Fuel filter with restriction indicator, and method of using...

Details Fuel filter with restriction indicator, and method of using... Fuel filter with restriction indicator, and method of using...

2006-01-24

2006-01-24

Hopkins, Robert A. (Department: 1724)

Liquid purification or separation

Processes

Including controlling process in response to a sensed condition

C210S090000, C210S438000, C210S443000

Reexamination Certificate

active

06989104

ABSTRACT:
A fuel filter assembly for a combustion engine, including a two-part filter housing, a filter element, and a restriction sensor, including an external visual display apparatus for indicating when to replace the filter element. As fluid pressure increases within the filter housing, the visual display apparatus correspondingly displays the increase in pressure. When the pressure sensor detects an amount of pressure at or in excess of a predetermined amount, the visual display apparatus indicates replacement of the filter element. A modified embodiment including an electronic pressure sensor and a remote display unit is also described.

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