A buoyancy compensator device having a pair of tank encircling straps for connection of the backpack to a compressed air tank, inflation hoses for receiving air from a tank and inflating the buoyancy compensator device and valves for releasing air from the buoyancy compensator including selectively operational...http://www.google.es/patents/US5346419?utm_source=gb-gplus-sharePatente US5346419 - Buoyancy compensator device with backpack and adjustable harness
Buoyancy compensator device with backpack and adjustable harness
