Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
December 31, 2019
Patent Application Number
15665405
Date Filed
July 31, 2017
Patent Citations Received
Patent Primary Examiner
Patent abstract
A lighter-than-air toy drone assembly that stays aloft using a balloon that is filled with a lighter-than-air gas. The balloon is inflated and deflated with the gas through a remote control vent valve. A ballast chamber can be provided that is filled with and drained of ballast through a purge valve. Controlled flight is achieved by selectively controlling motorized propellers, the vent valve and the optional purge valve. The motorized propeller provides horizontal movement. The purge valve and the vent valve change the buoyancy of the drone assembly and therefore control vertical movement.
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