Patents by Inventor David Pethke

David Pethke 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).

  • Publication number: 20070007190
    Abstract: The present invention is designed to offer an alternative to filters being installed and removed from various machines. The present invention provides for a wrench element placed opposite the base of the filter that would be either a male or female connection and would operate with standard tools. It would allow the user to be able to attach a standard tool to the wrench element that is integrally formed into the housing and use the wrench element to rotate the filter. By having the wrench element built into the housing it reduces the risk of slippage of the tool being used for installation and removal.
    Type: Application
    Filed: July 6, 2005
    Publication date: January 11, 2007
    Inventor: David Pethke