Cylinder lock and key

Details Cylinder lock and key Cylinder lock and key

1990-08-31

1992-12-15

Smith, Gary L.

Locks

Operating mechanism

Key

70395, 70399, E05B 2700, E05B 1908

Patent

active

051706512

ABSTRACT:
The cylinder lock and key comprises at least two auxiliary pins which are arranged on opposite sides with respect to the key slot and have an end which protrudes into the slot. The opposite ends of the two auxiliary pins cooperate with respective auxiliary tumbler pins which are actuated by springs and are suitable for being actuated in the position for rotation of the plug by a lever articulated in an opening of the shank of the key when the key is fully inserted in the lock.

REFERENCES:
patent: 1567979 (1925-12-01), Northrop
patent: 1735868 (1929-11-01), Klingel
patent: 3412588 (1968-11-01), Schwegler
patent: 3486355 (1969-12-01), Halfyard
patent: 3877267 (1975-04-01), Harris
patent: 3986376 (1976-10-01), Lack
patent: 4120184 (1978-10-01), Gerlach
patent: 4325242 (1982-04-01), Tietz
patent: 4343166 (1982-08-01), Hofmann
patent: 4377082 (1983-03-01), Wolter
patent: 4612787 (1986-09-01), Prunbauer et al.
patent: 4838058 (1989-06-01), Matsumoto

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