Air cleaner with snow bypass valve

Details Air cleaner with snow bypass valve Air cleaner with snow bypass valve

2009-01-28

2011-11-01

Smith, Duane (Department: 1776)

Gas separation

With separating media bypass or system gas pressure relief

Valved bypass means

C055S385300, C123S19800E

Reexamination Certificate

active

08048179

ABSTRACT:
An air cleaner for a motor vehicle includes a housing having an air inlet opening, an air outlet opening, a secondary air inlet opening and at least one peripheral wall defining a chamber therein. An air filter element is provided and received into the chamber and positioned to separate the air inlet opening from the air outlet opening. A vacuum actuated valve is provided in the secondary air inlet opening of the housing and is in communication with a secondary air portion of a dirty face of the filter element. The valve configured and adapted to automatically change from a closed to an open state when a vacuum in the housing increases to a predetermined vacuum value and then to close when the vacuum decreases below the predetermined value, thereby permitting the vehicle engine to continue to operate even though airflow in the primary air intake may be obstructed.

REFERENCES:
patent: 3737002 (1973-06-01), Yotsumoto
patent: 4878555 (1989-11-01), Yasunaga et al.
patent: 4969939 (1990-11-01), Machado
patent: 5526777 (1996-06-01), Taomo et al.
patent: 6394128 (2002-05-01), Concialdi
patent: 6395048 (2002-05-01), Yoder et al.
patent: 6425930 (2002-07-01), Wake et al.
patent: 6726742 (2004-04-01), Arden et al.
patent: 7393372 (2008-07-01), Cassell et al.

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