Automatic flotation device

Details Automatic flotation device Automatic flotation device

1989-04-28

1990-11-06

Peters, Jr., Joseph F.

Buoys, rafts, and aquatic devices

Water rescue or life protecting apparatus

Personal flotation device

441 10, B63C 9125

Patent

active

049682776

ABSTRACT:
An automatic flotation device is disclosed which uses an electric circuit to fire a detonator or allow a spring loaded arm to open a CO.sub.2 cartridge which then in turn inflates a bladder which lifts a swimmer to the surface. The circuitry utilizes a pressure sensor to determine the depth of the swimmer under the surface. The circuitry is such that if the swimmer has been below a first depth for a given period of time the bladder is inflated or if the swimmer has been below a second, greater depth for any interval the bladder is inflated.

REFERENCES:
patent: 3130424 (1964-04-01), Santangelo
patent: 3426942 (1969-02-01), McMains et al.
patent: 3605418 (1971-09-01), Levine
patent: 3722408 (1973-03-01), Fox et al.
patent: 4024440 (1977-05-01), Miller

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