Abstract: An improved structure for a personal flotation device that is relatively comfortable to wear when not in use includes a primary bladder that is shaped to extend about a waist of a user. The personal flotation device also includes a secondary bladder that is in fluid communication with the primary bladder and is shaped to extend upwardly from the waist across a stomach of the user. Lastly, the personal flotation device includes a tertiary bladder that is in fluid communication with the secondary bladder and is shaped to is adapted to across the front of a chest of the user.

Abstract: A personal floatation device includes a housing and a plurality of bladders disposed within the housing. The plurality of bladders are movable between a non-deployed position within the housing and extendable from the housing to a deployed position. A device is provided for selectively filling the bladder with a substance that is buoyant in water and causing the bladder to be moved from the non-deployed position to the deployed position. The bladder filling and deploying mechanism can be a cartridge that contains a supply of a compressed gas.

Abstract: An improved structure for a personal floatation device that is relatively comfortable to wear when not in use includes a primary bladder that is shaped to extend about a waist of a user. The personal flotation device also includes a secondary bladder that is in fluid communication with the primary bladder and is shaped to extend upwardly from the waist across a stomach of the user. Lastly, the personal flotation device includes a tertiary bladder that is in fluid communication with the secondary bladder and is shaped to is adapted to across the front of a chest of the user.

Abstract: A personal floatation device includes a housing and a plurality of bladders disposed within the housing. The plurality of bladders are movable between a non-deployed position within the housing and extendable from the housing to a deployed position. A device is provided for selectively filling the bladder with a substance that is buoyant in water and causing the bladder to be moved from the non-deployed position to the deployed position. The bladder filling and deploying mechanism can be a cartridge that contains a supply of a compressed gas.

Abstract: An interwoven sandwich panel structure made for high intensity impulse mitigation comprises a top and bottom face panel integrally interwoven to a core by creating a preform from the interweaving of cross-wise and length-wise threads and then infusing it with a thermoset polymer resin such that it requires no stitching, bonding, or fastening to attach core to the face panels removing the primary weak points of a sandwich panel structure.