Ads
related to: push bar emergency exit doors equipped quizlet
Search results
Results From The WOW.Com Content Network
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.
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.
This delay reserves time for security personnel to get to the door before the door opens. The lock will also release if there is a fire alarm or power failure, but otherwise these locks hold the exit doors shut. Exit control systems can include a "request to exit detector" such as a pushbutton that opens the exit, if exit requests are enabled.
A bullbar on a Land Rover Discovery fitted with spotlights and a sand flag. Push bar of a police car in Abu Dhabi, used to move stranded vehicles out of the way. A bullbar or push bumper (also kangaroo bar, roo bar, winch bar or nudge bar in Australia, livestock stop [NB 1] or kangaroo device in Russia, and push bar, ram bar, brush guard, grille guard, cactus pusher, rammer, PIT bar, PIT ...
Electric strikes for rim panic exit devices are sometimes, though not always, 'no cut' electric strikes - no cutting, in reference to a rim panic strike, means the strike is bolted to the surface of jamb without cutting into the frame or modifying it in any way (except for the drilling and tapping of mounting screw and/or anchoring pins).
Another type of lock also called a police lock and also formerly made by the Fox Police Lock Company is the crossbar police lock. It features two steel bars across the width of the door and beyond, held by two brackets set in the doorframe. [1] [3] When the door is unlocked, the bars are moved inwards to the point of being withdrawn from the ...
Pushbars, also known as bullbars, rambars, or nudge bars, are fitted to the chassis of a police car to augment the front bumper. They allow the car to push disabled vehicles out of a roadway, breach small and light objects, and conduct PIT maneuvers with less damage to the front of the vehicle. Pushbar designs vary; some are small and only ...