Surgery – Respiratory method or device – Draw-type snorkel
Patent
1994-03-03
1996-01-23
Burr, Edgar S.
Surgery
Respiratory method or device
Draw-type snorkel
12820118, 12820621, 12820629, B63C 1116
Patent
active
054858321
ABSTRACT:
In a first embodiment, a bilateral snorkel apparatus is shown. The bilateral snorkel consists of two tubes connected to a user's mouthpiece at one end and to each other at opposite ends at the back of the user's head. Lateral movement of the snorkel tubes is thus avoided by virtue of the increased rigidity of the tube arrangement. Lateral movement of the mask is also avoided by virtue of connecting the two tubes at the back of the user's head. In a second embodiment, a switchable mouth
ose breathing system is also disclosed. Switching between the mouth and nose is accomplished through a mouth operated hydraulic bladder which enables nose bladders/pads to close the user's nostrils. In a third embodiment, a hydraulically activated valve is illustrated for switching air circulation respectively between the mouth, the nose or for allowing combined mouth
ose breathing.
REFERENCES:
patent: 1445010 (1923-02-01), Feinberg
patent: 1695170 (1926-03-01), Burdick
Burr Edgar S.
Deane, Jr. William J.
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