Patents by Inventor Nikolaus D. Mackert

Nikolaus D. Mackert 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).

  • Clutch disc having a hub disc and a sintered steel hub blank and a method of producing the clutch disc
    Patent number: 4966269
    Abstract: The invention relates to the connection of a hub with a hub disc for a clutch disc by a plastic deformation operation of the hub, the hub is formed of heat-treatable sintered steel.
    Type: Grant
    Filed: May 25, 1989
    Date of Patent: October 30, 1990
    Assignee: Fichtel & Sachs AG
    Inventors: Harald Raab, Manfred Klein, Nikolaus D. Mackert, Karlheinz Hofmann, Gerhard Bittenbring