Patents by Inventor Hubert Julius RAHN

Hubert Julius RAHN 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 CARTRIDGES; AIR CLEANER ASSEMBLIES; HOUSINGS; FEATURES; COMPONENTS; AND, METHODS
    Publication number: 20220047984
    Abstract: Air cleaner assemblies, components, features and methods of assembly and use are described. Example air cleaner assemblies are depicted and described in which a main filter cartridge sealing surface is recessed from an open end of a housing body. An access cover of the housing is configured with a portion extending inwardly to engage a main filter cartridge portion and bias it against the main filter cartridge sealing surface. In selected assemblies, the portion of the access cover extending inwardly toward the main filter cartridge, is a precleaner having flow separator tubes therein.
    Type: Application
    Filed: July 22, 2021
    Publication date: February 17, 2022
    Inventors: David J. Burton, Hubert Julius Rahn
  • Filter cartridges; air cleaner assemblies; housings; features; components; and, methods
    Patent number: 11110382
    Abstract: Air cleaner assemblies, components, features and methods of assembly and use are described. Example air cleaner assemblies are depicted and described in which a main filter cartridge sealing surface is recessed from an open end of a housing body. An access cover of the housing is configured with a portion extending inwardly to engage a main filter cartridge portion and bias it against the main filter cartridge sealing surface. In selected assemblies, the portion of the access cover extending inwardly toward the main filter cartridge, is a precleaner having flow separator tubes therein.
    Type: Grant
    Filed: December 10, 2019
    Date of Patent: September 7, 2021
    Assignee: Donaldson Company, Inc.
    Inventors: David J. Burton, Hubert Julius Rahn
  • FILTER CARTRIDGES; AIR CLEANER ASSEMBLIES; HOUSINGS; FEATURES; COMPONENTS; AND, METHODS
    Publication number: 20200230541
    Abstract: Air cleaner assemblies, components, features and methods of assembly and use are described. Example air cleaner assemblies are depicted and described in which a main filter cartridge sealing surface is recessed from an open end of a housing body. An access cover of the housing is configured with a portion extending inwardly to engage a main filter cartridge portion and bias it against the main filter cartridge sealing surface. In selected assemblies, the portion of the access cover extending inwardly toward the main filter cartridge, is a precleaner having flow separator tubes therein.
    Type: Application
    Filed: December 10, 2019
    Publication date: July 23, 2020
    Applicant: Donaldson Company Inc.
    Inventors: David J. Burton, Hubert Julius Rahn
  • Filter cartridges; air cleaner assemblies; housings; features; components; and, methods
    Patent number: 10532310
    Abstract: Air cleaner assemblies, components, features and methods of assembly and use are described. Example air cleaner assemblies are depicted and described in which a main filter cartridge sealing surface is recessed from an open end of a housing body. An access cover of the housing is configured with a portion extending inwardly to engage a main filter cartridge portion and bias it against the main filter cartridge sealing surface. In selected assemblies, the portion of the access cover extending inwardly toward the main filter cartridge, is a precleaner having flow separator tubes therein.
    Type: Grant
    Filed: December 23, 2015
    Date of Patent: January 14, 2020
    Assignee: Donaldson Company, Inc.
    Inventors: David J. Burton, Hubert Julius Rahn
  • FILTER CARTRIDGES; AIR CLEANER ASSEMBLIES; HOUSINGS; FEATURES; COMPONENTS; AND, METHODS
    Publication number: 20190111374
    Abstract: Air cleaner assemblies, components, features and methods of assembly and use are described. Example air cleaner assemblies are depicted and described in which a main filter cartridge sealing surface is recessed from an open end of a housing body. An access cover of the housing is configured with a portion extending inwardly to engage a main filter cartridge portion and bias it against the main filter cartridge sealing surface. In selected assemblies, the portion of the access cover extending inwardly toward the main filter cartridge, is a precleaner having flow separator tubes therein.
    Type: Application
    Filed: December 23, 2015
    Publication date: April 18, 2019
    Inventors: David J. BURTON, Hubert Julius RAHN