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Tubular locks are commonly seen on bicycle locks (such as the Kryptonite lock), Kensington computer locks, elevators, and a variety of coin-operated devices such as vending machines, and coin-operated washing machines. Tubular pin tumbler locks are often considered to be safer and more resistant to picking than standard locks. This is primarily ...
For example, a standard 6 pin cylinder, which was designed to be operated by only one key, can be operated by up to 2 6 = 64 keys if there are two shear points in each chamber. Larger organizations, with more complex systems, may have several levels of master keys, where the top level key works in all of the locks in the system.
The first known example of a tumbler lock was found in the ruins of the Palace of Khorsabad built by king Sargon II (721–705 BC.) in Iraq. [1] Basic principles of the pin tumbler lock may date as far back as 2000 BC in Egypt; the lock consisted of a wooden post affixed to the door and a horizontal bolt that slid into the post.
The underside of a disc tumbler lock A key for a disc tumbler lock. A disc tumbler or disc detainer lock is a lock composed of slotted rotating detainer discs. The lock was invented by Finnish founder of Abloy, Emil Henriksson (1886–1959) in 1907 and first manufactured under the Abloy brand in 1918.
The plug is the part of a cylinder lock which is designed to turn when a key is inserted. Plug follower A plug follower is a device used in the assembly and disassembly of locks; it is a solid cylinder that is used to push the plug out of the lock, while preventing the springs and driver pins from moving. [8] Relocking device in a safe ...
A wafer tumbler lock is a type of lock that uses a set of flat wafers to prevent the lock from opening unless the correct key is inserted. This type of lock is similar to the pin tumbler lock and works on a similar principle. However, unlike the pin tumbler lock, where each pin consists of two or more pieces, each wafer in the lock is a single ...
Mul-T-Lock is an Israeli company that develops and sells padlocks, combination locks, and related security products. It was founded in 1973 by Moshe Dolev and Avraham Bahry [1] and is a subsidiary of Assa Abloy. Four years later, in 1977, Mul-T-Lock introduced the telescopic pin technology and entered the cylinders market.
A type of lock pick used to pick lever tumbler locks. Lever tumbler locks can be picked with a tool called a curtain pick which is inserted into the keyway of the lock, and a force is applied to the locking bolt. The pick is then used to lift each lever inside the lock to the correct height so that the locking bolt can pass.
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