Patents by Inventor Alfred Ketterl

Alfred Ketterl 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).

  • Projectile with at least one pyrotechnical charge, especially a tracer charge
    Patent number: 4142466
    Abstract: A projectile with at least one longitudinally extending recess emanating from the rear end of the projectile and a rearwardly open sleeve having at least one pyrotechnical charge arranged therein. The sleeve is disposed within the recess and is arranged to be retained in the recess during and after the firing of the projectile. To enable retention of the sleeve, there is provided a pressure relief of propellant gases in the recess and/or abutments of the projectile and/or holding arrangements provided on the sleeve.
    Type: Grant
    Filed: July 15, 1977
    Date of Patent: March 6, 1979
    Assignee: Dynamit Nobel Aktiengesellschaft
    Inventors: Kurt Ballreich, Ernst Jensen, Alfred Ketterl, Rudolf Stahlmann