Abstract: A system for charging batteries of electric vehicles from public fixtures such as street lights and parking meters includes modifying the fixture to convert it to a vehicle battery charging station using a power interface module having a novel keyed electrical power output receptacle connectable to power mains powering the fixture. The system includes a complementarily coded, keyed plug which must be inserted into the power output receptacle to access electrical power from the receptacle, the plug being located at the input end of vehicle charger cable terminated at output end thereof by a vehicle-mounted charge control system which will actuate a charging current contactor permitting charging current to flow from the receptacle to batteries within the vehicle only if a pre-paid charge authorization payment device, such as a magnetically or electronically encoded charge card is inserted into a charger station access enable device such as card reader mounted in the vehicle.

Abstract: A freight storage container includes six rectangularly-shaped panels including a base panel, a front end panel hingedly fastened to a front edge of the base panel and pivotable into overlying contact therewith, and a rear panel hingedly fastened to a rear edge of the base panel and pivotable downwards to overlie the front end panel. The container is assembled on-site by folding upwardly the rear and front panels, installing two side panels in the base, and fastening a roof panel to upper peripheral edge walls of the side and end panels, by novel fastener joints each consisting of a tubular hinge lug member protruding downwards from a lower inside surface of the roof panel, a coaxially aligned tubular side panel hinge lug member protruding inwardly from a side panel, and a stainless steel friction pin forced into an interference fit within coaxially aligned bores of the two lugs.

Abstract: An apparatus for inhibiting wide dispersal of heat, smoke and noxious gases from a fire in a structure such as a building occupied by people, thereby facilitating evacuation of the building through exit routes rendered relatively smoke-free by the apparatus includes a portable enclosure which has an entrance opening hermetically sealable to a doorway opening when the enclosure is moved into position adjacent to the doorway, and encloses an open-top tank which contains water, and a vertical baffle which protrudes downwardly from a roof panel of the enclosure, the baffle being disposed transversely across the enclosure with a lower edge of the baffle immersed beneath the surface of the water to thereby form a water-trap type air-lock.

Abstract: An apparatus for inhibiting wide dispersal of heat, smoke and noxious gases from a fire in a structure such as a building occupied by people, thereby facilitating evacuation of the building through exit routes rendered relatively smoke-free by the apparatus includes a portable enclosure which has an entrance opening hermetically sealable to a doorway opening when the enclosure is moved into position adjacent to the doorway, and encloses an open-top tank which contains water, and a vertical baffle which protrudes downwardly from a roof panel of the enclosure, the baffle being disposed transversely across the enclosure with a lower edge of the baffle immersed beneath the surface of the water to thereby form a water-trap type air-lock.

Abstract: A freight storage container includes six rectangularly-shaped panels including a base panel, a front end panel hingedly fastened to a front edge of the base panel and pivotable into overlying contact therewith, and a rear panel hingedly fastened to a rear edge of the base panel and pivotable downwards to overlie the front end panel. The container is assembled on-site by folding upwardly the rear and front panels, installing two side panels in the base, and fastening a roof panel to upper peripheral edge walls of the side and end panels, by novel fastener joints each consisting of a tubular hinge lug member protruding downwards from a lower inside surface of the roof panel, a coaxially aligned tubular side panel hinge lug member protruding inwardly from a side panel, and a stainless steel friction pin forced into an interference fit within coaxially aligned bores of the two lugs.