Aircraft door (1) including a safety latch (7) having a first locking element (8) and a complementary second locking element (9) which is movable; a link (11) having at least one electroactive polymer portion (13) and adapted to take up: a lock position in which the electroactive polymer portion (13) is supplied with power and the movable second locking element (9) is engaged with the first locking element (8); and an unlock position in which the electroactive polymer portion (13) is not supplied with power and the movable second locking element (9) is kept away from the first locking element (8); a control unit (16) having a power supply (26) for the electroactive polymer portion (13).

Aircraft door (1) including a safety latch (7) having a first locking element (8) and a complementary second locking element (9) which is movable; a link (11) having at least one electroactive polymer portion (13) and adapted to take up: a lock position in which the electroactive polymer portion (13) is supplied with power and the movable second locking element (9) is engaged with the first locking element (8); and an unlock position in which the electroactive polymer portion (13) is not supplied with power and the movable second locking element (9) is kept away from the first locking element (8); a control unit (16) having a power supply (26) for the electroactive polymer portion (13).

The present disclosure is directed generally to powered trailer systems and, more particularly, to powered trailer systems for opening and closing trailer doors at, e.g., a vehicle loading dock, and to vehicle and/or trailer power delivery and charging systems. A powered trailer door operating system can include a guide track having a lower guide track portion and an upper guide track portion; a drive support coupled to the upper guide track portion having a drive shaft positioned within a central cavity; and a carriage slidingly coupled to the drive support and operably coupled to the trailer door. The carriage can be operably engaged with the drive shaft through the slot such that rotation of the drive shaft causes the carriage to translate along the drive support, thereby moving the trailer door between the open and closed positions.

A door unit for an aircraft includes a door which is configured, in a closed position, to cover an opening in the vehicle and to delimit a vehicle interior from a vehicle environment; a pressure compensation flap which is configured, in a sealing position, to cover a pressure compensation opening in the door and, in a pressure compensation position, to at least partially release the pressure compensation opening; a locking element which is configured, in a locking state, to lock the door in the closed position and, in an unlocking state, to unlock the door; and a blocking element which is configured, in the sealing position of the pressure compensation flap, to block a movement of the locking element from the locking state into the unlocking state, wherein the blocking element is arranged on the pressure compensation flap.

A door unit for an aircraft includes a door which is configured, in a closed position, to cover an opening in the vehicle and to delimit a vehicle interior from a vehicle environment; a pressure compensation flap which is configured, in a sealing position, to cover a pressure compensation opening in the door and, in a pressure compensation position, to at least partially release the pressure compensation opening; a locking element which is configured, in a locking state, to lock the door in the closed position and, in an unlocking state, to unlock the door; and a blocking element which is configured, in the sealing position of the pressure compensation flap, to block a movement of the locking element from the locking state into the unlocking state, wherein the blocking element is arranged on the pressure compensation flap.

A securing mechanism for a vehicle door. The securing mechanism includes: a locking system which includes a locking element configured, in a locking position of the locking element, to lock the vehicle door in a closed position and, in an unlocking position of the locking element, to unlock the vehicle door; a securing element configured, in a securing position, to block a locking element movement from the locking position into the unlocking position in a first direction and, in a release position, to release the movement of the locking element from the locking position into the unlocking position in the first direction; and an actuator configured to move the securing element from the release position into the securing position and/or from the securing position into the release position. The securing element is configured, in the securing position, to release a movement of the locking element in a second direction.

An electro-mechanical unlocking device that includes a locking state, a holding state and an unlocking state. The unlocking device includes an arming solenoid and a holding solenoid. In the locking state the arming solenoid moves an arming assembly, which moves a crank and which moves a holding armature from a second position to a first position. In the holding state the holding solenoid is energized and the arming solenoid is de-energizing, which allows the arming armature to moves from the first position to the second position. In the unlocking state the holding solenoid is de-energized, which allows the holding armature and the arming link to move from the first position to the second position. In the locking and holding states a sear blocks the path of the striker and in the unlocking state the sear does not block the path of the striker.

An electro-mechanical unlocking device that includes a locking state, a holding state and an unlocking state. The unlocking device includes an arming solenoid and a holding solenoid. In the locking state the arming solenoid moves an arming assembly, which moves a crank and which moves a holding armature from a second position to a first position. In the holding state the holding solenoid is energized and the arming solenoid is de-energizing, which allows the arming armature to moves from the first position to the second position. In the unlocking state the holding solenoid is de-energized, which allows the holding armature and the arming link to move from the first position to the second position. In the locking and holding states a sear blocks the path of the striker and in the unlocking state the sear does not block the path of the striker.

A control system for a construction machine includes a tilt sensor for detecting an inclination angle of the construction machine parked on a slope, a door latch device including a lock/unlock actuator configured to lock/unlock a door of the construction machine according to a door lock control signal and a door unlock control signal and a release actuator configured to release the door according to a door release control signal, and a smart key module configured to output the door unlock control signal and the door release control signal when the inclination angle of the construction machine is within a preset safe range in case that an unlocking event signal is detected while a smart key is recognized.

A control system for a construction machine includes a tilt sensor for detecting an inclination angle of the construction machine parked on a slope, a door latch device including a lock/unlock actuator configured to lock/unlock a door of the construction machine according to a door lock control signal and a door unlock control signal and a release actuator configured to release the door according to a door release control signal, and a smart key module configured to output the door unlock control signal and the door release control signal when the inclination angle of the construction machine is within a preset safe range in case that an unlocking event signal is detected while a smart key is recognized.