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  2. Crash bar - Wikipedia

    en.wikipedia.org/wiki/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.

  3. Carl Prinzler - Wikipedia

    en.wikipedia.org/wiki/Carl_Prinzler

    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.

  4. Door furniture - Wikipedia

    en.wikipedia.org/wiki/Door_furniture

    A typical "handle set" is composed of the exterior handle, escutcheon, an independent deadbolt, and the interior package (knob or lever). On some doors the latch is incorporated into a hinged handle that releases when pulled on. See also: Doorknob – A knob or lever on an axle that is rotated to release the bolt; Crash bar or Panic bar; [3]

  5. Electronic lock - Wikipedia

    en.wikipedia.org/wiki/Electronic_lock

    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 ...

  6. Lockset - Wikipedia

    en.wikipedia.org/wiki/Lockset

    Metal fire-resistance rated door with a lockset consisting of a locking latch bolt operated by lever handle with an escutcheon that encompasses the locking mechanism.. A lockset (alternatively lock set) is the hardware and components that make up the locking or latching mechanism that can usually be found on a door or other hinged object but can also include sliding doors and dividers. [1]

  7. Latch - Wikipedia

    en.wikipedia.org/wiki/Latch

    A cabin hook is a hooked bar that engages into a staple. [7] [8] The bar is usually attached permanently to a ring or staple that is fixed with screws or nails to woodwork or a wall at the same level as the eye screw. The eye screw is usually screwed into the adjacent wall or onto the door itself. Used to hold a cupboard, door or gate open or ...

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