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Crash bar. 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.
Electric strike with monitoring contact. An electric strike is an access control device used for door frames. It replaces the fixed strike faceplate often used with a latch (also known as a keeper). Like a fixed strike plate, it normally presents a ramped or beveled surface to the locking latch allowing the door to close and latch just like a ...
In 1895, he was entitled manager of the art-hardware and building material department. By 1908, Prinzer, working in conjunction with his Indianapolis neighbor, architect Harry H Dupont, would develop and receive US patent protection for what would later come to be known in the industry as panic bar door hardware.
A door closer is a mechanical device that regulates the speed and action of a door’s swing. [1] Manual closers store the force used to open the door in some type of spring and reuse it to close the door. Automatic types use electricity to regulate door swing behavior. Door closers can be linked to a building's fire and security alarm systems. [2]
Night latch. A night latch (or night-latch or nightlatch) is a lock that is fitted on the surface of a door; it is operated from the exterior side of the door by a key and from the interior (i.e. "secure") side of the door by a knob. [1][2][3]
Locking device on doors used for delaying opening for short period (10–15 seconds) after release is pressed. Permitted as panic hardware in limited circumstances. May also refer to a security system that releases electronic door locks when a fire alarm is activated, such as in stairwells of a high-rise building. Spray nozzle See fog nozzle.
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