Buoyancy engine

Details Buoyancy engine Buoyancy engine

2006-01-03

2006-01-03

Freay, Charles G. (Department: 3746)

Power plants

Motor having a buoyant working member

With means to vary buoyancy of working member

C417S330000, C417S331000

Reexamination Certificate

active

06981373

ABSTRACT:
A buoyancy engine, including an upper casing, a lower casing, and a manifold separating the upper and lower casings. The manifold has internal and external control means, that control amounts of liquid entering and leaving the manifold and casings through a primary route and an alternate route. There is a variably ballasted power piston within the upper casing, into and out of which liquid ballast can be pumped to change its buoyancy. There is a liquid discharge piston within the lower casing, that can be coupled to the variably ballasted power piston to form a primary pump. There is also a backup pump that can be used when the primary pump fails. A mechanical slide valve controls the entrance and exit of liquid from the manifold through the primary route.

REFERENCES:
patent: 3643449 (1972-02-01), Murphy
patent: 4208877 (1980-06-01), Evans et al.
patent: 4208878 (1980-06-01), Rainey
patent: 4267695 (1981-05-01), Micciche
patent: 4603551 (1986-08-01), Wood
patent: 6863806 (2005-03-01), Stark et al.
Bruce Dunford, Subsurface buoys tap waves for clean, cheap power, Aug. 3, 2003, The Maui News, p. A3.

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