Patents by Inventor Rudiger Trojahn

Rudiger Trojahn 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).

  • Method for simultaneous production of a plurality of leaf springs from a fiber composite material
    Patent number: 10046485
    Abstract: The invention relates to a method for producing leaf springs from a fiber composite material, for which a plurality of layers of fibers soaked or impregnated with synthetic resin in order to build up a not yet hardened unfinished leaf. The unfinished leaf spring is arranged in a compression mold, and the unfinished leaf spring is hardened under the influence of a predetermined pressing force and temperature curve over time to give a finished leaf spring. In order to reduce production costs, according to the invention a plurality of unfinished leaf springs are arranged vertically one above the other in the compression mold and the unfinished leaf springs are simultaneously hardened in the compression mold to give leaf springs.
    Type: Grant
    Filed: February 20, 2015
    Date of Patent: August 14, 2018
    Assignee: IFC Composite GmbH
    Inventors: Matthias Voigt, Rudiger Trojahn, Heiko Kempe
  • METHOD FOR SIMULTANEOUS PRODUCTION OF A PLURALITY OF LEAF SPRINGS FROM A FIBER COMPOSITE MATERIAL
    Publication number: 20150158212
    Abstract: The invention relates to a method for producing leaf springs from a fiber composite material, for which a plurality of layers of fibers soaked or impregnated with synthetic resin in order to build up a not yet hardened unfinished leaf. The unfinished leaf spring is arranged in a compression mold, and the unfinished leaf spring is hardened under the influence of a predetermined pressing force and temperature curve over time to give a finished leaf spring. In order to reduce production costs, according to the invention a plurality of unfinished leaf springs are arranged vertically one above the other in the compression mold and the unfinished leaf springs are simultaneously hardened in the compression mold to give leaf springs.
    Type: Application
    Filed: February 20, 2015
    Publication date: June 11, 2015
    Inventors: Matthias Voigt, Rudiger Trojahn, Heiko Kempe