Abstract: A foot lever assist mechanism permits transport dollies to be more heavily loaded, saving the worker additional trips to deliver the entire supply. The lever assist is preferably secured to the axle using at least one boss. An auxiliary feature of this lever assist is the provision of a telescoping ladder-like extender for supporting beverage kegs. A toe grab allows the workman to tilt the stack of cases off of the hand truck's support platform and pull the bottom of the hand truck from beneath the load. Brakes are also provided to resist the hand truck's tendency to move rearwardly when tilting is attempted.

Abstract: A pickup drop off lock box for medical samples is equipped with a failsafe lock which will not permit the key to be removed without the lid properly positioned to permit latching. Adequate thermal insulation is provided to allow samples to be stored at temperatures of 5° F. for 16 hours. In addition, an inner liner of styrene insulation is removable/replaceable in the event it becomes worn, soiled or damaged. The failsafe lock has potential applicability in other environments.

Abstract: A power supply for use in a computer terminal capable of providing a plurality of direct voltage signals to the computer terminal logic system while isolating this logic circuitry from the line voltage is disclosed. A high frequency power supply transformer and associated circuitry provides the various direct voltage signals to the computer terminal logic system and provides isolation between the line input and logic circuitry. Parallel isolation is provided by a horizontal sync coupling circuit which is driven by the logic system and which, in turn, synchronizes the horizontal deflection system. The direct voltage signals provided to the logic supply system are both scan- and pulse-derived from the horizontal sweep signal permitting various computer terminal systems to be operated by display-derived power output signals.