US Patent 10256861 Floatable cell phone case

A floatable cell phone case floats, with a cell phone or other electronic device housed therein, on a liquid through use of enclosed polygonal units that define a polygonal air volume. The polygonal units form a seal with the cell phone to create buoyancy. The cell phone case comprises case body having a rear wall and enclosed sidewalls having a flange. The rear wall and sidewalls define a device placement zone. The device placement zone is sized to house the cell phone. The flange retains the cell phone within the device placement zone. The phone case further comprises enclosed polygonal units spanning upwardly from an inner surface of the rear wall into the device placement zone. Each of the polygonal units define a polygonal air volume.