3581782 is referenced by 48 patents and cites 8 patents.

A vapor emission control system suitable for gasoline and other fuel delivery systems, adapted to eliminate the escape of fuel vapors to the atmosphere, and permit utilization of these vapors by the system. The disclosed embodiment of the control system includes a delivery conduit or line having a fuel delivery nozzle, an annular sealing means encircling the nozzle adapted to seal the nozzle within the opening to the container or tank, a vapor return line which may be vacuum operated, and a filter or other means adapted to store the vapors. In the disclosed embodiment of the nozzle assembly, the sealing means includes a flexible annular sleeve which is received within the container opening. The sleeve is expandable in one of the disclosed embodiments to seal the tank opening. In another embodiment, the sealing means is provided with a spring-tensioned annular sealing ring adapted to seal the opening to the tank. In the latter embodiment, the vapors are conducted through apertures in the sleeve to the vapor return line.

Vapor emission control system
Application Number
Publication Number
Application Date
December 23, 1968
Publication Date
June 1, 1971
Onufer George R
Russell Burdsall & Ward Bolt and Nut Co
B01d 53/14
B65b 31/06
B67D 05/01
B67D 05/37
B67D 05/378
B67D 05/04
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