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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. Fare evasion - Wikipedia

    en.wikipedia.org/wiki/Fare_evasion

    As of 2006, panic bars on emergency exit doors were approved for installation in all stations of the New York City Subway. [5] Panic bar alarms have been silenced since 2014 due to regularity of non-emergency passenger use.

  5. Electric strike - Wikipedia

    en.wikipedia.org/wiki/Electric_strike

    This is exactly the same principle as a child safety door lock which is installed on car doors. Electric strikes on AC allow someone outside the door to hear when the door is open. The buzzing noise is typically made by applying alternating current (AC) to the strike instead of direct current (DC). When using a DC powered strike, the sound is ...

  6. Door - Wikipedia

    en.wikipedia.org/wiki/Door

    A sliding glass door, sometimes called an Arcadia door or patio door, is a door made of glass that slides open and sometimes has a screen (a removable metal mesh that covers the door). Australian doors are a pair of plywood swinging doors often found in Australian public houses.

  7. It's your last chance to shop the 50 best Advent calendars of ...

    www.aol.com/lifestyle/the-best-advent-calendars...

    These are the best Advent calendars to shop in 2024. Find the best Advent calendars for kids or pets, or treat yourself with chocolates, wine, or self-care goodies.

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