Method and apparatus for decoding a pin tumbler lock

Details Method and apparatus for decoding a pin tumbler lock Method and apparatus for decoding a pin tumbler lock

1993-03-01

1994-10-18

Gall, Lloyd A.

Locks

Operating mechanism

Key

70352, 70405, 70409, 70413, E05B 1920

Patent

active

053557018

ABSTRACT:
Methods and apparatus for decoding pin tumbler locks, and more specifically, a mechanical key card lock. To determine the length and weight of a given pin tumbler, a probe is inserted within the lock, comprised of one or a matrix of many force sensing resistors. The probe will respond to variations in pressure and tension of each pin tumbler, and will thus provide a range of output resistances, directly related to the pressure exerted upon the sensor by a particular pin tumbler. The outputs of the sensors are then electronically sensed and recorded so that a duplicate key can be produced.

REFERENCES:
patent: 2066645 (1937-01-01), Rial
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patent: 3827151 (1974-08-01), Naill
patent: 3985010 (1976-10-01), Idoni
patent: 3987654 (1976-10-01), Iaccino et al.
patent: 4149394 (1979-04-01), Sornes
patent: 4185482 (1980-01-01), Nail
patent: 4517746 (1985-05-01), Easley
patent: 4535546 (1985-08-01), Smith
patent: 4667494 (1987-05-01), Joosten

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