Patent ID: 7886781
Filing Date: 2011-02-15
Classification: B67D,Y10T

Abstract:
1. A system for preventing overflow in a storage tank which is fillable via a nozzle, the system comprising: a fill passage connecting the storage tank to an external atmosphere; a fill fitting comprising: a lower passage comprising an upper end, positioned to receive at least a portion of fuel flow from the nozzle, when the nozzle is dispensing fuel within the fill fitting, and a lower end in communication with the storage tank; an upper passage comprising a lower end, in communication with an interior of the lower passage, and an upper end in communication with a hole in the nozzle; a valve, connected to the lower passage, having a fill position and a stop fill position; wherein, when a level of liquid in the storage tank is below a predetermined level, the valve is in the fill position and fuel is permitted to flow from the upper end of the lower passage out the lower end of the lower passage; and wherein when the level of fuel in the storage tank is at or above the predetermined level, the valve is in the stop fill position and at least partially blocks the flow of fuel out of the lower end of the lower passage.