Patents by Inventor Bernard Matthys

Bernard Matthys 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).

  • Bowl-cartridge filter having interlock mechanism and methods
    Publication number: 20050161386
    Abstract: A bowl-cartridge filter includes a filter cartridge and a bowl. The filter cartridge includes an interlock arrangement that is oriented to engage the filter bowl, when the filter cartridge is mounted in the filter bowl, and the bowl is rotated in a direction to remove the bowl-cartridge filter from a filter head. The filter bowl includes a cooperating interlock arrangement that engages the interlock arrangement on the filter cartridge. Example embodiments include cog arrangements, which include a plurality of projecting teeth. Various shapes for the teeth are possible, including house-shaped, truncated A-shaped, and pie wedged shape.
    Type: Application
    Filed: March 21, 2005
    Publication date: July 28, 2005
    Applicant: Donaldson Company, Inc.
    Inventors: Michael Gustafson, Bernard Matthys, Eivind Stenersen