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ELECTROMECHANICAL NON-NUMERIC CONTROL FOR LOCKS

[Category : - Security and alarms]
[Viewed 2091 times]

An electro-mechanical control for a lock, comprising:

a plurality of mostly tubular shafts journaled concentrically about a common axis, each inner shaft extending from its outer in both axial directions, the shafts having proximal and distal ends;
a plurality of wheels matched to the mostly tubular shafts, each fixed to the distal end of a corresponding shaft, each having an aperture at a common radial distance from the common axis;

a plurality of dials matched to the mostly tubular shafts, each fixed to the proximal end of a corresponding shaft and thereby forming a unitary rotational assembly with wheel and shaft, each dial having a preferred orientation corresponding to an alignment of the apertures;

a means for indicating the preferred orientation for each dial;
a light source at one end of the plurality of wheels positioned at the common radial distance, the light source connected to a source of power through a means for connecting;

a photo sensor positioned on the other end of the plurality of wheels for detecting a beam of light from the light source passed through the aligned apertures;

a means for determining whether each wheel rotation was clockwise or counterclockwise, said means for determining including an electro-magnetic sensor utilizing Weigand technology; and

a means for controlling the opening of the lock when the dials have been turned in a preferred direction to the preferred orientation.

Objectives and advantages:

- provide an optical means for controlling a lock.

- define the optical means in terms of a light fence represented by concentrically-journaled rotating wheels.

- render each wheel individually settable and thereby eliminate any drift in position caused by coaction.

- provide a means for positively locating each such wheel.

- provide a visual recognition means for identifying the combination representing the orientation of each wheel in alignment.

- improve battery life by shortening the use period to a brief pulse.

- extend the possible combination permutations by including rotation direction as an argument.

- provide a logic process for validating an unlock command.

- provide a means for customizing the combination

Patent publications:

US 8359890

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mbkitchen (United States)

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