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A deadbolt or deadlock is a type of lock morticed into a wooden door where a bolt is thrown into the door frame, using a key from either side, to secure the door. [ 1 ] It is distinct from a spring bolt lock because a deadbolt can only be opened by a key or handle.
Historically, such locks were intended for use at night-time, hence the name. [5] The keyless egress that they offer is a valuable fire safety measure, but may be a security risk if breaking a glass panel (usually in the door) or a nearby small window allows an intruder to reach the knob inside and open the door from the outside.
This is an accepted version of this page This is the latest accepted revision, reviewed on 21 January 2025. Device to open or close door Various examples of door handles throughout history A door handle or doorknob is a handle used to open or close a door. Door handles can be found on all types of doors including: exterior doors of residential and commercial buildings, internal doors, cupboard ...
Metal fire-resistance rated door with a lockset consisting of a locking latch bolt operated by lever handle with an escutcheon that encompasses the locking mechanism.. A lockset (alternatively lock set) is the hardware and components that make up the locking or latching mechanism that can usually be found on a door or other hinged object but can also include sliding doors and dividers. [1]
They were common from the 17th century to around 1825, and their lack of a back plate made them different from the later, and neighbouring Norfolk latch (introduced 1800–1820). Both the Suffolk latch and Norfolk latch are thought to have been named by architectural draughtsman William Twopenny (1797–1873). [ 5 ]
Mortise locks have been used as part of door hardware systems in the US since the second quarter of the eighteenth century. In these early forms, the mortise lock mechanism was combined with a pull to open the unlocked door.
a deadbolt lock; a door chain; a locking door handle; an electromagnetic lock, which holds a door shut when electricity is supplied to it; a keycard lock, commonly used on hotel doors; a mortise lock, a lock installed in a hollowed-out pocket within a door; a rim lock, a lock fixed to the exterior of the door
The Connect and Sense deadbolts require a hub to connect to Wi-Fi. [22] [23] It introduced the Encode deadbolt in 2019, its first lock with built-in Wi-Fi. [24] A door handle variant called the Encode Lever was released in 2023. [25] In 2022, it launched the Encode Plus deadbolt, which was the first smart lock to support Apple's NFC home key ...
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