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US 5,958,097 AGranted
Filter insert
AssigneeFirma Carl Freudenberg
InventorsUlrich Schlor, Udo Michaelis, Jorgen Knudsen
Life of this patent
Estimating the term…
Abstract
A filter insert. The filter insert includes an accordion fold pack that is made of a filter material and is joined to a filter frame. The material of the filter frame is injected in a flowable state into the folds of the accordion fold pack which are open in the on-coming flow direction of the medium to be filtered. The material is subsequently hardened during automatic claw fixation with the fold walls. The entire peripheral edge of the accordion fold pack sealingly overlaps the outer boundary surfaces of the filter frame, and is designed as a sealing device.
Claims6
A filter insert comprising:
- an accordion fold pack made of a filter material, the accordion fold pack including a peripheral edge;
- and
- a filter frame including outer boundary surfaces, the accordion fold pack being joined to the filter frame, the peripheral edge of the accordion fold pack sealingly overlapping and projecting from the outer boundary surfaces of the filter frame, the peripheral edge acting as a sealing device.
Dependencies are inferred from the claim text.