Air filter arrangement to permit cleaning without removing element
OwnerLaVon P. Grottoinventor
Life of this patent
Estimating the term…
Abstract
An air filter for use on internal combustion engines which operate primarily in heavy dust conditions, and which includes a mounting member as part of the air filter housing that permits the spinning of the air filter cartridge for centrifugal cleaning in place on the internal combustion engine, without removal of the filter cartridge from the air filter housing.
Claims11
An air filter assembly including an outer housing having a peripheral wall defining a chamber having a central axis and first and second end walls extending generally transverse to the central axis, at least the first end wall being removable, said outer housing having an air inlet and an outlet adapted for connection to an air intake of an engine, filter element means interposed between said inlet and outlet and of a type to filter air passing from said inlet to said outlet without rotation of the filter element means, said outlet being defined by a tube, means to rotatably mount said tube on the first end wall of said outer housing about an axis substantially aligned with the central axis, said filter element means comprising an annular filter ring mounted for rotation with said tube and surrounding the axis of the tube, and means sealing said filter ring relative to the tube to cause air moving from said inlet to said outlet to pass through said filter element means, and motor means mounted on the exterior of the second end wall and having an output shaft extending into the interior of said chamber and substantially aligned with the axis of said tube, coupling means to releasably connect the filter ring to the output shaft, and means to selectively power the motor to thereby rotate said filter element means at a rate sufficient to cause dirt on the exterior of said annular filter ring to be dislodged by centrifugal force.
An air filter assembly for use with internal combustion engines or the like comprising an outer generally cylindrical housing having a central axis, and having at least one removable end wall extending transverse to the axis of the outer housing, said outer housing having an opposite end wall closing the outer housing, and said outer housing having an air inlet, filter element means within said outer housing, said filter element means having a central opening, means for rotatably mounting said filter element means in the interior of said outer housing including a support assembly comprising a tubular member rotatably mounted on said at least one removable end wall, said tubular member defining an outlet from said housing, and a radially extending flange mounted on said tubular member and positioned adjacent said at least one removable end wall of said housing, means mounting the filter element means onto said flange for movement therewith with the central opening thereof aligned with the tubular member, motor means mounted on the housing adjacent the opposite end wall thereof from said at least one removable end wall and having an output shaft, means to connect said motor means output shaft to said filter element means, and control means to permit selectively energizing said motor means to thereby rotate the output shaft of the motor means and said filter element means at a speed sufficient to cause dust on the filter element means to be dislodged by centrifugal force during rotation of the filter element means, and means forming a dust outlet in the housing for permitting dust dislodged from the filter element means during rotation to be removed from the housing.
Dependencies are inferred from the claim text.