Closed loop buoyancy system

Details Closed loop buoyancy system Closed loop buoyancy system

2006-09-26

2006-09-26

Avila, Stephen (Department: 3617)

Buoys, rafts, and aquatic devices

Buoy

Having means to control attitude or position

C441S002000, C114S331000

Reexamination Certificate

active

07112111

ABSTRACT:
A closed loop buoyancy system wherein a device housing the system is submerged in a liquid filled container, the device dives to the bottom of the container, remains for a regulated amount of time, and then floats back to the surface of the liquid.

REFERENCES:
patent: 4266500 (1981-05-01), Jurca
patent: 4455782 (1984-06-01), Seefluth
patent: 4692906 (1987-09-01), Neeley
patent: 5129348 (1992-07-01), Rannenberg et al.
patent: 5379267 (1995-01-01), Sparks et al.
patent: 5460556 (1995-10-01), Logan et al.
patent: 6021731 (2000-02-01), French et al.
patent: 6702989 (2004-03-01), Sacks et al.

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