Patents by Inventor Lothar Mattheis

Lothar Mattheis 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).

  • Housing for a pneumatic power booster and process for its manufacture
    Patent number: 5297471
    Abstract: A construction and fabrication process for a two piece vacuum brake power booster housing is described which eliminates the surface tensions which are caused by forming during assembly to prevent damage to a protective surface finish. Localized radially weakened zones are each formed by two opposing tongues created by circumferential and axial slots which tongues in the assembled condition of the housing engage behind an outwardly and reversely formed rim (3) of the other housing half (1).
    Type: Grant
    Filed: August 28, 1992
    Date of Patent: March 29, 1994
    Assignee: Alfred Teves GmbH
    Inventors: Peter Boehm, Wilfried Wagner, Lothar Schiel, Manfred Ruffer, Ralf Jakobi, Kai-Michael Graichen, Lothar Mattheis