Importance

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Abstract

A container for air filters adapted to selectively house one or the other of at least two different primary filter elements having different diameters and different lengths, the container having a cylindrical body closed at one end by a fixed cap and closed at its opposite end by a removable cap, an air inlet in the container body and a centrally disposed air outlet in the fixed cap, the fixed cap being provided with a plurality of concentric annular sealing surfaces surrounding the air outlet, each such surface forming a seat for a different size primary filter element, centering means being provided to center each different primary filter element in the container, together with adjustable means for securing each different primary filter element in the container with its end in sealing contact with the corresponding sealing surface, provision being made for a secondary filter element.

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First Claim