Evaporative emission control of liquid storage tanks using bello

Details Evaporative emission control of liquid storage tanks using bello Evaporative emission control of liquid storage tanks using bello

1987-07-15

1989-11-14

Marcus, Stephen

Receptacles

Container attachment or adjunct

Pressure relief means

220216, 220 85S, B65D 2500

Patent

active

048801356

ABSTRACT:
The invention relates to the installation of a vapor reduction and isolation system in a liquid storage tank. A flexible bellow divides the interior of the storage tank into two separate compartments: a closed liquid-vapor space and an externally vented space. Changes in liquid level, temperature, pressure, etc., are automatically compensated by extensions and contractions of the bellow, keeping the pressure in the tank constantly at atmospheric pressure without resort to venting to the atmosphere or to a carbon canister in the current vapor recovery system. The bellow is also used for sensing and controlling liquid level and for compensating for temperature and pressure changes.

REFERENCES:
patent: 3617034 (1971-11-01), Skinner
patent: 3693825 (1972-09-01), Richman
patent: 4163505 (1979-08-01), Gunther
patent: 4254887 (1981-03-01), Bold
patent: 4705185 (1987-11-01), Barbillat

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