Patents by Inventor Michael Limbacher

Michael Limbacher has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Filter assembly with authenticating filter element coupling and replaceable drop-in twist locking filter element therefor
    Patent number: 12643061
    Abstract: A filter assembly with an authenticating filter element coupling, formed of the combination of a keyed bushing and locking guide, and replaceable drop-in twist locking filter element therefor. The keyed bushing is coupled a housing of the filter assembly and provides an authenticating mechanism for a replaceable filter element suited for the specific housing wherein the keyed bushing forms ½ of the authenticating coupling for the filter assembly. The locking guide is coupled to an endcap of a filter element and has a sleeve with slots in an end thereof that match keys of the associated keyed bushing on a filter housing. The locking guide forms ½ of the authenticating coupling for the filter assembly.
    Type: Grant
    Filed: October 10, 2019
    Date of Patent: June 2, 2026
    Assignee: SCHROEDER INDUSTRIES, LLC
    Inventors: Scott F. Surdick, Christopher B. Bortnik, Michael Limbacher
  • FILTER ASSEMBLY WITH AUTHENTICATING FILTER ELEMENT COUPLING AND REPLACEABLE DROP-IN TWIST LOCKING FILTER ELEMENT THEREFOR
    Publication number: 20200114288
    Abstract: A filter assembly with an authenticating filter element coupling, formed of the combination of a keyed bushing and locking guide, and replaceable drop-in twist locking filter element therefor. The keyed bushing is coupled a housing of the filter assembly and provides an authenticating mechanism for a replaceable filter element suited for the specific housing wherein the keyed bushing forms ½ of the authenticating coupling for the filter assembly. The locking guide is coupled to an endcap of a filter element and has a sleeve with slots in an end thereof that match keys of the associated keyed bushing on a filter housing. The locking guide forms ½ of the authenticating coupling for the filter assembly.
    Type: Application
    Filed: October 10, 2019
    Publication date: April 16, 2020
    Inventors: Scott F. Surdick, Christopher B. Bortnik, Michael Limbacher