The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 29, 1977
Filed:
Feb. 02, 1976
Daniel E Kinnison, Kimball, NB (US);
Other;
Abstract
An air pre-cleaner is provided for use with an internal combustion engine. The pre-cleaner comprises a housing and vanes fixed to the top of the housing for imparting a circular motion to the air entering the housing between the vanes. This circular motion causes the heavy particles in the air to be projected away from the axis of the housing because of the centrifugal force on the particles caused by the circular motion. A tube means is positioned in the housing and a separator having a plurality of louvers is positioned in the housing between the wall of the housing and the tube. The heavy particles pass through the openings in the louvers and fall from the separator means under the influence of gravity and exit from the housing. The air with the heavy particles removed therefrom then passes through the tube and into the engine. A control mechanism is positioned in the housing between the separator and the exit for controlling the flow of air through the exit towards the separator. The control mechanism comprises a first frustro-conical plate fixed to the tube and extending towards the wall of the housing with the end of the plate being spaced from the wall of the housing, and a second frustro-conical plate fixed to the wall of the housing and extending towards the tube with a space being formed between the end of the second frustro-conical plate and a tube. The width of the first space is greater than the width of the second space whereby the velocity of air passing through the second space is reduced as it passes through the first space. Thus the heavy particles are separated from the air entering the internal combustion engine and the air drawn by the engine through the exit for the heavy particles is controlled.