Spin-on filter with improved retaining groove

Details Spin-on filter with improved retaining groove Spin-on filter with improved retaining groove

1997-12-23

1999-05-25

Woo, Jay H.

Liquid purification or separation

Filter

Within flow line or flow line connected close casing

210440, 210443, 210DIG17, B01D 2708

Patent

active

059067403

ABSTRACT:
A spin-on filter including an improved baseplate preferably die cast from aluminum provides an inventive outer gasket retaining groove. The baseplate comprises a hub joined to a rim by ribs. The rim provides a generally cylindrical wall and a seating surface extending radially outward therefrom. The cylindrical wall defines an inner vertical wall for the outer gasket retaining groove. Horizontal ribs extending from the top of the wall provides an inventive retaining device for securing and aligning an outer gasket in the retaining groove. The inventive baseplate can be used in filters with or without a seaming lid. The present invention improves the fastening technique for both types of aluminum in the baseplate filters.

REFERENCES:
patent: 4400864 (1983-08-01), Peyton et al.
patent: 4743374 (1988-05-01), Stifleman
patent: 4834885 (1989-05-01), Misgen et al.
patent: 5080787 (1992-01-01), Brown et al.
patent: 5322624 (1994-06-01), Rogers et al.
patent: 5453195 (1995-09-01), Jorgenson et al.
patent: 5490930 (1996-02-01), Krull
patent: 5525226 (1996-06-01), Brown et al.
patent: 5593577 (1997-01-01), Imai et al.

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