Lock cylinder with rotatable magnetic tumblers

Details Lock cylinder with rotatable magnetic tumblers Lock cylinder with rotatable magnetic tumblers

1985-11-25

1987-05-19

Wolfe, Robert L.

Locks

Operating mechanism

Using a powered device

70365, 70422, E05B 4700

Patent

active

046657266

ABSTRACT:
The lock cylinder comprises a cylinder housing and a cylinder core having at least one rotatable magnetic tumbler supported therein, wherein in the cylinder core at least one axially slidable bolt member is provided, whose slidability is controlled by the rotatable magnetic tumblers. The bolt member has two control tips positioned at opposite ends thereof, which are guided with two control surfaces mounted, so as to be nonrotatable with respect to the cylinder housing and positioned opposing each other. Thus a positively actuated control of the bolt member is provided, which is independent of the sliding force, which would be provided by a spring. One of the control tips is slidable against an elastic restoring force, whereby, after a certain limiting force has been exceeded, a relative displacement between the control surfaces of the bolt member occurs so that a subsequent rotation of the cylinder core without collateral axial displacement of the bolt member is made possible.

REFERENCES:
patent: 4220021 (1980-09-01), Burger

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