A door opening and closing operating system includes a pressurized fluid source (102), two fluid control push pull valves (144a), (144b), and a double acting cylinder (160) which is mounted to the movable element of a door (66) mounted within its adjacent frame (62) for the purpose of opening and closing the door. This system utilizes two push pull valves connected fluid-wise to opposite sides of the piston. Activating or energizing one push pull valve while deactivating the second push pull valve connects the first cylinder chamber to the pressurized fluid source, and vents the second chamber, thereby pushing the piston in a first direction, which pushes the door in a first direction. Energizing the second push pull valve and de-energizing the first push pull valve has the opposite effect, and moves the piston and attached door in a second direction opposite the first direction.

A hydraulic circuit mechanically linked to a panel and agricultural harvesters including the same. The hydraulic circuit can be used to facilitate the transition of hydraulic states from a quick speed to a slow speed, when opening and closing the panel. The hydraulic circuit includes a restrictive orifice and a fluid stop valve that, when opened, diverts the path of pressurized fluid away from a hydraulic actuator during the actuator's extension. The diversion of pressurized fluid away from the hydraulic cylinder or through the restrictive orifice substantially reduces the speed at which the panel opens or closes.

A hydraulic circuit mechanically linked to a panel and agricultural harvesters including the same. The hydraulic circuit can be used to facilitate the transition of hydraulic states from a quick speed to a slow speed, when opening and closing the panel. The hydraulic circuit includes a restrictive orifice and a fluid stop valve that, when opened, diverts the path of pressurized fluid away from a hydraulic actuator during the actuator's extension. The diversion of pressurized fluid away from the hydraulic cylinder or through the restrictive orifice substantially reduces the speed at which the panel opens or closes.

The disclosure relates to a pneumatic control system for a working cylinder, which pneumatic control system enables resistance-free manual motion of the device driven by the working cylinder in the event of a failure or switch-off of the compressed air supply and is independent of electrical supply. The problem is solved by means of a pneumatic control system having a double-acting working cylinder, the two chambers of which can be connected oppositely to a compressed air source and a compressed air outlet by means of a controllable supply device having two operating positions, an independently resetting 3/2-way valve switchable by means of a control pressure being arranged before each chamber in a connecting line to the supply device, which 3/2-way valves connect the chambers to bleeding outlets in a first switching position and to the supply device in a second switching position, and a parallel circuit of a check valve and a throttle point being arranged before each chamber, the check valves of which parallel circuits block in the backflow direction, wherein the two 3/2-way valves assume the first switching position in the idle position and can be switched by means of a common control line, which is connected to both connecting lines to the supply device downstream of the 3/2-way valves by means of a changeover valve, and the parallel circuits are arranged in the connecting lines downstream of the respective 3/2-way valves.

The disclosure relates to a pneumatic control system for a working cylinder, which pneumatic control system enables resistance-free manual motion of the device driven by the working cylinder in the event of a failure or switch-off of the compressed air supply and is independent of electrical supply. The problem is solved by means of a pneumatic control system having a double-acting working cylinder, the two chambers of which can be connected oppositely to a compressed air source and a compressed air outlet by means of a controllable supply device having two operating positions, an independently resetting 3/2-way valve switchable by means of a control pressure being arranged before each chamber in a connecting line to the supply device, which 3/2-way valves connect the chambers to bleeding outlets in a first switching position and to the supply device in a second switching position, and a parallel circuit of a check valve and a throttle point being arranged before each chamber, the check valves of which parallel circuits block in the backflow direction, wherein the two 3/2-way valves assume the first switching position in the idle position and can be switched by means of a common control line, which is connected to both connecting lines to the supply device downstream of the 3/2-way valves by means of a changeover valve, and the parallel circuits are arranged in the connecting lines downstream of the respective 3/2-way valves.

An emergency vehicle door opening system includes a vehicle assembly with a body having an opening therein to allow passenger entry. The opening has a front edge, a rear edge, a top edge, and a bottom edge. A door is pivotally coupled to the body adjacent to the front edge and is positionable in a closed position closing the opening or in an open position exposing the opening. The door has an inner edge positioned adjacent to the front edge and an outer edge positioned opposite of the inner edge. An opening assembly is mounted on the vehicle assembly. The opening assembly is mounted on the vehicle and moves the door from an ajar position to a fully open position when the opening assembly is actuated. The outer edge of the door moves at a speed greater than 30 mph when the opening assembly moves the door.

A sensor for an anti-entrapment system of a vehicle for preventing an object within an opening of the vehicle defined by a movable panel from being pinched by the movable panel includes a seal adapted to be mounted to a portion of the vehicle, an electrically conductive mounting carrier disposed in the seal and having a formed shape and operable to detect the object in the path of the movable panel and to generate a pinch sensor signal indicative of the object either touching the seal or in close proximity to the seal, and a controller for monitoring the electrically conductive mounting carrier, wherein the controller controls the movable panel to prevent the movable panel from pinching the object in response to the pinch sensor signal.

A sensor for an anti-entrapment system of a vehicle for preventing an object within an opening of the vehicle defined by a movable panel from being pinched by the movable panel includes a seal adapted to be mounted to a portion of the vehicle, an electrically conductive mounting carrier disposed in the seal and having a formed shape and operable to detect the object in the path of the movable panel and to generate a pinch sensor signal indicative of the object either touching the seal or in close proximity to the seal, and a controller for monitoring the electrically conductive mounting carrier, wherein the controller controls the movable panel to prevent the movable panel from pinching the object in response to the pinch sensor signal.

A door for closing a chamber opening in a chamber wall of a vacuum chamber in relation to a surrounding space, in which the vacuum chamber is located, includes a door housing arranged, a closing member arranged in the surrounding space, and a rod, to which the closing member is connected. A first movement of the rod, through which the closing member is displaced from an open position into an intermediate position, occurs as a displacement of the rod in a longitudinal axis direction, and a second movement of the rod subsequent thereto is a displacement at an angle to the longitudinal axis or a pivoting about a pivot axis which is perpendicular to the longitudinal axis from the intermediate position into a closed position. The rod is moveably mounted via the bearing elements, that are arranged in an inner space of the door housing that is sealed with respect to the surrounding space or is connected to the surrounding space via a passage, with a filter, extending through a housing wall of the door housing. The rod is guided out of the inner space in a sealed manner.

A door for closing a chamber opening in a chamber wall of a vacuum chamber in relation to a surrounding space, in which the vacuum chamber is located, includes a door housing arranged, a closing member arranged in the surrounding space, and a rod, to which the closing member is connected. A first movement of the rod, through which the closing member is displaced from an open position into an intermediate position, occurs as a displacement of the rod in a longitudinal axis direction, and a second movement of the rod subsequent thereto is a displacement at an angle to the longitudinal axis or a pivoting about a pivot axis which is perpendicular to the longitudinal axis from the intermediate position into a closed position. The rod is moveably mounted via the bearing elements, that are arranged in an inner space of the door housing that is sealed with respect to the surrounding space or is connected to the surrounding space via a passage, with a filter, extending through a housing wall of the door housing. The rod is guided out of the inner space in a sealed manner.