Filter cartridge with snap fit connection

Details Filter cartridge with snap fit connection Filter cartridge with snap fit connection

2007-09-06

2010-12-28

Menon, Krishnan S (Department: 1797)

Liquid purification or separation

Plural distinct separators

Filters

C210S337000, C210S256000, C210S315000, C210S335000, C210S342000, C210S261000, C210S455000, C210S232000

Reexamination Certificate

active

07857974

ABSTRACT:
A filter cartridge for use in filtering fluids, for example fuel, lubrication, hydraulic and other liquids, as well as air. The filter cartridge is a filter-in-filter design with an inner filter and an outer filter. The inner filter and the outer filter, for example the bottom end plates thereof, are connected to each other via a snap fit connection mechanism. During manufacture, the inner filter can be inserted into the outer filter, with the snap fit connection mechanism retaining the inner filter in the outer filter.

REFERENCES:
patent: 1634463 (1927-07-01), Hills
patent: 5078877 (1992-01-01), Cudaback et al.
patent: 5342511 (1994-08-01), Brown et al.
patent: 6440191 (2002-08-01), Berfield et al.
patent: 6884349 (2005-04-01), Jiang
patent: 7473355 (2009-01-01), Cline et al.
patent: 2006/0157403 (2006-07-01), Harder et al.
U.S. Appl. No. 11/780,176, filed Jul. 19, 2007, title: Standpipe With Flow Restriction Valve, and Filter Cartridge, inventor Zemin Jiang, 37 pages.
U.S. Appl. No. 11/937,700, filed Nov. 9, 2007, title: Standpipe With Flow Restriction Valve, and Filter Cartridge, inventor Zemin Jiang, 37 pages.

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