Protective helmet having nose passage closure elements

Details Protective helmet having nose passage closure elements Protective helmet having nose passage closure elements

1985-10-09

1987-05-26

Recla, Henry J.

Surgery

Respiratory method or device

Means for preventing nasal inhalation

12820124, 12820626, A62B 700

Patent

active

046676678

ABSTRACT:
A protective cap comprises closure elements, by the operation of which the narices can be closed for the purpose of pressure equalization in the middle ear in overcoming extreme differences in altitude. To be able to execute the operation without visual impairment, it is provided that the closure elements are designed as motion elements variable in their extent, which are connected to a flow medium contained in feed lines which is pressurized by an operating element displacing the flow medium.

REFERENCES:
patent: Re31424 (1983-10-01), Ernsting et al.
patent: 1105127 (1914-07-01), Drager
patent: 1873160 (1932-08-01), Sturtevant
patent: 1978994 (1934-10-01), Fortunato
patent: 2265387 (1941-12-01), McMillin
patent: 4102342 (1978-07-01), Akiyama et al.
patent: 4470413 (1984-09-01), Warncke
patent: 4559940 (1985-12-01), McGinnis

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