Self closing filter centerpost

Details Self closing filter centerpost Self closing filter centerpost

1997-07-21

1998-12-08

Lithgow, Thomas M.

Liquid purification or separation

With repair or assembling means

Placement of container opens flow controller

210438, 210440, 210457, B01D 35153, B01D 2710

Patent

active

058464174

ABSTRACT:
A self-closing centerpost for a fluid filter includes a centerpost body which is constructed and arranged with a hollow interior so as to provide a fluid passageway. The fluid filter is designed for fuel and the hollow centerpost body includes an outer wall which defines a pair of flow apertures. These flow apertures are in flow communication with the fluid passageway in order to deliver fluid to the outlet port of the fluid filter. A control valve is positioned within the hollow interior and is designed with a pair of oppositely-disposed blocking portions which are disposed over the flow apertures when the flow control valve is in its normally closed (spring-biased) condition. In this closed condition, fuel is unable to enter the hollow centerpost body and is thus unable to be delivered to the engine. A biasing spring maintains the flow control valve in this closed condition until such time as a filtering element is installed at which point the endplate of the filtering element is used as the means to push down on a plunger portion of the flow control valve. Once the spring biasing force is exceeded by downward movement of the control valve, the blocking portions move away from the flow apertures so as to move the flow control valve into an open condition and permit fuel to flow through the flow apertures.

REFERENCES:
patent: 2473727 (1949-06-01), Robertson
patent: 2793752 (1957-05-01), Jay
patent: 2894630 (1959-07-01), Humbert
patent: 3056503 (1962-10-01), Roosa
patent: 3300050 (1967-01-01), Perry
patent: 3317048 (1967-05-01), Kasten
patent: 3319791 (1967-05-01), Horne
patent: 3327858 (1967-06-01), Eddy et al.
patent: 3473666 (1969-10-01), Humbert, Jr.
patent: 3726262 (1973-04-01), Moon
patent: 3852196 (1974-12-01), Szpur
patent: 3912630 (1975-10-01), Reighard et al.
patent: 4298465 (1981-11-01), Druffel
patent: 4321136 (1982-03-01), Matsui
patent: 4367144 (1983-01-01), Peters et al.
patent: 4387691 (1983-06-01), Marcoux et al.
patent: 4406785 (1983-09-01), Siefer
patent: 4437986 (1984-03-01), Hutchins et al.
patent: 4477345 (1984-10-01), Szlaga, Jr.
patent: 4502955 (1985-03-01), Schaupp
patent: 4580542 (1986-04-01), Kawabata
patent: 4596224 (1986-06-01), Prager et al.
patent: 4608161 (1986-08-01), Niemeier
patent: 4997555 (1991-03-01), Church et al.
patent: 5049269 (1991-09-01), Shah
patent: 5122264 (1992-06-01), Mohr et al.
patent: 5215655 (1993-06-01), Mittermaier
patent: 5242581 (1993-09-01), Mohr
patent: 5244571 (1993-09-01), Church et al.
patent: 5256285 (1993-10-01), Tomita et al.
patent: 5458767 (1995-10-01), Stone

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