Abstract: A self-operating automatic control system and process is provided to automatically measure the gross weight, load, and length of trucks, such as at refineries, truck terminals, and depots. A central processing unit compares the truck's weight and length with state highway regulations and activates a laser printer or another printer to print a bill of lading when the measured weight is within legal limits. The system and process can also have various safety and weight indicators as well as a regulated control dispenser coupled to the central processing unit to automatically and remotely dispense authorized legal amounts of the load of material, such as gasoline or oil, into the trucks.

Abstract: A pet door comprises a frame hingedly supporting a flap undersized relative to the opening therefor in the frame; the resulting gaps therebetween are weatherproofed by sealing means in part constituted by co-extensive plastics magnet strips on confronting edges of the flap and frame. One magnet strip at least is mounted for movement in a direction across the gap into and out of face-to-face sealing contact with the other magnet strip, respectively as the flap enters and leaves its closed position; the movement is responsible for jam-free closing and opening.