Abstract: The invention includes a portable modularized medical unit that may be transported by airplane, helicopter, truck, rail, or ship to and from any location where emergency medical care, trauma care, surgical care, intensive care, isolation care, critical care, mass casualty, exam treatment or emergency medical evacuation are needed.

Abstract: A system for power amplification of an RF signal including polar feedback control. The system may include a feedback-controlled modulator configured to modulate an RF signal based on a feedback-corrected control signal. The modulator is further configured to generate a modulated RF signal. The system also may include a phase shifter configured to correct the phase of the modulated RF signal based on a feedback phase control signal. The system further includes a power amplifier in communication with the modulator and/or the phase shifter. The amplifier is configured to amplify the modulated RF signal and to generate an amplified RF output signal. The system also includes a feedback network configured to generate polar feedback signals, including the feedback-corrected control signal and/or the feedback phase control signal.

Abstract: A system for power amplification of an RF signal including polar feedback control. The system may include a feedback-controlled modulator configured to modulate an RF signal based on a feedback-corrected control signal. The modulator is further configured to generate a modulated RF signal. The system also may include a phase shifter configured to correct the phase of the modulated RF signal based on a feedback phase control signal. The system further includes a power amplifier in communication with the modulator and/or the phase shifter. The amplifier is configured to amplify the modulated RF signal and to generate an amplified RF output signal. The system also includes a feedback network configured to generate polar feedback signals, including the feedback-corrected control signal and/or the feedback phase control signal.

Abstract: An architecture and frequency plan for a wideband UHF radio minimizing spurious output signal emissions uses a low value for the ratio of the maximum RF operating frequency to the (first) intermediate frequency (IF) in the radio, as part of its internal superheterodyne conversion process. A minimum value or a value sufficiently close to the minimum value of this ratio allows the radio design to be optimized to reduce spurious outputs and the effects of inherently present major harmonics. These and other advantages and features permit a radio design to be realized in a cost effective manner for an array of stringent performance specifications including low spurious output emissions.

Abstract: The present invention provides increased geographical coverage and system capacity for mobile/portable radio transceivers using adjacent and typically separate radio communication frequency bands. A radio that transceives in just one frequency band is adapted to provide a configurable duplexing arrangement to permit communications in extended frequency bands. Duplexing circuitry is connected between the radio antenna and the radio transmitter and receiver. Depending upon the mode of operation of the radio transceiver, switches are selectively operated for variously configuring the antenna, duplexer circuitry, receiver, and transmitter to permit communications in a first or a second set of transmit/receive frequency bands. In one preferred example embodiment, only a single duplexer is employed connected to the antenna and transceiving circuitry through plural switches.

Abstract: A cable drum type elevator system for residential low-rise use. The elevator includes: a vertically extending support-rail system, an elevator cab mounted thereon for vertical movement, lifting machinery mounted to the support-rail system and cables operated by the lifting machinery and secured to the cab for raising and lowering the cab on the support-rail system. The support-rail system is supported at its lower end and secured to a ground position. A foot assembly is secured to the rail support system and to the ground to cooperate in supporting the support rail system. The foot assembly extends below the elevator cab. The lifting machinery is mounted to the support rail system at its upper end. A dampening system is used in the lifting machinery connection to the support-rail system to minimize system vibration due to the machinery.

Abstract: A method and apparatus for folding a flat container blank about parallel score lines to bring a glue flap on the blank into juxtaposed relationship with respect to a side panel of the blank. Gripping mechanisms are associated with an intermittently operated conveyor means for pulling a blank past a glue applying station, into the folding station, and into a compressing station where the manufacturers' joint is set. Release means is provided for opening the gripping mechanisms downstream of the compressing station, and a following set of gripper mechanisms push the freed blank from the machine. Further conveyor means may be associated with the apparatus for feeding a liner to the blank to produce a laminated folded and glued blank.