Abstract: Various configurations of drive units for tarpaulin cover systems, particularly for use on vehicle bodies, are disclosed. Exemplary drive units include a gear arrangement configured to attach to an upper perimeter section of an open-top structure and at least one motion initiating device coupled to the gear arrangement. The gear arrangement can include a left spur gear attached to a left cable holder/pulley and a right spur gear attached to a right cable holder/pulley. A motion initiating device is configured to impart a force that initiates rotation of the left spur gear and the right spur gear in opposite directions and movement (i.e. retraction and extension) of a tarpaulin coupled to the gear arrangement. The motion initiating device can be either a crank, which is driven manually, or a motor, which is driven electrically. In other configurations, at least two bevel gears or at least one secondary spur gear are coupled to the motion initiating device.

Abstract: A sheltered aircraft supply vehicle includes an entrance station located above the cab of the vehicle. The vehicle body is elevatable. A cover system is mounted to the vehicle body and is extended outwardly above the entrance station when the body is elevated. The cover system includes a roof section disposed over the entrance station and includes downwardly depending wings which contact side walls of the entrance station to create a closed tunnel between the vehicle body and an aircraft.

Abstract: A sheltered aircraft supply vehicle includes an entrance station located above the cab of the vehicle. The vehicle body is elevatable. A cover system is mounted to the vehicle body and is extended outwardly above the entrance station when the body is elevated. The cover system includes a roof section disposed over the entrance station and includes downwardly depending wings which contact side walls of the entrance station to create a closed tunnel between the vehicle body and an aircraft.

Abstract: A tarpaulin cover system includes a transmission assembly associated with a cable pulley system for selectively moving the tarpaulin to a covering and to uncovering position over the top of a vehicle bed. The transmission assembly includes an upper rod secured to the tarpaulin and a lower rod mounted to the cable. A spring interconnects the upper rod and the lower rod to dispose the two rods in general alignment when the tarpaulin is being moved and to permit the upper rod to be moved toward a horizontal non-alignment condition when the tarpaulin is in its completely covering and completely uncovering positions.

Abstract: A portable fencing system includes a plurality of fence sections each of which terminates in feet which are selectively mounted in base blocks. Each base block includes a section made in the form of a skin having a hollow chamber therein with filler material inserted in the chamber.

Abstract: A tarpaulin cover system for covering and uncovering a vehicle body in accordance with a winding mechanism includes a plurality of spaced catch members secured on each of the sides of the two sides of the vehicle body. The tarpaulin extends partially down each side. A plurality of spaced lock members are provided on the sideward extensions of the tarpaulin corresponding to the number of catch members. Each lock member on the tarpaulin is disposed for being automatically engaged by a respective one of the catch members during the covering motion of the tarpaulin and automatically disengaged during the uncovering motion.