Abstract: Described is a remotely controlled miniature model trash truck with operating features that simulate those of a full size trash truck. The truck features moveable and controllable forks, fork frames, top access door, rear door, and an ejector blade. The mechanisms are remotely controllable by a direct current electric motor. The preferred motors are electric servo motors. The doors are actuable by the motors rotating eccentrics which are linked by rigid rods to the operating doors. An ejector blade is longitudinally moveable within the truck body by threadable engagement with a electric motor driven lead screw longitudinally mounted between the front end and rear opening of the truck box. The front fork frame is pivotally attached to the truck chassis and swingable between a loading position and dumping position by controllable excitation of a remotely controlled motor. Front forks are pivotally attached to the fork frame and positionable by actuation of a remotely controlled motor.

Abstract: A model trailer is provided of the type for hauling trash from a collection point to a disposal site. The trailer has a frame, a hitch at one end of the frame and wheels at the other end. The trailer also has a trailer body including a base, a front wall, opposite side walls and a side-hinged rear gate. Within the trailer body is a remote radio controlled pusher blade which can be moved longitudinally of the trailer body to discharge contents of the trailer.

Abstract: Apparatus and method for accurate measuring and mixing of chemicals is disclosed. The apparatus includes one or more metered vessels having a container of predetermined volume and at least one constricted vent tube therein. By mounting a sensor on the constricted vent tube, a greatly amplified measurement of the precise chemical volume in the metered vessel is provided. The apparatus and method of the present invention readily lends itself to a variety of applications and can be adapted to handle virtually any form of chemical mixing, diluting, or generating process.