Patent Number: 6,254,445

Title: Inflatable chemical foam injected buoy

Abstract: A lightweight inflatable marker buoy system is resistant to deflation and sinking if punctured. This device will most likely be used by a diver while underwater, but could be air delivered or dropped over the side of a boat and be activated by a timer or on command by electronic or acoustic means. A pair of chemical injector/cartridges each contains pressurized gas and a different chemical compound of a binary chemical compound for producing foam. A housing mounts the pair of chemical injector/cartridges on it and has a chamber to mix the pressurized gas and different compounds of the binary chemical compound to produce the foam. A balloon or flexible, compliant bag coupled to the housing receives the foam, is inflated by the pressurized gas and the foam, and is maintained in an inflated condition as the foam hardens. This lightweight portable buoy can be used as a temporary marker by authorities when an obstruction to navigation is found or when permanent buoys are moved or destroyed after a storm.

Inventors: Jones; Anthony D. (Panama City, FL)

Assignee: The United States of America as represented by the Secretary of the Navy

International Classification: B63C 11/02 (20060101); B63C 11/26 (20060101); B63B 22/00 (20060101); B63B 022/00 ()

Expiration Date: 07/03/2018