Locks – Operating mechanism – Key
Patent
1998-06-30
2000-08-22
Barrett, Suzanne Dino
Locks
Operating mechanism
Key
70358, 70493, 70406, 70409, E05B 2700
Patent
active
061054046
ABSTRACT:
Improved squiggle keys and cylinder locks include a squiggle key groove formed along a first broad surface of the squiggle key and a plurality of bittings formed along a second opposite broad surface of the squiggle key. The cylinder lock includes a plurality of rotatable discs that have groove-following elements that are rotated via the groove on the key. The rotatable discs operate to prevent a plug of the cylinder lock from rotating unless a correct squiggle key is inserted into a keyway in the plug. The bittings formed along the second opposite broad surface of the squiggle key are generally circular and have inner regions with a different depth than outer regions of the bittings. As a result, tumbler pins can be located along the inner and/or outer regions of the bittings which enables increased keying capabilities and variations and which enables a common lock to be operated by keys for different cylinder locks.
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International Search Report.
Field Peter W.
Perkins Andrew E.
Barrett Suzanne Dino
Medeco Security Locks Inc.
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