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Numerous devices exist to serve specific purposes related to how a door should (or should not) be used. See: Door chain - A device to secure door opening; Door closer – Mechanical or electromagnetic device to close an open door (in the event of a fire) [3] Door opener - Automatic door opening device activated by motion sensors or pressure pads
In adjustable shelving systems, the bracket may be in two parts, with the load-bearing horizontal support fitting into a wall-mounted slotted vertical metal strip. Brackets also are an element in the systems used to mount modern facade cladding systems onto the outside of contemporary buildings, as well as interior panels.
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.
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A bow visor is a feature of some ships, in particular ferries and roll-on/roll-off ships, that allows the bow to articulate up and down, providing access to the cargo ramp and storage deck near the water line. [1] However, in modern ferry design over the last 45 years, bow visors have given way to clam doors. Instead of one large visor, two ...
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An anti-intrusion bar or beam is a passive safety device, installed in most cars and other ground vehicles, which must protect passengers from side impacts. [1] Side impacts are particularly dangerous for two reasons: a) the location of impact is very close to the passenger, who can be immediately reached by the impacting vehicle; b) in many side-impact accidents, the impacting vehicle may be ...