Fuel filter

Details Fuel filter Fuel filter

2007-10-27

2010-06-08

Lithgow, Thomas M (Department: 1797)

Liquid purification or separation

With repair or assembling means

C210S248000, C210S312000, C210S314000, C210S335000

Reexamination Certificate

active

07731845

ABSTRACT:
A fuel filter has a filter housing and an annular filter element arranged in the filter housing. Between the bottom of the filter housing and the bottom area of the filter element a water collecting chamber is formed. The filter element has a coalescing element and a particle filter element. Fuel flows radially from the interior to the exterior of the coalescing element and from the exterior to the interior of the particle filter element. A riser tube extends through the clean chamber and the raw chamber from the bottom of the filter housing to the top. The riser tube has a clean channel and a guide channel. A seal on the riser tube separates a clean chamber from a raw chamber of the filter. A water removal tube is arranged inside the guide channel for removing water from the water collecting chamber.

REFERENCES:
patent: 3465883 (1969-09-01), Jumper
patent: 5462658 (1995-10-01), Sem
patent: 5788859 (1998-08-01), Biere
patent: 2002/0038780 (2002-04-01), Jokschas et al.
patent: 2006/0006109 (2006-01-01), Klein et al.

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