Guide and control means for diaphragm

Details Guide and control means for diaphragm Guide and control means for diaphragm

1991-05-29

1993-04-20

Swinehart, Edwin L.

Ships

Building

Freighters

220505, 220564, B63B 2512

Patent

active

052038289

ABSTRACT:
Relocation of the guide and control system for a seawater ballast/cargo oil, horizontal separation diaphragm, from the lower portion of the cargo tank of an oil tanker to the main deck level, with a corresponding increase in the length of the diaphragm membrane and the guide cylinder, thereby allowing the diaphragm full travel from top to bottom of the tank and vice versa. This relocation enables the total volume of the cargo tank to be utilized for the carriage of two different liquids, at different times, without cross-contamination occurring between the cargo being carried and any residue remaining at in the tank from the previous cargo e.g. a marine very large crude oil carrier (VLCC) fitted with a diaphragm in each of its cargo tanks, could carry a full cargo of crude oil from the Arabian Gulf to Europe or Japan and return with a full cargo of fresh water for industrial or agricultural use.

REFERENCES:
patent: 2696185 (1954-12-01), Snoddy
patent: 4286726 (1981-09-01), Madsen
patent: 4449543 (1984-05-01), Green, Jr.
patent: 4478165 (1984-10-01), Strain
patent: 4705185 (1987-11-01), Barbillat

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