Z-filter media pack arrangement; and, methods

USRE48050E1 · kind E1 · reissue

Assignee

• Donaldson Company, Inc. · US

Inventors

• Kevin Schrage · Spring Valley, US
• Eugene Lensing · Spillville, US
• Jeff Rahlf · Elma, US
• Wayne R. W. Bishop · St. Louis Park, US
• Gregory Reichter · Bloomington, US
• Benny K. Nelson · Waconia, US
• Rodger I. Spears · Bigfork, US
• Bruce Crenshaw · Frankfort, US
• Vladimir Kladnitsky · Eagan, US

Key dates

• Filing date: Feb 5, 2018
• Grant date: Jun 16, 2020
• Expiry date: Feb 5, 2038

Classification

• Technology area (CPC —): General

Abstract

Z-filter media pack arrangements and methods for providing them are described. The preferred arrangements have a cured-in-place jacket around an outside of a coiled z-filter media combination. The preferred cured-in-place jacket is a mold-in-place overmold which includes, integral therein, a housing seal arrangement. Preferably a cured-in-place center core is used, most preferably one that has opposite concave ends with seal arrangements configured to seal a lead end portion of the coiled z-filter media combination.