Patents by Inventor Randall Allen Engelland

Randall Allen Engelland 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).

  • Air Cleaner Arrangements; Serviceable Filter Elements; And, Methods
    Publication number: 20080022641
    Abstract: An air cleaner arrangement or assembly is provided. The air cleaner arrangement includes a serviceable filter cartridge. The air cleaner assembly also includes an arrangement for positioning the filter cartridge into a preferred, sealing, orientation and for securing the filter cartridge in that location. Preferred serviceable filter cartridges are provided, as well as methods of assembly and use.
    Type: Application
    Filed: February 16, 2005
    Publication date: January 31, 2008
    Applicant: Donaldson Company, Inc.
    Inventors: Randall Allen Engelland, Thomas Richard Olson, Gary Ray Gillingham, Jim C. Rothman, Richard Lawrence Suydam
  • Air cleaner arrangements; serviceable filter elements; and, methods
    Patent number: 7323029
    Abstract: An air cleaner arrangement or assembly is provided. The air cleaner arrangement includes a serviceable filter cartridge. The air cleaner assembly also includes an arrangement for positioning the filter cartridge into a preferred, sealing, orientation and for securing the filter cartridge in that location. Preferred serviceable filter cartridges are provided, as well as methods of assembly and use.
    Type: Grant
    Filed: February 10, 2004
    Date of Patent: January 29, 2008
    Assignee: Donaldson Company, Inc.
    Inventors: Randall Allen Engelland, Thomas Richard Olson, Gary Ray Gillingham, Jim C. Rothman, Richard Lawrence Suydam
  • Air cleaner arrangements; serviceable filter elements; and, methods
    Publication number: 20040221555
    Abstract: An air cleaner arrangement or assembly is provided. The air cleaner arrangement includes a serviceable filter cartridge. The air cleaner assembly also includes an arrangement for positioning the filter cartridge into a preferred, sealing, orientation and for securing the filter cartridge in that location. Preferred serviceable filter cartridges are provided, as well as methods of assembly and use.
    Type: Application
    Filed: February 10, 2004
    Publication date: November 11, 2004
    Applicant: Donaldson Company
    Inventors: Randall Allen Engelland, Thomas Richard Olson, Gary Ray Gillingham, Jim C. Rothman, Richard Lawrence Suydam
  • Air cleaner arrangements; serviceable filter elements; and, methods
    Publication number: 20040173097
    Abstract: An air cleaner arrangement or assembly is provided. The air cleaner arrangement includes a serviceable filter cartridge. The air cleaner assembly also includes an arrangement for positioning the filter cartridge into a preferred, sealing, orientation and for securing the filter cartridge in that location. Preferred serviceable filter cartridges are provided, as well as methods of assembly and use.
    Type: Application
    Filed: February 10, 2004
    Publication date: September 9, 2004
    Applicant: Donaldson Company
    Inventors: Randall Allen Engelland, Thomas Richard Olson, Gary Ray Gillingham, Jim C. Rothman, Richard Lawrence Suydam