Earplug for an underwater diver

Details Earplug for an underwater diver Earplug for an underwater diver

1981-02-20

1983-09-27

Recla, Henry J.

Surgery

Truss

Pad

128152, A61F 1100

Patent

active

044062826

ABSTRACT:
An earplug for use by an underwater diver includes a tubular vessel of soft flexible material adapted for insertion into the auditory meatus, a plurality of sealing rings surrounding the vessel to seat against the interior surface of the auditory meatus to provide a watertight seal, and a flexible inner vessel end inwardly rolled back upon itself to define a variable volume between the inner end, the interior surface of the auditory meatus, and the eardrum. The variable volume expands and contracts as the diver ascends or descends to maintain pressure equalization across the eardrum, yet prevent the entry of water into the auditory meatus. If the eardrum should rupture, the inner end of the vessel flexes to its full extent but still prevents the entry of water into the middle and inner ear regions.

REFERENCES:
patent: 1406425 (1922-02-01), Stair
patent: 2876767 (1959-03-01), Wasserman
patent: 3080011 (1963-03-01), Henderson
patent: 3137215 (1964-06-01), Taplin
patent: 3259128 (1966-07-01), Leight
patent: 3373236 (1968-03-01), Taplin
patent: 3505999 (1970-04-01), Harvey et al.
patent: 3896801 (1975-07-01), Gront
patent: 3969991 (1976-07-01), Comstock et al.
patent: 4060080 (1977-11-01), Akiyama
patent: 4089332 (1978-05-01), Rose

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