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Marks USA was established in 1977 by its founder and president, George Marks. Known for quality and dependability, Marks locks carry a lifetime warranty. Marks USA is recognized as a leader in introducing new products such as their 195 series Grade 1 lever lock.
It is a short step from offering quality locksets with traditional cylinders to upgrading Marks locks with the availability of a more secure lock cylinder system. Marks USA Hi-Security cylinders provide key control by deterring unauthorized key duplication (photo 1). The Hi-Security cylinders also provide protection against key bumping, drilling and picking attacks. The public is now being made more aware of possible weaknesses in traditional cylinders. Marks USA has the perfect answer at just the right time.
Marks USA hi-security has been assigned multiple international and U.S. patents which will provide key control protection for years to come.
HOW IT WORKS
Marks USA HI-Security cylinders have a dual locking system. First, most cylinders have the traditional six-pin locking system. Depths and spaces are identical to those used for SC1 Schlage keyways, so key origination can be done by using Schlage dimensions. Master keying jobs can be accomplished by using the same two-step rules as for Schlage. Key duplication or keys cut by depth and spaces can be done using standard key cutting equipment.
A second locking system is operated by a wave pattern milled into the side of the blank (photo 2). The wave pattern is referred to by Marks USA as a ‘security code’. Security pins interact with the wave pattern as the key is inserted into the lock. Security pins have four different depths. With four depths and five security pins in most locks, there is a possible 1024 individual wave patterns or security codes, although only approximately 900 are planned for use. Marks USA also has several different key grooves, so the amount of possible individual ‘keyways’ is quite large.
