An arrangement (16) for controlling movements of an access member (12) relative to a frame (14), the arrangement (16) comprising abase section (18) for connection to either the access member (12) or the frame (14); a fixation part (20) for connection to the other of the access member (12) and the frame (14); a flexible elongated element (22) configured to be tensioned to thereby force the base section (18) and the fixation part (20) to move towards each other in a relative closing movement (86); and a braking device (82) arranged to brake a speed of the relative closing movement (86).

The self-locking guillotine door assembly includes a door, a locking mechanism attached to the door, and a cable attached to the locking mechanism. Pulling the cable releases the locking mechanism and lifts the locking mechanism and door. Pushing up on the bottom of the door locks the locking mechanism and resists lifting the door. The locking mechanism can include a post, a vertical slide with a slot, connector bars and cams such that when the cable is pulled, the cable lifts the vertical slide to lift proximal ends of the connector bars, which pivots the cams to release the locking mechanism. When the enclosure door is pushed up from the bottom, the locking mechanism pivots the cams towards the top of the enclosure door to lock the locking mechanism and resist lifting of the enclosure door.

A self-locking guillotine door assembly and method for an animal enclosure is disclosed. The assembly includes a door, a locking mechanism attached to the door, and a cable attached to the locking mechanism. Pulling the cable releases the locking mechanism and lifts the locking mechanism and door. Pushing up on the bottom of the door locks the locking mechanism and resists lifting the door. The locking mechanism can include a post, a vertical slide with a slot, connector bars and cams such that when the cable is pulled, the cable lifts the vertical slide to lift proximal ends of the connector bars, which pivots the cams to release the locking mechanism. When the enclosure door is pushed up from the bottom, the locking mechanism pivots the cams towards the top of the enclosure door to lock the locking mechanism and resist lifting of the enclosure door.

A closing device including a tubular cover; a rotating member disposed at least partially inside the cover; a torsion member connected between the cover and the rotating member; and a pulling member at least partially into the cover; the pulling connected to the rotating member; whereby extension of the pulling member away from the cover adjusts a torque in the torsion member to affect a closing. A method of closing a sliding screen door includes attaching the cover to a stationary member and attaching the pulling member to a sliding screen door. The door may be slid to an open position; whereby a torque in the torsion member is increased. The door may then be released; whereby the door is moved from the open position to a closed position by a linear force created in the pulling member through rotation of the rotating member by release of the torque.

The invention relates to a system for opening and closing a window aperture, the system comprising: a moveable window panel; a pulley assembly coupled to the moveable window panel; a counterweight; and a pulley actuation mechanism. The moveable panel is heavier than the counterweight, the latter being attached to a first lateral side of the moveable panel via a first part of the pulley assembly. The pulley actuation mechanism is attached to an opposite lateral side of the moveable panel via a second part of the pulley assembly. The pulley actuation mechanism is switchable between energised and non-energised states based on one or more trigger events, between a closing mode whereby the pulley actuation mechanism retracts the second part of the pulley assembly thus imparting an additional closing force to the moveable panel sufficient to raise the moveable panel; and an opening mode whereby the pulley actuation mechanism is non-energised such that a passive opening force is imparted to the moveable panel by virtue of its weight to lower the moveable panel. A system for controlling a window system based on aircraft detection is also disclosed.