Importance

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Abstract

An upwardly opening tank including interconnected opposite side and end walls and a first stationary filter head therein is provided. A second head is mounted in the tank and is shiftable toward and away from the stationary head for clamping a plurality of filter frames between the heads. The stationary head includes inlet and outlet passages for inlet and outlet flow of fluid to be filtered and a downwardly opening cover is provided for the tank including interconnected opposite side and end walls. A lift frame swingably supports the cover from the tank for forward and downward swinging of the cover into closed position and upward and rearward swinging of the cover toward an open position with the cover disposed in a forwardly and downwardly opening attitude. The upper marginal edges of the tank include seal structure for forming at least a generally fluid-tight seal with the lower marginal edges of the cover when the cover is closed, the end walls of the tank include trapezoidal-shaped upper extensions, the end walls of the cover include complementary similar shape and size downwardly opening recesses in which the extensions are received when the cover is closed and the cover is supported for slight oscillation about a horizontal axis extending longitudinally of the cover relative to the lift frame.

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First Claim