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  2. Lockset - Wikipedia

    en.wikipedia.org/wiki/Lockset

    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]

  3. Bored cylindrical lock - Wikipedia

    en.wikipedia.org/wiki/Bored_cylindrical_lock

    Some commercially-sold doors may come prepared to receive one or more bored cylindrical locks, such as entry doors, which typically require both a door knob and dead bolt. [ 2 ] In the United States, typically, the face bore is sized from 1.5 to 2.125 inches (3.81 to 5.40 cm) in diameter and is centered at 2.375 or 2.75 inches (6.03 or 6.99 cm ...

  4. Mortise lock - Wikipedia

    en.wikipedia.org/wiki/Mortise_lock

    Rim locks have been used in the United States since the early eighteenth century. [1] An early example of the use of mortise locks in conjunction with rim locks within one house exists at Thomas Jefferson's Monticello. In 1805, Jefferson wrote to his joiner listing the locks he required for his home. While closets received rim locks, Jefferson ...

  5. Kwikset - Wikipedia

    en.wikipedia.org/wiki/Kwikset

    Kwikset evolved to include many Weiser features, and Weiser locks now use Kwikset's "SmartKey" self-rekeyable lock technology and Kwikset keyways. On October 9, 2012, the Wall Street Journal reported that Spectrum Brands Holdings, Inc. had agreed to acquire the HHI division from Stanley Black & Decker's, including Kwikset, and that the ...

  6. Schlage - Wikipedia

    en.wikipedia.org/wiki/Schlage

    Primus keys will operate non-Primus locks within the same system. Primus blanks and keyways are slightly thinner to prevent the entry of non-Primus keys; however, even if a standard key is altered to allow entry, it will not operate Primus locks. This design was protected until 2007 under U.S. patent 4,756,177.

  7. Master keying - Wikipedia

    en.wikipedia.org/wiki/Master_keying

    These master-keyed locks are configured to operate with two, or more, different keys: one specific to each lock (the change key), which cannot operate any of the others in the set, and the master key, which operates all the locks in the set. [1] Locks that have master keys have a second set of the mechanism used to operate them that is ...

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