A door actuator for opening and/or closing a door, includes a fluid housing with an inner compartment, which is filled with fluid, in particular hydraulic oil, a fluid housing opening in the fluid housing for draining the fluid at thermal overload, a thermally activatable valve for opening, which closes the fluid housing opening, and a collecting device, which is disposed outside the fluid housing opposite the fluid housing opening, forms a collecting space for the fluid, is open towards the fluid housing opening, and includes at least one drain opening for draining the fluid from the collecting space.

A security door configured to provide controlled access through a doorway wherein the security door of the present invention includes all elements to offer a touch-less entry and further provide compliance with building codes and visual surveillance. The security door of the present invention includes a door member being hingedly mounted on a doorway. The door member includes an integrally mounted controller that is operably coupled to a communications network via a network module and communications cable. The controller is operably coupled to a card scanner module and a switch module that operate to provide verification of an individual and move the door member to an open position. The door member further includes an integrally mounted power supply and at least one camera module wherein the camera module is operable to capture photographic images. A light module and egress module are integrally mounted to the door member.

A thermally releasable fastening element, in particular for fastening a door actuator, includes a base body, which is designed to be inserted into a recess or a number of aligned recesses, a core inserted into the base body, at least partially made of a shape memory material, wherein the base body has an unstable area, which is stabilized by the core, and wherein the core is designed to withdraw at least partially from the unstable area upon thermal activation of the shape memory material.

An apparatus comprises a base plate configured to be coupled to a door, the door configured to be positioned in an open position and a closed position; a closing mechanism coupled to the base plate and configured to be coupled to a hinge of the door and having an unprimed state and a primed state, the closing mechanism configured to be transitioned between the unprimed state and the primed state by a user; wherein in the unprimed state the closing mechanism is decoupled from operation of the door; and in the primed state the closing mechanism is configured to move the door into the closed position responsive to receipt of a signal, and the closing mechanism is configured to allow movement of the door between the open position and the closed position in absence of the signal.

The present invention provides an aircraft passenger accommodation unit comprising a seat, a shell that allows a passenger egress between an aisle and the seat through an opening, and a door assembly comprising a door slidable with respect to the shell between a retracted position and an extended position, a slide track attached to the shell, a slide runner for sliding along the slide track, and a connection mechanism for selectively connecting the door to the slide runner, wherein the door has a first sliding mode in which the connection mechanism connects the door to the slide runner and wherein the slide runner slides along the slide track, and a second sliding mode in which the connection mechanism does not connect the door to the slide runner and wherein the door slides in relation to the slide track. The invention also provides a door arrangement and associated methods.

A pneumatic control device of auto door includes a first directional control valve configured to control a direction of a compressed air supplied to a door cylinder for opening and closing a door, a door detection sensor configured to detect an open/close state of the door, first and second exhaust lines respectively connected to first and second outlet ports of the first directional control valve, and second directional control valves installed in the first and second exhaust lines respectively to operably exhaust the compressed air exhausted from the first and second outlet ports according to an emergency stop signal, and capable of changing positions to reduce an exhaust speed of the compressed air in case that the door is not completely open or closed when an operation signal is generated after the emergency stop signal.

A G-sensor for an automobile tray, and more particularly, a G-sensor for an automobile tray wherein a G-sensor for preventing a tray cover from being opened by an external force generated when the vehicle travels is modularized. The G sensor includes a lever configured to rotate around a hinge shaft, a slider coupled to the lever and guided along a key hole according to the state of rotation of the lever, a weight coupled to the lever for endowing a rotational moment of the lever around the hinge shaft, and a spring to provide the lever with power such that the same returns to the original condition.

An automatic disengaging linkage system including a housing operably connectable to a garage door trolley and a garage door arm. The housing can define a main bore configured to receive a portion of the garage door arm. A ball can be receivable in a ball bore defined in the housing. A biasing member can be configured to force the ball in engagement with the garage door arm or an arm pin associated with the garage door arm. The ball or the biasing member can be configured to disengage with the garage door arm with the housing when a predetermined pulling force is applied to the housing. The garage door arm can automatically be disengaged with the housing upon encounter a sufficient pulling force that retracts the ball into its ball bore thereby allowing the garage door arm to move freely out from the main bore.

Disclosed is a sliding window emergency opening system, comprising: an emergency opening device (2) and a general opening control device (3); wherein a first rotary shaft (202) in the emergency opening device is rotatably mounted on a first base (201); a first pulling cable (206) is wound around the first rotary shaft (202), and one end thereof is connected with a movable sash of the sliding window (1); a first ratchet (203) is fixedly connected with the first rotary shaft (202); a first elastic component is compressed to make a first pawl (204) abut against the first ratchet (203); a second rotary shaft (302) in the general opening control device (3) is rotatably mounted on a second base (301); one end of a general control pulling cable (303) is connected with the second rotary shaft (302), and the other end is connected with the first pawl (204); when the second rotary shaft (302) rotates, the general control pulling cable (303) is wound up to make the first pawl (204) detached from the first ratchet (203); under the action of the gravity of the movable sash in the sliding window, the first pulling cable (206) drives the first rotary shaft (202) to rotate so as to open the movable sash. In practical application, the general opening control device (3) may be provided at a location far from the emergency opening device (2), and the emergency opening device may be remotely controlled to open the movable sash.

The hold-open arrester arrangement has a hold-open arrester arrangement having a hold-open function to hold a door open. The arrangement has also an electric release arrangement. The release arrangement is arranged to release the hold-open function in a fire alarm situation. The hold-open arrester arrangement comprises a sliding block and an arrester unit. The sliding block is connectable with a slide rail in a sliding manner and also pivotable connectable to an arm of a door closer. The arrester unit is connectable to the slide rail and has a body, said electric release arrangement, and said hold-open function with the sliding block.