Abstract: A tractor trailer battery system having a battery compartment containing one or more battery units which house one or more battery cells, electrical leads from the battery units to a trailer mounted controller in electrical communication with a cab mounted controller which is in electrical communication an electric motor or hybrid engine system. The battery system allows for either the trailer mounted controller or the cab mounted controller to provide principal communication to the electric motor or hybrid engine system.

Abstract: A cup and/or food holding tray for stable storage and movement of food/beverage containers, having a center cup basin and periphery cup basins about the center cup basin, wherein each cup basin is capable of receiving and securely holding a food/beverage container. The invention further comprises ribbing between adjacent cup basins. The center cup basin and the ribbing provide for increased structural rigidity of the cup holding tray of the invention. The cup basins are defined by multiple planar support walls.

Abstract: A semi-trailer structure swinging door system having one or more doors capable of swinging on double pivoting joints such that said door or doors can be opened both outward of the cargo containment structure and inward into the cargo containment structure. Various aspects of the joint provide for the joint as an insert and the joint having a sigmoid shape construction; the doors are capable of being secured by a latching mechanism in a closed position.

Abstract: A tractor trailer battery system having a battery compartment containing one or more battery units which house one or more battery cells, electrical leads from the battery units to a trailer mounted controller in electrical communication with a cab mounted controller which is in electrical communication an electric motor or hybrid engine system. The battery system allows for either the trailer mounted controller or the cab mounted controller to provide principal communication to the electric motor or hybrid engine system.

Abstract: A tractor trailer battery system having a battery compartment containing one or more battery units which house one or more battery cells, electrical leads from the battery units to a trailer mounted controller in electrical communication with a cab mounted controller which is in electrical communication an electric motor or hybrid engine system. The battery system allows for either the trailer mounted controller or the cab mounted controller to provide principal communication to the electric motor or hybrid engine system.

Abstract: A tractor trailer battery system having a battery compartment containing one or more battery units which house one or more battery cells, electrical leads from the battery units to a trailer mounted controller in electrical communication with a cab mounted controller which is in electrical communication an electric motor or hybrid engine system. The battery system allows for either the trailer mounted controller or the cab mounted controller to provide principal communication to the electric motor or hybrid engine system.

Abstract: A cargo containment structure swinging door system having one or more doors capable of swinging on double pivoting hinges such that said door or doors can be opened both outward of the cargo containment structure and inward into the cargo containment structure. The doors are capable of being secured by a latching mechanism in a closed position. The cargo containment structure may be a semi-trailer, cargo shipping container or straight van body of a cargo carrying truck.

Abstract: The present invention is a tray apparatus providing mobility of a Christmas tree in a tree stand. The invention comprises a pan for placing the tree stand and a releasably attached handle. The improved mobility provided by the smooth, low-friction pan and removable handle of the present invention assists in decoration of the tree by allowing rotation for placing lights and ornaments, or other decorating tasks, as well as to present a favored side toward a desired area of the room in which it is placed. The tree may also be decorated in any convenient location and then moved laterally into the desired final position. In addition to the relatively frictionless movement provided by the pan, it also provides a basin to contain any water that spills from the stand, to catch needles, to hold presents, and to protect the floor or carpet.