Locking/release mechanism for a pivot bolt of a...

Details Locking/release mechanism for a pivot bolt of a... Locking/release mechanism for a pivot bolt of a...

E - Fixed Constructions

05

B

E05B 47/06 (2006.01)

Patent

CA 2105322

A locking/release mechanism for a pivot bolt of a closed-circuit door opener with a safety catch for the pivot bolt is controlled by an electromagnet. In order to reliably ensure a release of the pivot bolt, even if strong pressure has been exerted thereon prior to the cessation or interruption of the magnet current, a locking lever is positioned between the electromagnet and the safety catch. The locking lever has a two-armed construction, one arm being provided with a stop member for engagement with the safety catch and the other arm being in the form of the electromagnet armature. The effective contact surface between the safety catch and the stop member is constructed in such a way that the safety catch applies a cam-like displacement action on the stop member.

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