Patents by Inventor Oliver L. Greuel

Oliver L. Greuel 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).

  • External spark arrestor
    Patent number: 5177962
    Abstract: An external spark arrestor assembly attached directly to the outer shell of a muffler of an internal combustion engine. The assembly includes a spark arresting screen disposed over the exhaust port of the muffler and forming a first exhaust-receiving conduit between the screen and the muffler; an outer perforated cover disposed over the screen and forming a second exhaust-receiving conduit between the screen and the outer cover; and a single centrally located fastener for removably fastening the screen and outer cover to the muffler shell.
    Type: Grant
    Filed: January 14, 1992
    Date of Patent: January 12, 1993
    Assignee: Tecumseh Products Company
    Inventors: Ronald L. Hall, Oliver L. Greuel