Gas separation – Combined or convertible – In motor vehicle
Reexamination Certificate
1999-10-27
2001-07-10
Simmons, David A. (Department: 1724)
Gas separation
Combined or convertible
In motor vehicle
C055S414000, C055S482000, C055S510000, C055S521000, C123S593000
Reexamination Certificate
active
06258144
ABSTRACT:
FIELD OF THE INVENTION
The present invention relates to an air filtering device, and more particularly, to an air filtering device for a vehicle engine wherein the air filter includes two cone-shaped filtering members co-axially mounted with each other and the two ends of the filter device are opened to allow air flowing therethrough so as to obtain more fresh air having certain speed.
BACKGROUND OF THE INVENTION
A conventional air filtering device for a vehicle engine is illustrated in FIG.
1
and generally includes a collar
100
with a tubular neck
101
extending from a top thereof and the tubular neck
101
has a threaded inside so as to engaged with a cap
200
which seals the neck
101
. A filtering member
300
is a cone-shaped member and made of a metal netted layer and a non-woven layer. The filtering member
300
is made to have corrugated periphery in order to obtain a larger filtering area when air flowing through the periphery of the filtering member
300
. The first end of the filtering member
300
is engaged with the collar
100
and the second end of the filtering member
300
is engaged with a groove
401
of a base member
400
. Therefore, air can only flow through the corrugated periphery of the filtering member
300
and the speed of the air flow will be reduced because the direction of the air flow is changed perpendicularly to enter into the manifold which is connected between the engine and the filtering device. The slow flowing speed of the filtered air reduces the efficiency of the operation of the engine especially when the engine runs at a higher revolutions.
Furthermore, the installation of the manifold is always incurred by the deficiency of space. That is to say, the shape and the length of the manifold is designed and installed when all the parts around the engine are positioned so that the conventional manifold generally has a complicated shape including many curve portions. The manifold having the complicated shape further limits the speed of the filtered air flowing into the combustion chamber in the engine.
The present invention is to provide a filtering device which provides more volume of fresh air into the engine and the speed of the fresh air will not be reduced so as to increase the efficiency of the combustion in the engine.
SUMMARY OF THE INVENTION
In accordance with one aspect of the present invention, there is provided an air filtering device for an engine, comprising a first filtering member and a second filtering member both of which are cone-shaped netted members and have two open ends. A first ring-shaped collar has a first groove for engaging a large open end of the first filtering member and a second ring-shaped collar has a second groove which receives a small open end of the first filtering member so that the second filtering member is co-axially received in the first filtering member. A manifold has one end thereof connected to the first ring-shaped collar and the other end of the manifold is connected to the engine. A regulation member is received in the manifold and includes a ring with a plurality of blades engaged with the ring. Each blade is positioned inclined to a plane where the ring is located.
The object of the present invention intends to provide an air filtering device which has two cone-shaped filtering members co-axially mounted with each other and the two ends of the filtering device are opened so as to allow more air to be filtered via the filtering members.
Another object of the present invention is to provide an air filtering device wherein the manifold has a regulation member received therein so as to produce spiral air flow at a certain speed when the filtered air passing through the regulation member.
These and further objects, features and advantages of the present invention will become more obvious from the following description when taken in connection with the accompanying drawings which show, for purposes of illustration only, several embodiments in accordance with the present invention.
REFERENCES:
patent: 5113838 (1992-05-01), Kim
patent: 5549724 (1996-08-01), Mochida
patent: 5685887 (1997-11-01), Mochida
patent: 6158412 (2000-12-01), Kim
Hopkins Robert A.
Ostrolenk Faber Gerb & Soffen, LLP
Simmons David A.
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