The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 25, 2003
Filed:
May. 04, 2001
Kelly R. Schmitz, Stoughton, WI (US);
Kent J. Kallsen, Oregon, WI (US);
Jon S. Wake, Verona, WI (US);
Nelson Industries, Inc., Stoughton, WI (US);
Abstract
An inside-out reverse flow air filter element ( ) has a resiliendtly compressible molded lower end cap ( ) having molded drainage surfaces including a molded raised central dome ( ) shedding moisture radially outwardly and downwardly, a plurality of molded drainage holes ( ) spaced radially outwardly of and below the top of the central dome, and a plurality of radial segments ( ), an annular trough ( ) and tapered slope surfaces ( ) providing desired drainage. A mold ( ) has a plurality of upstanding segments ( ) having posts ( ) and ramps ( ) forming the drainage structure, and locator faces ( ) engaging, guiding and locating the annular filter media ( ) in the mold.