Abstract: A circuit for protecting a plurality of tip/ring SLIC cards during over current or over voltage conditions. A diode pair corresponding to each tip/ring pair provides positive voltage over voltage protection in a negative powering scheme. Two thyristors provide negative over voltage protection. Tip conductors of half of the SLICs connect to the cathode of one of the thyristors. The ring conductors corresponding to each of these tips connects to the cathode of the other, or second, thyristor. The remaining tips are connected to the cathode of the second thyristor. The rings corresponding to these remaining tips connect to the cathode of the first thyristor. This alternating connection of tips and rings provides twice the current capacity of a single thyristor, while cutting in half the potential holding current through either of the thyristors, thus increasing the likelihood of automatic return to normal operation following cessation of negative over voltage.

Abstract: This invention relates to a cover for an assessment device which is used to obtain feedback from a customer and to evaluate a service or product. The cover includes a plurality of questions and possible answers to the questions displayed on the cover. A memory is located on the cover, the memory containing control data to be used by a processor in a base portion of the device to control the operation of the assessment device. The cover also includes an electrical connector for connecting the memory to the processor in the base portion.

Abstract: A circuit for protecting a plurality of tip/ring SLIC cards during over current or over voltage conditions. A diode pair corresponding to each tip/ring pair provides positive voltage over voltage protection in a negative powering scheme.

Abstract: A vertically elongated mount is provided and supported from a tractor vehicle of the cab over engine type closely behind and spaced slightly inwardly of the front wheel of the tractor on the driver's side thereof. An elongated support arm is provided and has a first end portion pivotally supported from the lower end portion of the mount for angular displacement of the arm about a horizontal axis extending transversely of the arm and in a front to rear direction relative to the tractor.