Patents by Inventor Stephen Polisar

Stephen Polisar 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: 7908970
    Abstract: A Dual Initiation Strip Charge (DISC) apparatus is initiated by a single initiation source and detonates a strip of explosive charge at two separate contacts. The reflection of explosively induced stresses meet and create a fracture and breach a target along a generally single fracture contour and produce generally fragment-free scattering and no spallation. Methods for making and implementing a DISC apparatus provide numerous advantages over previous methods of creating explosive charges by utilizing steps for rapid prototyping; by implementing efficient steps and designs for metering consistent, repeatable, and controlled amount of high explosive; and by utilizing readily available materials.
    Type: Grant
    Filed: November 13, 2007
    Date of Patent: March 22, 2011
    Assignee: Sandia Corporation
    Inventors: Juan-Carlos Jakaboski, Steven N. Todd, Stephen Polisar, Chance Hughs