Abstract: A cable lock for doors in which a loop at one end of a cable is attached by a bolt or screw to a building wall adjacent to a door and a larger loop at the opposite end of the cable is applied over and around a doorknob to limit the extent to which the door may be opened. In one embodiment of the lock, a metal sleeve encircles the major portion of the cable between the end loops. The metal sleeve increases the resistance of the device to cutting by bolt cutters, saws, and other burglary tools. A sleeve of resilient material encircles at least part of the cable between the end loops and serves to protect the door and door frame from damage upon contact of the cable therewith.

Abstract: An air deflector used in combination with a vehicle pulling a trailer. The air deflector is of a V-shaped, concave, two-bladed construction. The blades are attached to the vehicle in a spaced position above the vehicle roof and in front of the trailer so as to cause the air to be deflected around and over the front of the trailer as the vehicle pulls the trailer along the road.