Safety lock and flat key for such a lock

Details Safety lock and flat key for such a lock Safety lock and flat key for such a lock

1994-05-04

1996-07-09

Meyers, Steven N.

Locks

Operating mechanism

Key

70358, 70395, 70398, 70409, E05B 2700

Patent

active

055333699

ABSTRACT:
A safety lock and key includes a cylindrical stator and rotor having conventional spring-loaded moving rotor pins and moving stator pins. A first rotor pin/stator pin combination is at substantially 45 degrees to a first face of the key while a second rotor pin/stator pin combination is substantially perpendicular to a second face of the key on the opposite side. The centerlines of the rotor pin/stator pin combinations pass through the center of rotation of the rotor. A housing in the key contains a moving element and emerges from the first face of the key inclined at the same angle as the first rotor pin/stator pin combination. The housing also emerges from the second face of the key through a tapered bore that receives the second rotor pin/stator pin combination. A tapered head of the second rotor pin engages a rear portion of the moving element in the housing, thus engaging the moving element with the first rotor pin/stator pin combination. Inserting the key into the rotor thus moves the rotor pin/stator pin combinations from a locked position to an unlocked position.

REFERENCES:
patent: 3412588 (1968-11-01), Schwegler
patent: 3877267 (1975-04-01), Harris, Jr.
patent: 4343166 (1982-08-01), Hofmann
patent: 4377082 (1983-03-01), Wolter
patent: 4612787 (1986-09-01), Prunbauer et al.
patent: 4660396 (1987-04-01), Garro
patent: 4667495 (1987-05-01), Girard et al.
patent: 5131249 (1992-07-01), Baden et al.
patent: 5170651 (1992-12-01), Errani

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