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Modern manual door closer Eclipse door spring and separate checking mechanism. 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.
It employs more than 15,000 people in over 50 countries. It formed as the result of a merger between former Kaba and former Dorma in September 2015 and is publicly traded on the SIX Swiss Exchange. [5] dormakaba generated a turnover of CHF 2.85 billion in financial year 2022/23, a growth of 3.3 % compared to the previous year. [6]
Dorma was founded by Wilhelm Dörken and Rudolf Mankel as Dörken & Mankel KG in Ennepetal, Germany, in 1908. [2] The family business was managed by owner Karl-Rudolf Mankel in third generation. As part of succession planning , previous sole Dorma proprietor Karl-Rudolf Mankel transferred the majority of his shareholding to his daughters ...
They were seen going through the door, before exiting as the victim shouted, "Help! Help!" Police posted the clip on Tuesday, Jan. 14, asking the public for assistance in "solving a home invasion ...
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.
A doorstop (also door stopper, door stop or door wedge) is an object or device used to hold a door open or closed, or to prevent a door from opening too widely. The same word is used to refer to a thin slat built inside a door frame to prevent a door from swinging through when closed.
A simple electromagnetic door holder consists of a strong electromagnet, usually attached to a wall or mounted in a floor pedestal enclosure, next to the door it controls. The mechanism may be mounted near the floor, at the upper corner of the open door, or at any convenient height along the latch edge (away from the hinged edge).
A lock is a mechanism that secures buildings, rooms, cabinets, objects, or other storage facilities. A "smith" is a metalworker who shapes metal pieces, often using a forge or mould, into useful objects or to be part of a more complex structure.