Lock-picking tool and method of use thereof

Details Lock-picking tool and method of use thereof Lock-picking tool and method of use thereof

1982-07-29

1986-10-21

Smith, Gary L.

Locks

Operating mechanism

Key

70398, 70406, 70409, E05B 1920

Patent

active

046178139

ABSTRACT:
A picking tool adapted to open a cylinder lock of the axial pin tumbler type having its tumblers arranged in a coplanar configuration, includes a planar torquing core insertable into the lock keyway in a longitudinal direction, a plurality of longitudinal guideway channels formed on opposing faces of the core, and respective tumbler probes longitudinally reciprocable in the channels. A holder, which acts as a handle for manipulating the picking tool, also serves as a housing surrounding the core and the probes. The holder is formed with a pair of radial openings in opposite sides thereof which receive respective brake segments for exerting a frictional drag on the probes. An adjustable hoop clamp surrounds the brake segments for manually adjusting the frictional drag, so that the proper tumbler displacement action can be achieved. Setscrews are threaded into the body of the holder for clamping the probes in their final tumbler-displacing positions. At the rear of the holder, the tail ends of the probes fan out circularly so that they can be more easily manipulated individually. The probes have indicia from which the lock code can be read out after the probes reach their final positions.

REFERENCES:
patent: 103837 (1870-06-01), Brady
patent: 234057 (1880-11-01), Parker
patent: 1899739 (1933-02-01), Von Mehren
patent: 2059376 (1936-11-01), Lombardo
patent: 2070342 (1937-02-01), Tarrie
patent: 2087423 (1937-07-01), Abrams
patent: 2423734 (1947-07-01), Sterner
patent: 3149487 (1964-09-01), Martin
patent: 3251206 (1966-05-01), Gruber
patent: 3270538 (1966-09-01), Kerr
patent: 3330141 (1967-07-01), Greenwald
patent: 3572070 (1971-03-01), Brand
patent: 3868838 (1975-03-01), Zimmerman et al.
patent: 4094176 (1978-06-01), Hughes
Hughes, "Pickmasters", Custom Security Products Mfg., Inc., Second edition, copyright 1978, p. 2.

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