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  2. Door furniture - Wikipedia

    en.wikipedia.org/wiki/Door_furniture

    Door damper – A hydraulic device employed to slow the door's closure; Door knocker; Door stop – used to prevent the door from opening too far or striking another object [3] Espagnolette (for a window) Fingerplate; Letter box or mail slot; Peephole; Kickplate [5] A number of items normally accompany doors but are not necessarily mounted on ...

  3. 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]

  4. Automotive hemming - Wikipedia

    en.wikipedia.org/wiki/Automotive_Hemming

    Hemming presses are widely used in automotive manufacturing for the hemming of sheet-metal body components. The process uses traditional hydraulically operated ‘stamping presses’ to hem closure parts, and, being the last forming process in stamping, it largely determines the external quality of such automotive parts as doors, hoods, and trunk lids.

  5. Crash bar - Wikipedia

    en.wikipedia.org/wiki/Crash_bar

    Crash bar doors in a school, with upper vertical rod latches. 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.

  6. Pigging - Wikipedia

    en.wikipedia.org/wiki/Pigging

    See diagram on the right representing a pig launcher. In normal operation valves V2 and V4 will be open, all other valves and the door are closed and locked. [13] To launch a pig Ensure pig launcher is drained and vented. Unlock and open, then close and relock the vent and drain valves. Unlock and open door, load pig into launcher, close and ...

  7. Door breaching - Wikipedia

    en.wikipedia.org/wiki/Door_breaching

    Utilizing a breaching tool is unnecessary if the door is unlocked and easy to open. [5] [3] [6] [1] If the door is locked, breachers can attempt to force inward-opening doors with a strong kick. The breacher will aim to hit the door near the locking mechanism, but not kick the doorknob itself as one can easily twist an ankle doing so. [7]

  8. Electromagnetic lock - Wikipedia

    en.wikipedia.org/wiki/Electromagnetic_lock

    These door holders were traditionally used to hold doors open, but in this application Saphirstein believed that they could be packaged and adapted to work as a fail-safe lock. After a successful prototype and installation at the Forum, Saphirstein continued evolving and improving the design and established the Locknetics company to develop ...

  9. Hook-and-loop fastener - Wikipedia

    en.wikipedia.org/wiki/Hook-and-loop_fastener

    Closures on backpacks, briefcases and notebooks often make use of hook-and-loop fasteners. Cloth diapers often make use of hook-and-loop fasteners. It is an integral part of games such as tag rugby and flag football, and is used in surfboard leashes and orthopaedic braces. NASA makes significant use of hook-and-loop fasteners.