Importance

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Abstract

A door locking assembly in which the latching mechanism of the assembly comprises a latch bolt operated by rotary means, which can be the door knob or a key operated tumbler, for normally operating the latch bolt, dead lock means for blocking the retraction of the latch bolt, auxiliary latch means having link means normally urging it into a position for moving the dead lock means out of latch bolt blocking position, electrically operable means cooperating with the latching mechanism for controlling the auxiliary latch means, lock bar means operative to prevent turning of the rotary means, and an operating element connected between the lock bar and the link means for the auxiliary latch means for determining the operative position of the lock bar means in relation to the position of the dead lock means relative to the latch bolt.

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First Claim