Snap latch filter ring for a fuel injector

Details Snap latch filter ring for a fuel injector Snap latch filter ring for a fuel injector

1995-12-15

1998-09-15

Savage, Matthew O.

Liquid purification or separation

With repair or assembling means

210485, 210495, 210499, 55422, 55498, 55DIG5, B01D 3502

Patent

active

058074830

ABSTRACT:
A filter ring is provided that is particularly adapted for use around the circumferential fuel and timing fluid inlets of a diesel engine fuel injector. The filter ring includes first and second semi-annular, band-shaped filter portions, an integrally formed hinge means for pivotally interconnecting the filter portions, and a snap latch mechanism for detachably connecting the opposite ends of the filter portions. The snap latch mechanism is formed from a bead that extends substantially along the entire length of one of the filter portion ends, and a complementarily-shaped groove on the end of the other filter portion. The thickness of the bead and groove is less than the thickness of the opposite ends of the band-shaped filter portions so that the inner diameter of the resulting filter ring seats securely around a complementarily-shaped annular recess in the fuel injector. The snap latch mechanism allows the filter ring to be removed without damage, whereupon it may be cleaned and reused many times before requiring replacement.

REFERENCES:
patent: 3633757 (1972-01-01), Madern
patent: 4014796 (1977-03-01), Sugiyama et al.
patent: 4207189 (1980-06-01), Geuenich
patent: 4690757 (1987-09-01), Mathus et al.
patent: 4836923 (1989-06-01), Popoff et al.
patent: 5169524 (1992-12-01), Meiritz et al.
patent: 5200067 (1993-04-01), Sann
patent: 5209845 (1993-05-01), Sims
patent: 5308485 (1994-05-01), Griffin et al.

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