Patent ID: 7156625
Filing Date: 2007-01-02
Classification: B01D,F04C

Abstract:
1. A fuel pump for a combustion engine of a self propelled vehicle, comprising: a tubular motor housing having opposed inlet and outlet ends, a motor in said housing, a pump at said inlet end of said housing, said pump in driven relationship with said motor for moving fuel in a stream from the inlet end of said motor housing, through said motor housing and out of said outlet end of said motor housing, a filter at said inlet end of said motor housing up stream of said pump configured for filtering fuel moving in the stream toward said pump, said filter having a rigid perimeter, a check valve at said inlet end of said motor housing up stream of said filter for reducing the stream of fuel moving through said motor housing to said filter, and a filter detector positioned between said check valve and said filter, said filter detector including a valve engager for extending toward said check valve and urging said check valve toward its open position and a filter engager for engaging said perimeter of said filter, whereby in response to a filter being present between said pump and said check valve, said filter detector opens said check valve.