Lockwood Twin Security Keying System

Patent Protection
Strong international patents protect the design of the mechanism and the key of the Lockwood Twin system.  Patent protection ensures exclusivity by legally barring the sale of unauthorised, manufactured or imported cylinders or key blanks.  Lockwood Twin is fully patent protected until 2013.
The Lockwood Twin patent is based on the side bar mechanism and the interaction of a longitudinal groove (profile) as shown below.
Features
  • Fully patented until 2103
  • Dual pinning mechanism
  • Pick resistant design
  • Drill protection
  • Powerful high security deterrent to unauthorised entry
  • Key control "from the factory floor to your door"
  • Design Registration of all keys is pending. Protection lasts until 2015
  • Master keying for security and convenience
  • Retrofitable to most existing Lockwood locks
  • Twin systems already secure some of the most important and high security installations in the world
  • Support and guidance from the most recognised and respected brand name in security in Australia and New Zealand.
Lockwood Twin Overview
Each Lockwood Twin key has a unique security feature, an extra set of bitting along the side of the blade - the side code - in addition to the usual top bitting (top code). The side code acts on a side bar in the cylinder. Each key (or key set) also has a unique pattern of side grooves on the blade forming the profile.
A key with the wrong profile cannot even be inserted.  A key with the wrong side code cannot release the side bar. For a key to open a lock, it must have the correct profile, side code and top code.

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