Hubcap filter

Details Hubcap filter Hubcap filter

2007-01-02

2007-01-02

Greene, Jason M. (Department: 1724)

Gas separation

Combined or convertible

In motor vehicle

C055S385100, C055S486000, C055S487000, C055S495000, C055S501000, C055S502000, C055S503000, C055S523000, C055S528000, C096S004000, C096S011000, C301S108100

Reexamination Certificate

active

10788708

ABSTRACT:
A hubcap breather assembly is provided for a hubcap housing lubricated wheel bearings in an automotive vehicle. The breather assembly includes a resilient, annular collar that fits into an access opening in a hubcap end wall, a filter cartridge cup, and a filter cartridge lid which fit together to hold a filter therebetween in a filter cartridge chamber. The filter is a hydrophobic, gas-permeable, particular matter filter that is disposed within and extends entirely across the filter cartridge chamber. Ambient air entering the hubcap through the hubcap breather assembly is filtered to exclude both particulate matter and water before entering the wheel bearing chamber. The filter is preferably formed of three layers, including an outboard porous layer of sintered polypropylene plastic, an intermediate hydrophobic layer of polytetrafluoroethylene, and an inboard porous layer of sintered polypropylene plastic. The filter can be replaced by separating the filter cartridge lid from the filter cartridge cup.

REFERENCES:
patent: 5192117 (1993-03-01), Kuck
patent: 5482358 (1996-01-01), Kuck
patent: 5492393 (1996-02-01), Peisker et al.
patent: 5664846 (1997-09-01), Kuck
patent: 5752746 (1998-05-01), Perry
patent: 5785390 (1998-07-01), Gold et al.
patent: 5860708 (1999-01-01), Borders et al.
patent: 5914415 (1999-06-01), Tago
patent: 6394159 (2002-05-01), Cobb
patent: 6468332 (2002-10-01), Goglio et al.
patent: 6524361 (2003-02-01), Thornton et al.
patent: 6783191 (2004-08-01), Slesinski et al.

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