Patents by Inventor Jeff St. Clair

Jeff St. Clair 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).

  • Explosively formed projectile (EFP) with cavitation pin
    Patent number: 9482499
    Abstract: The invention is an explosively formed projectile (EFP). On detonation of an explosive charge, an explosively formed projectile is formed from two separate metal elements, an open-poled dished liner and a cavitation pin. The open-poled dished liner is made of a metal more dense than a metal of the cavitation pin. The cavitation pin lies on the open-poled dished liner longitudinal axis and in contact therewith. The cavitation pin has a truncated right conical shape with a base diameter to length ratio of 0.7:1 to 1.5:1. The ratio of the open-poled dished liner diameter:cavitation pin fore portion major base diameter is 2:1 to 4:1. Upon detonation, the cavitation pin leads the explosively forged liner in the explosively formed projectile assembly. The leading pin causes cavitation in water resulting in an increase in the velocity of the explosively formed projectile.
    Type: Grant
    Filed: October 25, 2013
    Date of Patent: November 1, 2016
    Assignee: The United States of America as Represented by the Secretary of the Navy
    Inventors: Carl Gotzmer, Amos Dare, Steven Kim, Jeff St. Clair