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Ear protector for use by airline passenger for pressure balancing during descending and climbing of airliner, has axial groove or groove-shaped passage provided in central bore, central body or between bore and body
Ear protector for use by airline passenger for pressure balancing during descending and climbing of airliner, has axial groove or groove-shaped passage provided in central bore, central body or between bore and body
The protector has a body made of a flexible material such as elastomer, and comprising a central bore (4). Sealing plates (3) are provided at an outer surface of the body for airtight sealing in a state when the protector is inserted in an inner ear. A pressure regulator/flow throttle unit is provided in the bore, and a central body (9) is sealingly inserted into the bore, where the body is made of an air-impermeable material. An axial groove (5) or a groove-shaped passage is provided in the bore, body or between bore and body, and is designed corresponding to desired axial air flow speed.
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