Accession Number : ADD013435
Title : Underwater Excavator.
Descriptive Note : Patent, Filed 2 Apr 81, patented 11 Oct 83,
Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC
Personal Author(s) : Williams, Harry S ; Yates, Jan B ; Reidy, John J ; Faccini, Ernest ; Hill, Terry E
Report Date : 11 Oct 1983
Pagination or Media Count : 8
Abstract : An underwater excavator comprising a modular non-metallic cofferdam wherein water under pressure exits from a plurality of nozzles along at least one side of the base of the cofferdam and a fluid driven eductor driven by pressurized fluid evacuates the suspended solids raised by the pressurized fluid that flows through the nozzles, with a plurality of small barrier nozzles located along one or more horizontal conduits used to sink the cofferdam.
Descriptors : *PATENTS, *EXCAVATION, BARRIERS, CONDUITS, DISPERSIONS, EJECTORS, FLUID FLOW, FLUIDS, HORIZONTAL ORIENTATION, NOZZLES, PRESSURIZATION, SOLIDS, WATER, UNDERWATER EQUIPMENT
Subject Categories : Construction Equipment, Materials & Supplies
Distribution Statement : APPROVED FOR PUBLIC RELEASE