Dual cylinder deadbolt adjunct
OwnerRandall L. Mooreinventor
Life of this patent
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Abstract
A deadbolt manipulation adjunct and method that provides user selection between dual cylinder, single cylinder, and disabled modes, is capable of retrofitting on existing deadbolt structures, which maintains full deadbolt security while providing authorized user deadbolt operation between locked and unlocked positions via a thumb turn actuator to release the deadbolt in the case of an emergency.
Claims6
In combination, a dual cylinder deadbolt with a reciprocating deadbolt latch for mounting through a door having an interior door surface and an exterior door surface, said deadbolt comprising an interior conical outer cylinder cover surrounding a key actuated interior cylinder and a dual cylinder dead bolt adjunct permitting selective keyless operation where said adjunct includes a radially projecting thumb turn and is interposed between the interior door surface and the interior conical outer cylinder cover.
Dependencies are inferred from the claim text.