초록 ▼

A nestable filter having a central panel with a frame attached around the peripheral edges of the central panel. The central panel has elongated corrugations which extend longitudinally from one side to the opposite side. The frame is made up of frame members which have a generally V-shaped cross-se

A nestable filter having a central panel with a frame attached around the peripheral edges of the central panel. The central panel has elongated corrugations which extend longitudinally from one side to the opposite side. The frame is made up of frame members which have a generally V-shaped cross-section, the inner leg of which attaches to the edges of the corrugated central panel. Corrugated voids are formed on the inner wall of at least two of the frame members, aligned with the channels formed by the corrugations, permitting the filter to nest within a similarly constructed filter.

대표청구항 ▼

[ I claim:] [1.] A filter comprising:(a) a corrugated central panel having: elongated corrugations arranged in a plane and extending longitudinally from a first peripheral edge of the central panel to a second, opposite peripheral edge of the central panel, said central panel having a first face and

[ I claim:] [1.] A filter comprising:(a) a corrugated central panel having: elongated corrugations arranged in a plane and extending longitudinally from a first peripheral edge of the central panel to a second, opposite peripheral edge of the central panel, said central panel having a first face and an oppositely directed second face; and(b) at least two frame members, each frame member mounted to one of the peripheral edges of the central panel and comprising an elongated wall extending at an obtuse angle from the plane of the central panel to permit nesting, and said elongated wall of each frame member having corrugated voids at intersections of the elongated wall with the elongated corrugation, the voids extending in from a longitudinally extending edge of the elongated wall to permit nesting receipt of the corrugations of a similarly constructed filter.