A dump gate system for a fluid hopper in a firefighting aircraft. A gate sealably engages a gate opening in the hopper at a closed position. The gate is hingedly connected about the gate opening, and a drive shaft is supported within the hopper. A crank arm is fixed to the drive shaft and is further coupled to the gate by a connecting link. The crank arm and the connecting link define an over-center geometry while the gate is at the closed position, such that weight of the fluid on the gate induces torque on the drive shaft in a gate-closing direction. An electric motor is selectively coupled to rotate the drive shaft in a gate-opening direction to thereby enable control of the fluid flow from the hopper according to an angular position of the drive shaft.

Door operator systems are described herein that include the use of an adaptor. It should be understood that the adaptor may be utilized in order to operatively couple separate door operator assemblies together in a double door operator system. The adaptor may include control components (e.g., switches, buttons, toggles, levers, or the like) that are used to turn the door operator system on and off. While the adaptor may be used to operatively couple two separate door operator assemblies together to form a double door operator system, the adaptor may also be used within a single door operator system. Furthermore, with respect to double door operator systems, the system may also utilize a back plate assembly comprising two or more separate back plates (e.g., two or more back plate portions).

A train door control method and system are provided. The train door control method includes: acquiring a first train identifier and a second train identifier when multiple trains park in a platform at the same time, a door of a first train to which the first train identifier belongs being to be opened at a current time point, and a second train to which the second train identifier belongs being a train arranged behind the first train, which enters the platform and parks in the platform; and controlling the opening and closing of the door of the first train and a door of the second train at different time points respectively according to the first train identifier and the second train identifier.

A door synchronizing assembly is provided having two doors for closing an opening to an enclosure, such as an oven cavity. Each door has a hinged outer edge at which the corresponding door pivots relative to the housing of the enclosure and a fixation point. A central linkage is provided adjacent a surface of the housing of the enclosure. The central linkage translates substantially in a direction perpendicular to a plane of the opening of the enclosure. As such, the central linkage translates towards and away from the door opening. First and second rigid elongated elements are provided, each of which link the central linkage with the fixation point of a corresponding door of the two doors. Movement of one of the two doors causes a translation of the central linkage which in turn generates a corresponding movement of the second of the two doors.

A door synchronizing assembly is provided having two doors for closing an opening to an enclosure, such as an oven cavity. Each door has a hinged outer edge at which the corresponding door pivots relative to the housing of the enclosure and a fixation point. A central linkage is provided adjacent a surface of the housing of the enclosure. The central linkage translates substantially in a direction perpendicular to a plane of the opening of the enclosure. As such, the central linkage translates towards and away from the door opening. First and second rigid elongated elements are provided, each of which link the central linkage with the fixation point of a corresponding door of the two doors. Movement of one of the two doors causes a translation of the central linkage which in turn generates a corresponding movement of the second of the two doors.

A dump gate system for a fluid hopper in a firefighting aircraft. A gate sealably engages a gate opening in the hopper at a closed position. The gate is hingedly connected about the gate opening, and a drive shaft is supported within the hopper. A crank arm is fixed to the drive shaft and is further coupled to the gate by a connecting link. The crank arm and the connecting link define an over-center geometry while the gate is at the closed position, such that weight of the fluid on the gate induces torque on the drive shaft in a gate-closing direction. An electric motor is selectively coupled to rotate the drive shaft in a gate-opening direction to thereby enable control of the fluid flow from the hopper according to an angular position of the drive shaft.

A glass panel system comprising an upper and lower guide track and at least two adjacent glass panels which are movable along the lower and upper guide tracks. The lower guide track is configured to support at least two glass panels. The upper guide track comprises two opposite side walls, an elongated groove and a free space formed between the two side walls. One of the glass panels leans against both the side walls by one guide element and against one of the two side walls and against another glass panel by another guide element. One of the glass panels leans, on one hand, against one of the two side walls and against another glass panel by one guide element and, on the other hand, against the other side wall and against another glass panel by another guide element. The guide elements are arranged in the free space.

An assembly for controlling the position of air inlets of an enclosure including an actuation rod which moves laterally and is positioned above and parallel with the air inlets, one or more actuation cables, where the first end of each actuation cable is attached to the actuation rod and the second end of each cable is attached to one or more of the air inlets and lateral movement of the actuation rod causes vertical movement of the actuation cables and attached air inlets.

A versatile door system for a vehicle having a frame with an opening. The door system includes a door assembly including a hingeable door and a slidable door. The hingeable door is hingeably coupled to the frame proximate the opening. The slidable door is slidably coupled to the hingeable door. A rail system includes a segmented upper rail having a first portion coupled to the frame and a second portion formed on an exterior side of the hingeable door. The slidable door includes a slider bearing configured to sequentially engage the first and second portions of the segmented upper rail along a path of travel of the slidable door. In a closed configuration, the hingeable door and the slidable door are securably disposed within the opening. The hingeable door and the slidable door are configured to collectively provide access to selectable portions of the opening.

An apparatus for actuating a door on a vehicle, the door including a first panel and a second panel both movable between an open position and a completely closed position. A first motor is operatively connected with the first pane for moving the first panel and a second motor operatively connected with the second panel for moving the second panel. A first striker/latch assembly is disposed adjacent the first panel, and a second striker/latch assembly disposed adjacent the second panel. A computer is electrically connected with the first motor, the second motor, the first striker/latch assembly and the second striker/latch assembly.