US 6,874,830 B2 · Electric strike assembly

Abstract

An electric strike includes a housing, a keeper pivotally arranged in the housing, and a holder slidably arranged in the housing. The electric strike also includes a blocking element slidably arranged in the holder, and the blocking element is configured to selectively prevent a rotation of the keeper and allow the rotation of the keeper. Moreover, the electric strike includes a two-position mode selector operable from outside the housing, and the selector is configured to selectively move the holder from a first position to a second position and vice versa. The electric strike also includes an actuator configured to selectively move the blocking element. Specifically, when the holder is in the first position, the blocking member allows the rotation of the keeper when the actuator is energized and prevents the rotation of the keeper when the actuator is not energized, and when the holder is in the second position, the blocking member prevents the rotation of the keeper when the actuator is energized and allows the rotation of the keeper when the actuator is not energized.

Claims12

Dependent claims

An electric strike for a door, comprising:

a housing;
a keeper pivotally arranged in said housing, positioned to prevent withdrawal of a door latch bolt when prevented from pivoting, and to allow withdrawal of said door latch bolt when allowed to pivot;
a holder slidably arranged in said housing;
a blocking element slidably arranged in said holder having blocking surfaces opposing abutments of said keeper for selectively preventing rotation of said keeper, movable between a blocking position wherein rotation of said keeper is prevented and a non-blocking position wherein rotation of said keeper is allowed, biased towards one of said positions;
a two-position mode selector operable from outside said housing for slidably moving said holder between a fail-secure and a fail-safe position, said blocking surfaces blocking rotation of said keeper when in said biased position when said holder is in said fail-secure position, and allowing rotation of said keeper when in said biased position when said holder is in said fail-safe position;
and
actuation means mounted in said holder for moving said blocking element away from said biased position, to block or unblock said keeper.

4 more elements

Dependencies are inferred from the claim text.

Electric strike assembly

Life of this patent

Electric strike assembly

Life of this patent

Abstract

Claims12