A rotary latch closure comprising a housing with an actuating shaft which is mounted so as to be rotatable, but axially fixed therein. The rotary latch closure has, at its free end, a circumferential thread, at least one axially oriented flattened portion, and a rotary latch configured to be fitted to the free end of the shaft so as to be fixed with respect to rotation relative to it in at least one rotational position and which is axially supported on a nut which can be screwed onto the circumferential thread. The nut is enclosed by a cage forming a laterally accessible space that is bounded by two walls, each of the two walls having a prismatic opening, wherein the opening allows the shaft to be slid through in a torsionally rigid manner.

Mechanically or electromechanically positioning a deadbolt used to lock or unlock a door is disclosed. An electromechanical lock can include a deadbolt to be positioned to lock or unlock a door. The deadbolt can be mechanically positioned based on the rotation of a paddle of the electromechanical lock or electromechanically positioned via a motor being turned on to position the deadbolt. A disengagement mechanism can disengage an engagement cog from a worm gear hub of a gear train of the motor upon the mechanical positioning, but remain engaged upon the electromechanical positioning.

Mechanically or electromechanically positioning a deadbolt used to lock or unlock a door is disclosed. An electromechanical lock can include a deadbolt to be positioned to lock or unlock a door. The deadbolt can be mechanically positioned based on the rotation of a paddle of the electromechanical lock or electromechanically positioned via a motor being turned on to position the deadbolt. A disengagement mechanism can disengage an engagement cog from a worm gear hub of a gear train of the motor upon the mechanical positioning, but remain engaged upon the electromechanical positioning.

The security system comprises a plurality of cylindrical locks that includes a motorized lock configured for local actuation by a mechanical key and/or for remote actuation by an electric signal. The cylindrical lock can operate in a variety of lock functions including classroom security and storeroom operations.

A door lock assembly operates a deadbolt between unlocked and locked positions. It includes a key cylinder having a central axis, a torque blade extending from said cylinder upon said center axis, an actuator interlock mechanism operatively connected with the door lock assembly and provided for pivoting upon the torque blade, a ring, pivotally mounted to the door lock assembly, and incorporating a post, the actuator interlock mechanism having a radially extending arm, being bifurcated at its end, for locating upon the ring post, such that upon turning of the ring the actuator interlock mechanism turns the torque blade; a latch bolt assembly, including a deadbolt, the torque blade extending through the latch bolt assembly, and pivoting a latch operator that extends the deadbolt for shifting into a locked or unlocked position, during usage of the door lock assembly.

A door lock assembly operates a deadbolt between unlocked and locked positions. It includes a key cylinder having a central axis, a torque blade extending from said cylinder upon said center axis, an actuator interlock mechanism operatively connected with the door lock assembly and provided for pivoting upon the torque blade, a ring, pivotally mounted to the door lock assembly, and incorporating a post, the actuator interlock mechanism having a radially extending arm, being bifurcated at its end, for locating upon the ring post, such that upon turning of the ring the actuator interlock mechanism turns the torque blade; a latch bolt assembly, including a deadbolt, the torque blade extending through the latch bolt assembly, and pivoting a latch operator that extends the deadbolt for shifting into a locked or unlocked position, during usage of the door lock assembly.

Mechanically or electromechanically positioning a deadbolt used to lock or unlock a door is disclosed. An electromechanical lock can include a deadbolt to be positioned to lock or unlock a door. The deadbolt can be mechanically positioned based on the rotation of a paddle of the electromechanical lock or electromechanically positioned via a motor being turned on to position the deadbolt. A disengagement mechanism can disengage an engagement cog from a worm gear hub of a gear train of the motor upon the mechanical positioning, but remain engaged upon the electromechanical positioning.

Mechanically or electromechanically positioning a deadbolt used to lock or unlock a door is disclosed. An electromechanical lock can include a deadbolt to be positioned to lock or unlock a door. The deadbolt can be mechanically positioned based on the rotation of a paddle of the electromechanical lock or electromechanically positioned via a motor being turned on to position the deadbolt. A disengagement mechanism can disengage an engagement cog from a worm gear hub of a gear train of the motor upon the mechanical positioning, but remain engaged upon the electromechanical positioning.