Liquid purification or separation – Diverse distinct separators – Including a filter
Patent
1996-12-23
1998-07-07
Savage, Matthew O.
Liquid purification or separation
Diverse distinct separators
Including a filter
210316, 210462, 210456, 210498, 210499, B01D 3502
Patent
active
057763410
ABSTRACT:
A fuel intake device (20) for a fuel system (10) having a fuel tank (14) for containing a supply of fuel (16) and an internal fuel feed line (18) which is disposed internally of the fuel tank (14) and which extends into a sump region (26) thereof. The fuel intake device (20) is characterized by a filter assembly (40) which envelopes an end portion (18.sub.E) of the internal fuel feed line (18) and which includes a lower fuel filtering portion (42) and an upper fuel bypass portion (44). The lower fuel filtering portion (42) has a plurality of fine apertures (42.sub.O) therein for facilitating a primary flow (P.sub.F) of fuel (16) therethrough and for filtering debris from the supply of fuel (16) in a normal operating mode. The upper fuel bypass portion (44) has a plurality of coarse apertures (44.sub.O) for facilitating a secondary flow (S.sub.F) of fuel therethrough in a bypass operating mode. Furthermore, the filter assembly (40) is situated about the end portion (18.sub.E) such that the inlet orifice (18.sub.O) thereof is disposed internally of the lower fuel filtering portion (42) and such that the coarse apertures (44.sub.O) of the upper bypass portion (44) are distally spaced from the inlet orifice (18.sub.O). The fuel intake device is further characterized by a shroud member (50) disposed about the filter assembly (40), which shroud member (50) includes an upper end portion (52) disposed in sealed combination with an external peripheral surface (18.sub.P) of the internal fuel feed line (18) and a lower end portion (54) which extends into the sump region (26) of the fuel tank (14). The lower end portion (54), furthermore, defines an opening for facilitating fuel flow to the filter assembly (40).
REFERENCES:
patent: 1977464 (1934-10-01), White
patent: 3291184 (1966-12-01), Varvel
Barnard Richard S.
Chasen Scott A.
Collins Brian A.
Savage Matthew O.
Sikorsky Aircraft Corporation
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