Abstract: A behavioral attention control apparatus and method for treating the short attention span of a child viewing a television that requires the child to respond to an alert signal within a specific window period to prevent the television from turning off. A specialized remote control component has a switch that must be triggered by the child to initially turn on the television and then retriggered periodically to keep the television turned on. A timer defines a window period during which the child must make a valid retrigger. After an interval with the television on, the window period opens and the child is alerted to the opening of the window period by lights and sound. If a valid retrigger is not made during the window period, the television is turned off. The remote control component is desirably housed in an enclosure that would be appropriately attractive to a child. In one embodiment, the enclosure is shaped like a frog and the sound alert is a frog-like “ribbet” sound.

Abstract: A trailer dolly includes an internal combustion engine, a transmission providing both forward and reverse drives, and a centralized lifting handle. The internal combustion engine provides much better power and much less weight than electric counterparts. The forward/reverse transmission includes a sliding shaft which engages a select one of two bevel gears with a larger bevel gear to select forward or reverse drive. The sliding shaft slides along with an elongated clutch cylinder of a centrifugal clutch. An alternative transmission uses sprockets and chains to obviate a case to enclose lubricant. Counter-rotating sprockets alternatively engage a dog-tooth gear to select either forward or reverse drive. The lifting handle mounted generally at the center of gravity (with the trailer dolly in a substantially horizontal position) makes single-handed lifting and carrying of the trailer dolly quite easy.