Underwater breathing apparatus

Details Underwater breathing apparatus Underwater breathing apparatus

1995-01-26

1996-07-16

Burr, Edgar S.

Surgery

Respiratory method or device

Including body or head supported means covering user's scalp

12820111, A62B 702

Patent

active

055357342

ABSTRACT:
The present invention provides an underwater breathing device that does not require the use of a pump, engine or pressurized air supply. The invention includes two overlapping hollow cylindrical tubes. The outer tube has holes at its base to let the flow of air move inside the device, up the inside of the outer tube and into the inner tube so that the swimmer can breath in air without any water. The device is constructed to operate whether it is right side up or upside down and can be utilized by more than one swimmer at the same time.

REFERENCES:
patent: 120089 (1871-10-01), Ormsbee
patent: 813431 (1906-02-01), Zwanami et al.
patent: 4986267 (1991-01-01), Doss
patent: 5117817 (1992-06-01), Lin
patent: 5193530 (1993-03-01), Gamow et al.

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