Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
288 words
An air pre-cleaner for use with an internal combustion engine, said pre-cleaner comprising: a. a housing having an inlet in the upper portion thereof adapted to admit air to be cleaned, and an outlet in the lower portion thereof; b. vane means mounted within the upper portion of said housing below the inlet for imparting a circular motion to air entering the inlet and passing downwardly through said vane means, such that heavy particles in said air are projected from the axis of said housing by the centrifugal force thereon caused by the circular motion; c. tube means positioned within said housing below said vane means, said tube means defining an axial passage through the central and lower portions of said housing; d. separator means positioned within said housing between the wall of said housing and said tube means, and below said vane means, said separator means having a plurality of louver means therein, wherein the heavy particles in said air pass through said louver means, fall away from said separator means under the influence of gravity, and exit said housing through the outlet therein; and e. control means positioned in said housing between said separator means and the outlet for limiting the upward flow of air through the outlet, into said housing, and toward said separator means whereby air entering said outlet will not restrict the separation of heavy particles from the inlet air in said separator means so that air entering the inlet will pass through said vane means as a circular flow into said separator means wherein the heavy particles separated therein will fall through the outlet and the cleaned air will be directed through said tube means for use in said internal combustion engine.
Claim 2
Dependent Claim
288 words
An air pre-cleaner for use with an internal combustion engine, said pre-cleaner comprising: a. a housing having an inlet in the upper portion thereof adapted to admit air to be cleaned, and an outlet in the lower portion thereof; b. vane means mounted within the upper portion of said housing below the inlet for imparting a circular motion to air entering the inlet and passing downwardly through said vane means, such that heavy particles in said air are projected from the axis of said housing by the centrifugal force thereon caused by the circular motion; c. tube means positioned within said housing below said vane means, said tube means defining an axial passage through the central and lower portions of said housing; d. separator means positioned within said housing between the wall of said housing and said tube means, and below said vane means, said separator means having a plurality of louver means therein, wherein the heavy particles in said air pass through said louver means, fall away from said separator means under the influence of gravity, and exit said housing through the outlet therein; and e. control means positioned in said housing between said separator means and the outlet for limiting the upward flow of air through the outlet, into said housing, and toward said separator means whereby air entering said outlet will not restrict the separation of heavy particles from the inlet air in said separator means so that air entering the inlet will pass through said vane means as a circular flow into said separator means wherein the heavy particles separated therein will fall through the outlet and the cleaned air will be directed through said tube means for use in said internal combustion engine.
Claim 3
Dependent Claim
119 words
The air pre-cleaner of claim 1 wherein said control means comprises a first frustro-conical plate fixed to said tube means and extending towards the walls of said housing, wherein a first space is formed between the end of said first frustro-conical plate and the wall of said housing, and a second frustro-conical plate fixed to the wall of said housing and extending toward said tube means, wherein a second space is formed between the end of said second frustro-conical plate and said tube and wherein the diameter of said first space is greater than the diameter of said second space whereby the velocity of air passing through said second space is reduced as it passes through said first space.
Claim 4
Dependent Claim
46 words
The air pre-cleaner of claim 2 wherein said separator means comprises a third frustro-conical plate fixed to the wall of said housing and said tube and wherein said louvers are positioned such that the open end thereof faces the direction from which said air is flowing.
Claim 5
Dependent Claim
66 words
The air pre-cleaner of claim 3 wherein said first frustro-conical plate is positioned below said third frustro-conical plate and said second frustro-conical plate is positioned below said first frustro-conical plate, whereby heavy particles passing through said louvers fall onto said first frustro-conical plate, pass through said first space, fall onto said second frustro-conical plate, and pass through said second space prior to exiting from said housing.
Claim 6
Dependent Claim
22 words
The air pre-cleaner of claim 4 wherein said louvers are canted 15° with respect to the radii of said third frustro-conical plate.