Patent ID: 9510718
Filing Date: 2016-12-06
CPC Classification: A47L,B01D,Y10S

Claim Text:
1. A filter for use with a wet/dry vacuum appliance, the filter comprising: an end plate having an opening extending therethrough; a plurality of support struts on the top surface of the end plate; an annular end ring oriented parallel to the end plate; and a foam filter element positioned between the end plate and the end ring and extending in a circumferential path that forms a closed, interior region and circumscribes a central longitudinal axis of the filter, the filter element being integrally formed with the end plate and the annular ring to form a single filter assembly, wherein the opening in the cap is substantially centrally located about the central longitudinal axis of the filter and is circumscribed by an integral retaining ring, and wherein the filter element is made of an open-cell polyurethane foam.