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Patent for Sale:

Controllable Buoyant System and Method    

Overview

A controllable buoyant system includes a support structure having a sealed hollow enclosure containing a first gas and surrounded by a second gas, either the first gas or the second gas being lighter than ambient air. The hollow enclosure is pre-filled with the first gas via a one-way valve that prevents the first gas escaping and an altitude sensor generates an altitude signal indicative of a height of the support structure. A height transducer coupled to the hollow enclosure is responsive to the altitude signal for varying the buoyancy of the support structure. A controller is coupled to the altitude sensor and to the height transducer and is responsive to the altitude signal and to at least one reference altitude signal for automatically controlling the height transducer in order to maintain the support structure buoyant at the preset altitude.

Patent Summary

U.S. Patent Classes & Classifications Covered in this listing:

Class 244: Aeronautics And Astronautics

Machines or structures adapted to be: completely or partially sustained by the air (e.g., winged aircraft, helicopters, parachutes, kites, balloons, etc.); propelled and guided or stabilized through the air (e.g., projectiles with fins, guided missiles, etc.); placed in an orbit or which substantially operate outside the earth"s atmosphere (e.g., satellites, space vehicles, etc.); or subcombinations of these machines or structures.

Subclass 31: Balloons
Subclass 97: Buoyancy varying
Subclass 98: Gas bag inflation
Subclass 128: Airship gas cell construction and arrangement