Amplifier Mount Lever for Breathing Mask Condensation

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Solution Overview

Problem

Conventional closed-circuit breathing apparatus masks face issues with condensation buildup due to recycled air moisture, which is not effectively addressed by existing anti-fogging methods, and require a robust, lightweight, and unobtrusive solution for mounting a voice amplifier without adding weight.

Innovation Solution

A mounting plate with a lever system that actuates a wiper to remove condensation from the lens and integrates a sound receiver, using spring-loaded clips for secure attachment, allowing for effective communication and clear vision without increasing the mask's weight.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a sound amplifier is mounted on the mask, then communication functionality is improved, but the weight of the mask increases

Engineering Contradiction:
Improvecommunication functionalityVSAvoidmask weight
Core Design Contradiction:
Adaptability or versatilityVSWeight of moving object

Solution Approach 1:

The mounting plate integrates multiple functions: it provides structural support for the sound amplifier, incorporates a lever mechanism for wiper actuation, and includes a sound transmitting opening. By combining these elements into a single integrated component, the design avoids adding separate mounting structures that would increase weight, while still achieving robust amplifier attachment and condensation removal functionality.

Inventive Principle:
Principle #5Merging (Combining)

2Object-affected harmful factors

If a wiper mechanism is added to remove condensation, then vision clarity is improved, but the device complexity increases

Engineering Contradiction:
Improvecondensation on lensVSAvoidmechanism complexity
Core Design Contradiction:
Object-affected harmful factorsVSDevice complexity

Solution Approach 1:

The wiper mechanism is designed to be manually actuated by the wearer through a lever that rotates and directly moves the wiper blade across the lens. This self-service approach allows the wearer to clear condensation independently without requiring external assistance or complex automated systems, thereby maintaining simplicity while effectively addressing the condensation problem.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The lever for actuating the wiper is integrated into the mounting plate structure itself, rather than being a separate component. This merging of the actuation mechanism with the mounting structure reduces the overall number of parts and simplifies the device architecture while maintaining the condensation removal functionality.

Inventive Principle:
Principle #5Merging (Combining)

3Reliability

If spring-loaded clips are used for attachment, then reliability of sound receiver attachment is improved, but the manufacturing precision requirements increase

Engineering Contradiction:
Improveattachment reliabilityVSAvoidclip positioning precision
Core Design Contradiction:
ReliabilityVSManufacturing precision

Solution Approach 1:

The spring-loaded clips are designed to automatically engage with the sound receiver when attached to the mounting plate. The spring mechanism provides self-adjusting force that ensures reliable latching without requiring precise manual positioning during assembly, thereby maintaining attachment reliability while reducing the skill level and precision required during assembly operations.

Inventive Principle:
Principle #25Self-service

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 removes condensation and enables secure, lightweight attachment of a sound amplifier, enhancing usability and functionality of closed-circuit breathing apparatus masks by maintaining clear vision and communication while minimizing added weight.

Implementation Method 1

The attachment components of the sound receiver can include spring loaded clips that are biased towards a configuration that latches the sound receiver to the forward portion of the mounting plate

Methodology Applied
Scientific EffectElasticity: Elasticity

Implementation Method 2

a lever attached adjacent to a second side of the mounting plate such that it is configured to rotate and actuate a wiper located on a first side of a lens of a breathing mask. The first side of the lens is located closest to a wearer of the breathing mask and the wiper is configured to remove condensation from the inside of the lens

Methodology Applied
Scientific EffectFriction: Friction

Data Source

PatentUS9220930B2Amplifier mount for a closed-circuit breathing apparatus mask
Publication Date: 2015.12.29 DRAEGER MEDICAL SYSTEMS INC
  • US9220930B2 patent drawing
  • US9220930B2 patent drawing
  • US9220930B2 patent drawing

AI summary

A component in a mask in a closed-circuit breathing apparatus includes a lever that actuates a wiper in the mask as well as mount for a communication amplifier. The combined amplifier mount and actuating lever can reduce the profile of the means of actuating the wiper and provide an alternative to using chemical means for preventing the deposition of condensation on the inside of a viewing lens of the mask.