Patents by Inventor Detlef Nonnenberg

Detlef Nonnenberg 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).

  • Internal combustion engine with an overhead camshaft
    Patent number: 5447127
    Abstract: A lawn mower has at least one rotary cutting blade and an internal combustion engine for operating the at least one cutting blade, wherein the lawn mower can be operated on a substantially horizontal surface, while inclination of the mower on various surface slopes is also possible, while still maintaining adequate lubrication of the operating parts of the mower.
    Type: Grant
    Filed: April 14, 1994
    Date of Patent: September 5, 1995
    Assignee: Fichtel & Sachs AG
    Inventors: Klaus Luck, Paul Kehl, Detlef Nonnenberg