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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.
Carl Jacob Prinzler (June 6, 1870 – May 30, 1949) was an American engineer who invented the "panic bar" device for doors that allowed them to be opened from the inside despite being locked on the outside.
In 1910, Vonnegut Hardware Company began to sell the Von Duprin Safe Exit Device; not long after many public buildings in Indianapolis implemented the panic bar, setting standards that the rest of the nation too would soon follow. [5] Dupont announced his move to Florida in 1915, with an office in St. Petersburg's Central National Bank Building ...
In the US, UL rated doors must retain their rating: in new construction doors are cored and then rated. but in retrofits, the doors must be re-rated. Electrified exit hardware, sometimes called "panic hardware" or "crash bars", are used in fire exit applications. A person wishing to exit pushes against the bar to open the door, making it the ...
Emergency exit in Universitetet metro station in Stockholm. An emergency exit in a building or other structure is a special exit used during emergencies such as fires.The combined use of regular and emergency exits allows for faster evacuation, and emergency exits provide alternative means of evacuation if regular exits are inaccessible.
Arch/Vistawall Style 3/4 in. Duronodic Right Hand Offset Door Pivot Hinge Set For Adams Rite Type Storefront Door. $18.50. Home Depot. 7. Free shipping.