Abstract: Methods and apparatus for a Dual Emission Non-Ferrous Metal Prospecting System are disclosed. One embodiment comprises methods and apparatus for finding metal deposits in the Earth, and then determining whether these metal deposits are ferrous or non-ferrous. One embodiment includes an Electromagnetic Quartz Penetrator. The Electromagnetic Quartz Penetrator includes a transmitter, a receiver, antennas and a first signal processor. One embodiment also includes an Omni-Directional H Field Metal Exciter and Sensor. The Omni-Directional H field exciter produces an output which has a spatial dissipation rate proportional to a factor of 1/r3, and, therefore, has a relatively short range compared to the Electromagnetic Plane.

Abstract: An antenna enclosure is designed to be suspended from a line such as a messenger strand which extends in a first direction between a pair of utility poles, in a similar manner to other aerial strand mounted communication system components. At least one antenna element is mounted in the enclosure. The antenna enclosure in one example is elongated in the first direction and tapers inwardly in a vertical direction between the upper and lower ends of the enclosure. Two spaced connecting brackets mounted on the upper end of the enclosure are configured for connection to spaced positions on a line to suspend the enclosure from the line.

Abstract: An antenna enclosure is designed to be suspended from a line such as a messenger strand which extends in a first direction between a pair of utility poles, in a similar manner to other aerial strand mounted communication system components. At least one antenna element is mounted in the enclosure. The antenna enclosure in one example is elongated in the first direction and tapers inwardly in a vertical direction between the upper and lower ends of the enclosure. Two spaced connecting brackets mounted on the upper end of the enclosure are configured for connection to spaced positions on a line to suspend the enclosure from the line.

Abstract: An antenna enclosure is designed to be suspended from a line such as a messenger strand which extends in a first direction between a pair of utility poles, in a similar manner to other aerial strand mounted communication system components. At least one antenna element is mounted in the enclosure. The antenna enclosure in one example is elongated in the first direction and tapers inwardly in a vertical direction between the upper and lower ends of the enclosure. Two spaced connecting brackets mounted on the upper end of the enclosure are configured for connection to spaced positions on a line to suspend the enclosure from the line.

Abstract: Systems and methods are provided for controlling pay telephones. In one implementation a system is provided. The system includes a pay telephone coupled to a telephone server using a telephone line. The system also includes a local control unit located in proximity to the pay telephone and coupled between the pay telephone and the telephone server, the signaling unit configured to provide signaling voltages associated with pay telephone operation.

Abstract: Systems and methods for wireless communications are provided. In one implementation a communications system is provided. The communications system includes a wireless access point connected to a public switched telephone network “PSTN”. The wireless access point is configured to provide wireless communication allowing a wireless user access device to communicate data through the PSTN connection. The communications system also includes a device coupled to the wireless access point. The device has one or more primary functions unrelated to public communication.

Abstract: An unported vacuum drum has a system of closely spaced small grooves in the outer surface thereof and holes drilled in the drum provide communication between the grooves on the outer surface and a space on the interior of the drum. The interior drum can be connected to a source of vacuum for applying the vacuum through the holes to the grooves. In order to avoid defects that may occur in a web brought into contact with a drum, the outer surface of the drum is covered with a porous sleeve. The pores in the sleeve enable the vacuum to be applied from the grooves to the outer surface of the sleeve for holding the web onto the sleeve.

Abstract: The invention is a switch to permit a laser beam to escape a laser cavity through the use of an externally applied electric field across a harmonic conversion crystal. Amplification takes place in the laser cavity, and then the laser beam is switched out by the laser light being harmonically converted with dichroic or polarization sensitive elements present to alter the optical path of the harmonically converted laser light. Modulation of the laser beam can also be accomplished by varying the external electric field.

Abstract: Off-axis, two-dimensional designs for free electron lasers that maintain correspondence of a light beam with a "synchronous electron" at an optimal transverse radius r>0 to achieve increased beam trapping efficiency and enhanced laser beam wavefront control so as to decrease optical beam diffraction and other deleterious effects.

Abstract: Method and apparatus for spreading and angle-encoding each pulse of a multiplicity of small area, short pulses into several temporally staggered pulses by use of appropriate beam splitters, with the optical elements being arranged so that each staggered pulse is contiguous with one or two other such pulses, and the entire sequence of stacked pulses comprising a single, continuous long pulse. The single long pulse is expanded in area, and then doubly passed through a nonstorage laser amplifier such as KrF. After amplification, the physically separated, angle-encoded and temporally staggered pulses are recombined into a single pulse of short duration. This high intensity output beam is well collimated and may be propagated over long distance, or used for irradiating inertial confinement fusion targets.

Abstract: The invention relates to apparatus and methods for producing high intensity laser radiation generation which is achieved through an optical amplifier-storage ring design. One or two synchronized, counterpropagating laser pulses are injected into a regenerative amplifier cavity and amplified by gain media which are pumped repetitively by electrical or optical means. The gain media excitation pulses are tailored to efficiently amplify the laser pulses during each transit. After the laser pulses have been amplified to the desired intensity level, they are either switched out of the cavity by some switch means, as for example an electro-optical device, for any well known laser end uses, or a target means may be injected into the regenerative amplifier cavity in such a way as to intercept simultaneously the counterpropagating laser pulses.