Flotation life vest

Abstract

The Flotation Life Vest described here is a personal flotation device (PFD) that is defined more as a Type III PFD (used by swimmers and non-swimmers alike), yet can demonstrate flotation or buoyant force high enough to be similiar to a Type I PFD. A noteworthy forty-seven (47) pounds of flotation is attained by displacing one-thousand, three-hundred and seventy-five (1,375) cubic inches of water with a vacuum-filled volume. The vest is not inflatable, so this flotation system is more streamlined for the wearer during swimming. The tube collar is zipper detachable, and this also reduces drag during swimming. Both the aluminum buoyant cylinders in collar and the aluminum buoyant cells in vest are confined within neoprene and nylon mesh material.

1 . claim is made to:
 The invention of the improvement to Personal Flotation Devices, with said Flotation Life Vest garment, of which buoyancy is developed by vacuum-filled aluminum or titanium cells and cylinders and are confined by sewing into nylon and/or neoprene garment material. The minimum negative pressure of minus five (−5) PSIG vacuum that is contained within each cell and cylinder. The cells and cylinders fabricated from aluminum alloys Series 1000 to 7000, or titanium grade 1,2,3, or 4. The sheetmetal thicknesses from 0.005″ to 0.125″ inclusive of aluminum or titanium that is used to form the cells and cylinders. The cells and cylinders of said Flotation Life Vest is shown through empirical equation (B =pgV), to develop forty-seven (47) pounds of buoyancy by displacing water with a vacuum-filled one-thousand, three-hundred and seventy-five (1,375) cubic inch volume.