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Mechanism to Trigger the Opening/Closure of a Vent when it Detects Moisture

IP.com Disclosure Number: IPCOM000179348D
Published in the IP.com Journal: Volume 9 Issue 2B (2009-02-26)
Included in the Prior Art Database: 2009-Feb-26
Document File: 1 page(s) / 70K

Publishing Venue

Siemens

Related People

Juergen Carstens: CONTACT

Abstract

Components of non water-proof hearing aids can corrode due to moisture and that process presumably causes malfunctions. Up to now, non water-proof hearing aids can only be made water resistant with hydrophobic coating on the housing.

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Mechanism to Trigger the Opening/Closure of a Vent when it Detects Moisture

Idea: Eng Cheong Lim, SG-Singapur; Harald Klemenz, SG-Singapur; Tze Peng Chua, SG- Singapur; Kristy Lim, SG-Singapur; Li Nah Chua, SG-Singapur; Boon Lan Ng, SG-Singapur;

Elaine Tham, SG-Singapur; Nisha Shakila M.A:, SG-Singapur; Diana Schmidt, SG-Singapur;

Yong Kiat Ng, SG-Singapur

Components of non water-proof hearing aids can corrode due to moisture and that process

presumably causes malfunctions. Up to now, non water-proof hearing aids can only be made water

resistant with hydrophobic coating on the housing.

In order to protect the major metallic components (such as the amplifier, microphone, receiver and

battery contacts) from moisture, it is now proposed to enclose the components in an insulating

material and to use a mechanism that triggers a vent to close automatically when it detects moisture or

high humidity. By that, a vacuum enclosure is set up around the major components and moisture is

blocked out. The process is depicted in Figure 1. When the humidity drops below a specified limit, the

vent re-opens.

By use of the proposed solution, closing components of hearing aids can be protected against

corrosion, thus lengthening the life-span of hearing aids.

Figure 1: Sequence of operations

© SIEMENS AG 2009 file: 2009J00094.doc page: 1

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