Abstract:
A buoyant boom having: an elongate band extending across a water surface; floats rotatably mounted to the band with rotary bearings between each float and the band; and anchors securing the band at its ends or middle portion to a support, such as a river bed or a river bank structure for example.
Abstract:
An antenna shroud or clutter fence has edge treatment for redirecting or absorbing energy which would otherwise be diffracted in an undesired direction. The edge treatment can include an array of corrugations which are about .lambda./4 deep for scattering sidelobes. The array of corrugations can be parallel to either the E-wave component or the H-wave component. Alternatively, the edge treatment can include an array of antennas encased in a dielectric extension.
Abstract:
Described herein is a chambered container that allows for the mixture of two liquids in a specific ratio that includes first and second chambers for storing liquid. A dispensing device passing positioned to deliver liquid from the second chamber into the first chamber. Graduated portions are found on the container in order to accurately measure the amount of fluid in each of the chambers. The container may also have a coating of non-slip material.
Abstract:
An active denial apparatus for use in non-lethal weaponry includes at least one focusing element configured to focus millimeter-wave energy along an axis of propagation. The at least one focusing element includes an astigmatic or dual axis focusing system configured to direct a focused beam that allows the active denial apparatus to accurately immobilize targets at both close and long range within acceptable limits of intensity.
Abstract:
An active denial apparatus for use in non-lethal weaponry includes at least one focusing element configured to focus millimeter-wave energy along an axis of propagation. The at least one focusing element includes an astigmatic or dual axis focusing system configured to direct a focused beam that allows the active denial apparatus to accurately immobilize targets at both close and long range within acceptable limits of intensity.
Abstract:
An ignition circuit of the capacitor discharge type is disclosed for internal combustion engines. The circuit comprises a transistor inverter which supplies a voltage doubler to charge a storage capacitor. The storage capacitor is connected to an ignition coil through a thyristor. Control means for the thyristor includes engine breaker points or equivalent for alternately preventing and enabling turn-on of the thyristor. A voltage divider provides gate triggering current to the thyristor on each cycle of the voltage supply. This produces either single or multiple ignition pulses for each breaker point cycle, depending upon the engine speed. The voltage divider includes a leakage resistor to limit the initial pulse and to allow current flow through the breaker points and also includes an isolation resistor to render the triggering point of the thyristor immune to changes in the breaker point circuit.