USA As Represented by Secretary of the Navy

Other

Michael R Murphy

Eric Scheid

Gregory Wayne Anderson

Wayne P Liu

Maxwell Mayekawa Kerber

Anthony D Jones

Kevin Hovden

A target spar. A left jaw member. The left guidance portion has a left spiral curve. The left arm portion has a left arm profile, a left arm gear, and a left arm protrusion. A right jaw member. The right guidance portion has a right spiral curve. The right arm portion comprises a right arm gear and a right arm protrusion. A top plate member. A bottom plate member. A drive unit comprising an electric motor within a pressure housing. A drive shaft on the electric motor. The bottom plate member abuts the left jaw member, the right jaw member, and the top plate member. The left jaw member and the right jaw member opened and closed. At the closed position, the target spar is slidably received in the left and right jaw members, the top and bottom plate members, and abuts the left and right arm profiles.

Spiral curve self-aligning docking device

An improved shaped charge apparatus and method of manufacturing is provided including a composite wave shaper, a main charge, and a metal liner. An exemplary embodiment's wave shaper can be adapted to manipulate a shock front so that an interaction of the main charge and the metal liner occurs lower along the liner's profile such that the apparatus restricts an initial elongation of a resulting jet. An embodiment can have a thickness of the metal liner sufficient to provide a mass necessary to generate a first size diameter aperture in a target material. An embodiment an also provide a combination of the liner thickness and shock interaction point resulting in the jet having an improved length to diameter ratio among other advantages. An embodiment of the invention can also provide other advantages such as an explosive to mass ratio of less than 3 or 2 to 1.

Shaped charge including structures and compositions having lower explosive charge to liner mass ratio

A hunting arrow comprises a shaft, a tip end, fletching, and a nock having a hollow cavity with arrow locating structure disposed therein. The arrow locating structure includes a normally open electrical circuit having a power source, a time delay, a device for producing an audible signal upon expiration of the time delay countdown, and a switch adapted to close the electrical circuit extending from inside the cavity to the outer side of the nock. Upon actuation of the switch the time delay starts its countdown and upon expiration of such countdown the device for producing an audible signal is energized whereby an audible signal pinpoints the location of the arrow.

Hunting arrow with locating means

Growing community of inventors

San Diego, CA, United States of America

Michael R Murphy