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Schlage (/ ʃ l eɪ ɡ / SHLAYG) [1] [2] is an American lock manufacturer founded in 1920 by Walter Schlage. Schlage was headquartered in San Francisco from its inception until it relocated to Colorado Springs, Colorado, in 1997. Schlage also produces high-security key and cylinder lines Primus, Everest, and Everest Primus XP.
Walter Reinhold Schlage (1882–1946) was a German-born American engineer and inventor. Known as the Lock Wizard of Thuringia , he is best known for the bored cylindrical lock and the lock company that bears his name, Schlage Lock Co.
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.
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 ...