US Government As Represented by the Secretary of the Army

William T Fraser

Amir Ibrahim Zaghloul

Theodore K Anthony

Andrew J Bayba

David Mark Hull

James J Chopack

Richard S Andrejkovics

Ronald G Tobin

Stephen J Vinci

Herbert Brann

Philip N Repicky

Luke E Sturdevant

John Hopkins

An antenna having an elongated housing open at one end and defining an interior chamber. A telescoping mast has a carrier attached at a first end and a flexible antenna attached at its other end. The carrier with the attached mast and antenna is movable between a storage position in which the carrier, mast, and antenna are contained within the interior chamber of the housing, and a deployed position in which the mast and attached antenna protrude outwardly from the housing. A spring is positioned between the carrier and the housing which urges the carrier towards its deployed position. A catch mechanism selectively holds the carrier in its stored position and, when released, releases the spring to move the antenna to its deployed position.

Portable antenna

A representative system for providing an electric field comprises an electrically insulated frame, guard members and endplates. The frame incorporates a top, a bottom, opposing sides and opposing ends, with the sides extending between the top and the bottom. Each of the ends engages the top, the bottom and the sides. The frame defines an interior. The guard members are suspended within the interior of the frame, with each of the guard members being formed of metal tubing. The guard members are spaced from each other and located along a length of the frame such that the guard members are oriented substantially parallel to the ends of the frame. The endplates are positioned at the ends of the frame. The frame, guard members and endplates are operative to form an electric field within the interior of the frame responsive to an electric potential being applied to at least one of the endplates.

Systems and methods involving electric-field cages

An apparatus for the activation of a remote device having a transmitter to generate and transmit user-set special coded signals. The transmitter has a function selector switch to select modes of operation for the transmitter. Included is also a receiver to receive the user-set special coded signals, and the receiver also has a function selector switch to select modes of operation for the receiver. The function selector switch selects the following modes of operation for the transmitter: (a) a &ldquo;transmit/fire&rdquo; mode that enables a fire signal to be transmitted to the receiver; (b) a &ldquo;wake-up&rdquo; mode that enables a set-up receiver mode for immediate firing; (c) a program mode for low power transmission of programmed codes; and (d) a &ldquo;test&rdquo; and operational mode that enables an operational test of the apparatus with no firing output. The function selector switch on the receiver selects the following modes of operation for the receiver: (a) receive a &ldquo;wake-up&rdquo; of &ldquo;fire&rdquo; signal; (b) actuate either an electrical excitation output or an electromechanical solenoid output; (c) provide a continuity test for a blasting cap; (d) program the receiver for receiving programmed codes; and (e) conduct operational tests of the receiver.

Apparatus for remote activation of equipment and demolition charges

Growing community of inventors

Edgewater, MD, United States of America

William T Fraser