Abstract: A device that can provide sustained release of a detectable marker into a surrounding body of water as well as methods of forming the device and methods of using the device. The devices and methods can be utilized to locate people or vessels, e.g., by search and rescue personnel, following the disabling of air or water vessels of any type or size on/in a body of water. The devices include multiple, separated layers that each include a detectable marker, e.g., a fluorescent dye. The dye-containing layers are separated from one another and sequentially released over a predetermined controlled period of time and as such the device can continue to release a detectable marker over an extended period of time into surrounding water.
Abstract: An explosive device contains a water-reactive material that ignites upon exposure to water. The water-reactive material ignites a water-activated fuse that has a predetermined burn rate and length. The predetermined burn rate and length allows the device to sink to a desired depth before exploding. Hence, the device explodes after a desired period of time and/or at a desired depth. Defense against underwater swimmers is an advantageous feature of embodiments of the disclosure. The device can use a forty millimeter (40 mm) form factor, which permits launch of the device from convention grenade launchers.
April 5, 2013
Date of Patent:
June 14, 2016
LOCKHEED MARTIN CORPORATION
Toby D. Thomas, Jonathan H. Record, Kenneth W. Havens, David L. Hunn
Abstract: An underwater grenade and a method for using an underwater grenade. A depth activated, hand emplaced ordnance utilizing safe and arm technology to address underwater threats (such as enemy swimmers) while providing a safe interface with personnel. The grenade is armed after a sequence of events have occurred including reaching a desired depth and a desired passage of time. Failure of any of the events to occur will cause the grenade to be rendered safe.
April 9, 2008
October 22, 2009
GABRIEL SOTO, Calvin Clayson, Michael Haddon, Jerry Shultz
Abstract: A system of cluster depth charges increases the probability of inflicting damage on an underwater target. In an embodiment, the cluster depth charges are within a housing, and have intelligent sensor, buoyancy, and tracking and homing systems. In another embodiment, the cluster depth charges have a gun attached to a buoyancy section. In another embodiment, the cluster depth charges have magnets so that the cluster depth charges can attach to the target.
Abstract: A protector for propelling charge increments on a mortar shell includes a semi-cylindrical body, the semi-cylindrical body arranged around a bottom and sides of the charge increments; two generally horseshoe shaped end plates attached to a front and a rear of the semi-cylindrical body, the end plates defining openings therein, the tail tube of the mortar fitting in the opening in each end plate, the charge increments being disposed between the two end plates; a wedge-shaped boom attached to the rear end plate, the wedge-shaped boom fitting between two fins on the fin portion of the mortar shell; a stop tab attached to a rear end of the wedge-shaped boom, the stop tab extending substantially perpendicular to a narrow side of the wedge-shaped boom to contact an end of the fin portion thereby minimizing longitudinal motion of the charge increments; and a nose cone attached at the front of the semi-cylindrical body, the nose cone defining an opening at its front end, the middle portion of the mortar shell fitting
March 6, 2003
Date of Patent:
January 4, 2005
The United States of America as represented by the Secretary of the Army
Vishwa Khanna, Richard C Dzury, Kenneth Milano, Tapan Chatterjee