Cylinder lock

Details Cylinder lock Cylinder lock

1977-03-07

1978-07-04

Wolfe, Robert L.

Locks

Operating mechanism

Key

70 37B, 70419, 70373, 70375, E05B 2704

Patent

active

040981037

ABSTRACT:
A cylinder lock having a barrel with annular grooves, drivers aligned with the barrel grooves, key pins having slotted upper ends, at least some key pins having diametrically disposed chisel edges to cooperate with bitting cuts in the key for rotation of the key pins, and the drivers and key pins including provision for a magnetic interlock to prevent the drivers from hanging up on the shear line and the key pins from dropping away from the drivers, as in attempts at picking the cylinder. Projections adapted to enter into the pin slots and prevent rotation of the barrel except when the key pins are lifted to the shear line and rotationally oriented as needed are formed either on a gate or on the drivers.

REFERENCES:
patent: 2370800 (1945-03-01), Kind
"Emhart High Security Locking System", Sept. 15, 1975.

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