Locks – Operating mechanism – Key
Patent
1977-01-03
1978-02-14
Wolfe, Robert L.
Locks
Operating mechanism
Key
70411, 70413, E05B 1920
Patent
active
040731669
ABSTRACT:
A device for opening locks with magnetically actuated tumblers or pins is provided with a housing of non-magnetizable composition and a plurality of interlocking gear wheels, pivotably retained in the housing, and also constructed from materials not susceptible to permanent magnetization. The gear wheels are pierced by a plurality of orifices across their thickness and cylindrical permanent magnets are inset into each orifice with a substantially random distribution of their North and South poles with respect to the faces of the wheels. Means are provided to rotate the wheels simultaneously around their pivot axes, thereby generating a changing, random distribution of magnetic fields arising from the interaction of the inset permanent magnets. By holding the housing of the magnetic pick proximate to the usual placement of the coded magnet key of the lock, the magnetic pins, or tumblers, therein are exposed to a large combination of structured magnetic fields, one of which is likely to correspond to the key code.
REFERENCES:
patent: 3873892 (1975-03-01), Dettling
patent: 3955388 (1976-05-01), Stackhouse
Brown Boniard I.
Wolfe Robert L.
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