Search results
Results from the WOW.Com Content Network
Door chain - A device to secure door opening; Door closer – Mechanical or electromagnetic device to close an open door (in the event of a fire) [3] Door opener - Automatic door opening device activated by motion sensors or pressure pads; Door damper – A hydraulic device employed to slow the door's closure; Door knocker
A wide range of methods are available depending on the door's opening direction (inward or outward), construction materials, etc., and one or more of these methods may be used in any given situation. [1] [2] In the United States, residential doors typically open inward while commercial building doors usually open outward. [3]
Panels are made slightly smaller than the available space within the frame to provide room for movement. Wood will expand and contract across the grain, and a wide panel made of solid wood could change width by a half of an inch, warping the door frame. By allowing the wood panel to float, it can expand and contract without damaging the door.
The space enclosed in a church between the outer gate or railing of the rood screen and the door of the screen. Apron 1. A raised panel below a window or wall monument or tablet. 2. An open portion of a marine terminal immediately adjacent to a vessel berth, used in the direct transfer of cargo between the vessel and the terminal. 3.
A disadvantage to door bar installation is that the door must be level with the wall, so the lock cannot be used if the home has trim that projects from the wall. Intercoms, peep holes, and mail slots can all serve purposes similar to the door chain when dealing with strangers, and function without opening the door. Of course, these devices do ...
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 ...
Safe-crackers can use what are known as jam shots to blow off the safe's doors. Most modern safes are fitted with 'relockers' (like the one described above) which are triggered by excessive force and will then lock the safe semi-permanently (a safe whose relocker has tripped must then be forced, as the combination or key alone will no longer ...
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.