Patents by Inventor Manfred Pietsch

Manfred Pietsch 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).

  • Patent number: 4901619
    Abstract: In the inventive shaped charge, the main charge and the propagating charge are held together solely by the barrier. This union is possible (and is distinguished by pronounced freedom from flaws) because the barrier is produced directly in the cavity in which it is to remain and is able to conform with the utmost accuracy to the surfaces of the charges. The barrier is advantageously formed under vacuum. Factors to be considered in the selection of the barrier material are its fluidifiability, its solidification and shrinkage behavior, and its compatibility with the explosive. Suitable barrier materials include single- or two-component foams, casting compounds, resins and adhesives.
    Type: Grant
    Filed: December 12, 1988
    Date of Patent: February 20, 1990
    Assignee: Dynamit Nobel Aktiengesellschaft
    Inventors: Ulrich Sassmannshausen, Manfred Pietsch