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A crash bar (also known as a panic exit device, panic bar, or bump bar) [1] [2] is a type of door opening mechanism which allows users to open a door by pushing a bar. While originally conceived as a way to prevent crowd crushing in an emergency, crash bars are now used as the primary door opening mechanism in many commercial buildings.
A suicide door on a Delahaye Type 135 Lincoln Continental with rear suicide doors, left-side doors open. A suicide door is an automobile door hinged at its rear rather than the front. [1] Such doors were originally used on horse-drawn carriages [2] but are rarely found on modern vehicles, primarily because they are less safe than front-hinged ...
The space enclosed in a church between the outer gate or railing of the rood screen and the door of the screen. Apron 1. A raised panel below a window or wall monument or tablet. 2. An open portion of a marine terminal immediately adjacent to a vessel berth, used in the direct transfer of cargo between the vessel and the terminal. 3.
Each door will have different wards and can only be opened by the correctly warded key or the master key. A skeleton key has the warded section of the key removed so that it opens all the doors of a system. Some applications, such as a building with multiple entrance doors, have numerous locks that are keyed alike; one key will open every door.
Dooring is the act of opening a motor vehicle door into the path of another road user. [1] [2] Dooring can happen when a driver has parked or stopped to exit their vehicle, or when passengers egress from cars, taxis and rideshares into the path of a cyclist in an adjacent travel lane.
At a residential building, a doorperson is responsible for opening doors and screening visitors and deliveries. They will often provide other courtesy services such as signing for packages, carrying luggage between the elevator and the street, or hailing taxis for residents and guests.
Automatically opening doors are powered open and closed either by electricity, spring, or both. There are several methods by which an automatically opening door is activated: A sensor detects traffic is approaching. Sensors for automatic doors are generally: A pressure sensor – e.g., a floor mat which reacts to the pressure of someone ...
The dihedral synchro-helix actuation door system is a type of door with a hinge mechanism which allows the doors to rotate 90° by sweeping outwards and upwards at the hinge. [1] It was designed and developed by Christian von Koenigsegg on behalf of high-performance sports cars manufacturer, Koenigsegg Automotive AB . [ 2 ]