Gas pump vapor recovery system

Details Gas pump vapor recovery system Gas pump vapor recovery system

1993-10-01

1996-02-27

Bertsch, Richard A.

Pumps

Processes

417313, 141285, 141290, F04B 5320, B65B 116

Patent

active

054944090

ABSTRACT:
A vapor recovery system for use with fuel dispensing nozzles. The system includes a fuel dispensing nozzle and a vapor piping line operably connected to the nozzle for insertion into a tank for receiving fuel. The line has a small diameter with respect to the diameter of the fuel dispensing hose supplying fuel to the nozzle. A sump is connected to the other end of the line and has a source of vacuum for positively assisting flow of vapor through the line. The sump includes a filter for separating fuel from the vapor to produce vapor clean air. It also has both a vent for venting the vapor clean air and a drain for removing the separated fuel. The system preferably further includes a vacuum regulator means for regulating the vacuum in the vapor piping line by controlling the vacuum at about 1 to about 5 inches of mercury in the line.

REFERENCES:
patent: 3996976 (1976-12-01), Hansel
patent: 4098308 (1978-07-01), Purdum
patent: 4223706 (1980-09-01), McGahey
patent: 4260000 (1981-04-01), McGahey
patent: 4306594 (1981-12-01), Plawck
patent: 4699638 (1987-10-01), Harris
patent: 4770677 (1988-09-01), Harris
patent: 4816045 (1989-03-01), Szlaga et al.
patent: 5038838 (1991-08-01), Bergamini et al.
patent: 5123817 (1992-06-01), Willemsen

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