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2. Door closer - Wikipedia

   en.wikipedia.org/wiki/Door_closer

   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. Door closers can be linked to a building's fire and security alarm systems. [2]

3. Swing-door operator - Wikipedia

   en.wikipedia.org/wiki/Swing-door_operator

   Some are built on top of a standard door closer. To open the door, the operator forces the closer in the opening direction. Then, the closer closes the door. The user may open the door manually, using just the door closer. In case of power failure while the door is open, the closer itself closes the door. Some are built without a door closer.

4. Locksmithing - Wikipedia

   en.wikipedia.org/wiki/Locksmithing

   Although fitting of keys to replace lost keys to automobiles and homes, and the changing of keys for homes and businesses to maintain security is still an important part of locksmithing, according to a 1976 US Government publication, locksmiths today are primarily involved in the installation of higher quality lock-sets and the design ...

5. Door - Wikipedia

   en.wikipedia.org/wiki/Door

   Sometimes, door closer mechanisms ensure fire doors remain closed. An additional fire risk is that doors may prevent access to emergency services personnel coming to fight the fire and rescue occupants, etc. Fire fighters must use door breaching techniques in these situations to gain access.

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   Discover the latest breaking news in the U.S. and around the world — politics, weather, entertainment, lifestyle, finance, sports and much more.

7. US congressional negotiators aim to fund government through ...

   www.aol.com/news/us-congressional-negotiators...

   Republican and Democratic negotiators in the U.S. Congress are closing in on a deal for a stopgap bill to fund the government through March 14, averting a partial shutdown that would otherwise ...