Water resistant acoustic port in ear-mouthed hearing device
First Claim
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1. A water resistant acoustic port, comprising:
- a housinga sealed chamber within the housing, the chamber having a volume (VC), andan inlet microtube positioned in the wall of the housing and fluidically connecting the chamber to an environment external to the housing, the inlet microtube having an inlet microtube volume (VI);
a hydrophobic coating that overlaps at least a portion of walls of the inlet microtube;
wherein the inlet microtube volume is greater than or equal to the combined volume of VC and VI multiplied by the quantity (1−
(External pressure in air/External pressure when submerged)).
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Abstract
Water resistant acoustic ports and electronic hearing protection devices incorporating such ports are described. More specifically, water proof acoustic ports that provide water protection for an internal sealed chamber by providing acoustically transparent inlets that are capable of withstanding external water pressure at given depth due to their volume relation to that of the internal chamber, as well as hearing protection devices incorporating such ports, are described.
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Citations
18 Claims
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1. A water resistant acoustic port, comprising:
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a housing a sealed chamber within the housing, the chamber having a volume (VC), and an inlet microtube positioned in the wall of the housing and fluidically connecting the chamber to an environment external to the housing, the inlet microtube having an inlet microtube volume (VI); a hydrophobic coating that overlaps at least a portion of walls of the inlet microtube; wherein the inlet microtube volume is greater than or equal to the combined volume of VC and VI multiplied by the quantity (1−
(External pressure in air/External pressure when submerged)). - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A water resistant acoustic port, comprising:
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a housing; a sealed chamber within the housing; an inlet microtube positioned in the wall of the housing and connecting the chamber to an environment external to the housing, the inlet microtube being generally capable of resisting water intrusion from ambient water at a submersion of at least one meter, wherein the inlet microtube further comprises a hydrophobic coating that overlaps at least a portion of the internal surfaces of the inlet microtube to reduce capillary effects; and a semi-permeable diverter positioned on the surface of the housing over the inlet microtube, herein the semi-permeable diverter further protects the inlet microtube from water intrusion due to an impulse event. - View Dependent Claims (17, 18)
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Specification