Underwater breathing apparatus

Details Underwater breathing apparatus Underwater breathing apparatus

1990-12-07

1993-03-16

Burr, Edgar S.

Surgery

Respiratory method or device

Including body or head supported means covering user's scalp

12820128, B63C 1102

Patent

active

051935309

ABSTRACT:
An underwater breathing apparatus is provided for delivering air to a submerged diver. A manual pump supplies air under pressure to a reservoir bag for delivery to a diver through an air hose. Alternatively, the reservoir bag can be further connected by an air hose to a floatable variable-pressure reservoir bag that delivers air through an air hose to a submerged diver. In order to constantly maintain the air pressure in the reservoir bag in a preselected range, a pressure gauge is provided for the pump operator, who then pumps selectively to maintain the proper air pressure. The diver wears a breathing means having a flow restrictor/shut-off valve, a one-way inlet valve, and a one-way exhaust valve for exhalation. Additionally, an electric pump may be used either to replace the manual pump or as a back-up thereto.

REFERENCES:
patent: 813431 (1906-02-01), Iwanami
patent: 829274 (1906-08-01), Knoff
patent: 835950 (1906-11-01), Iwanami
patent: 1000721 (1911-08-01), Cypra
patent: 3050055 (1962-08-01), Vautin
patent: 3467091 (1969-09-01), Aragona
patent: 3525335 (1970-08-01), Freeman
patent: 4362154 (1982-12-01), Le Masson
patent: 4583536 (1986-04-01), Howell
patent: 4674493 (1987-06-01), Mitchell
patent: 4832013 (1989-05-01), Hartdorn

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