Double walled underground storage tank

Measuring and testing – With fluid pressure – Leakage

Patent

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Details

220483, 220469, G01M 304

Patent

active

052208230

ABSTRACT:
An underground storage tank is provided with a load-transmitting material in the annular space between inner and outer walls. The load-transmitting material passes aqueous liquid and the stored product and so may be used with either wet or dry alarm systems.

REFERENCES:
patent: 2725271 (1955-11-01), Cunningham
patent: 3598275 (1969-05-01), Francois
patent: 4653312 (1987-03-01), Sharp
patent: 4685327 (1987-08-01), Sharp
patent: 4825687 (1989-05-01), Sharp
patent: 4844287 (1989-07-01), Long
patent: 4974739 (1990-12-01), Gelin
patent: 4989447 (1991-02-01), Gelin
patent: 4993581 (1991-02-01), Mitchell
90114377.6-European Search Report.

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