Patent ID: 6823831
Filing Date: 2004-11-30
Classification: F02M

Abstract:
A flame arrestor for a fuel pump having housing extending along a longitudinal axis intermediate an upstream end which defines an inlet port and a downstream end which defines an outlet port, the inlet port being coupled in fluid communication with the outlet port along a fluid flow path through the housing, and the fuel pump further having a motor contained within the housing intermediate the upstream and downstream ends thereof and coupled in driving force transmitting communication to a pumping element contained within the housing intermediate the motor and the housing upstream end and coupled in fluid communication with the fluid flow path, the arrestor comprising a body received within the housing in the fluid flow path intermediate the outlet port and the motor, the body being formed of an open-cell foam material having an average pore size and thickness selected as being both fluid permeable and adapted to prevent an ignition source from propagating therethrough, and the body being disposed in the fluid flow path such that fuel from the pumping element tank may be pumped to the outlet port through the body with said ignition source being prevented from passing into the outlet port.