit for reduced air leaks, easier filter replacement without removing the mask, and increased visibility and usability in various field conditions.
Implementation Method 1
a filterable portion positioned against a wearer's face such that the flexible seal creates a substantially airtight seal between the mask and the wearer's face when the strap material is secured about the wearer's head
Implementation Method 2
a flexible seal around the perimeter adjacent the wearer's face... the flexible seal creates a substantially airtight seal between the wearer and the mask
Data Source
AI summary
A filtration mask protects the wearer against airborne hazards. The mask is reusable and may be used in a number of configurations. The mask includes filters located to the side and beneath the line of sight of the wearer. The filters may be tailored to the use and type of environmental hazard.