Patents by Inventor John A. M. Zehmer, III

John A. M. Zehmer, III 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).

  • Munroe effect breaching device
    Patent number: 4418622
    Abstract: An unlined Munroe Effect device for breaching structures in urban terrain. he device is constructed as an unlined, linear, shaped explosive charge which directs an explosive jet into the structure. The shaped charge is formed with a honeycombed substrate of metal in which the substrate interstices are filled with and the substrate is covered by an explosive material. The substrate is embedded in the explosive material. The explosive material and substrate, prior to curing of the explosive material, are formed into an unlined, semi-cylindrical shape to create the explosive jet or Munroe Effect. The device is initiated or detonated with a booster charge.
    Type: Grant
    Filed: July 2, 1982
    Date of Patent: December 6, 1983
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: John S. Foster, John A. M. Zehmer, III