Patents by Inventor Alan D. Klein

Alan D. Klein 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).

  • Liquid filter having interchangeable spin-on canister filter and cartridge filter, and methods
    Publication number: 20040079693
    Abstract: A liquid filter assembly includes a filter head having an interchangeable spin-on canister filter and a bowl-cartridge filter. Methods of using the liquid filter assembly include providing a filter head capable of operably receiving both a spin-on canister filter and a bowl-cartridge filter. The method also includes operably installing one of the spin-on canister filter and the bowl-cartridge filter onto the filter head to provide a filter assembly. After a period of use, the spin-on canister filter or bowl-cartridge filter is removed and replaced. The replacement can include, interchangeably, a spin-on canister filter and a bowl-cartridge filter. Constructions for accommodating an interchangeable system include preferred arrangements of mechanical connection structure.
    Type: Application
    Filed: October 21, 2003
    Publication date: April 29, 2004
    Applicant: Donaldson Company, Inc.
    Inventors: John R. Hacker, David B. Harder, Jess T. Nordby, Michael J. Gustafson, Alan D. Klein
  • Liquid filter having interchangeable spin-on canister filter and cartridge filter, and methods
    Publication number: 20020125188
    Abstract: A liquid filter assembly includes a filter head having an interchangeable spin-on canister filter and a bowl-cartridge filter. Methods of using the liquid filter assembly include providing a filter head capable of operably receiving both a spin-on canister filter and a bowl-cartridge filter. The method also includes operably installing one of the spin-on canister filter and the bowl-cartridge filter onto the filter head to provide a filter assembly. After a period of use, the spin-on canister filter or bowl-cartridge filter is removed and replaced. The replacement can include, interchangeably, a spin-on canister filter and a bowl-cartridge filter. Constructions for accommodating an interchangeable system include preferred arrangements of mechanical connection structure.
    Type: Application
    Filed: March 6, 2001
    Publication date: September 12, 2002
    Inventors: John R. Hacker, David B. Harder, Jess T. Nordby, Michael J. Gustafson, Alan D. Klein