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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.
If the transmitter falls out (as shown here) an alarm sounds. The exits remain locked while the alarm is sounding. The exits unlock only when the alarm is re-set. An exit control lock, also known as an exit control device, exit lock, or simply an exit control, prevents or deters unauthorized exit. [1] [full citation needed]
HARTFORD, Conn. (AP) Entering an empty, unfamiliar house with a stranger is all in a day's work for real estate agents, most of them women. "You're on your own," said Nicholle D. Dagata, a real ...
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]
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Aaron Rodgers and the New York Jets are officially out of the playoff hunt. The Jets were eliminated from postseason contention on Sunday afternoon after their 32-26 overtime loss to the Miami ...
Modern manual door closer Eclipse door spring and separate checking mechanism. 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.