A latch mechanism includes a hook-handle assembly coupled to a first panel and a clevis coupled to a second panel. The hook-handle assembly engages the clevis to secure the first panel relative to the second panel.

A smart window/door opening-closing device that can easily be installed for use with an existing door or window or can be built-in by the door or window manufacturer, can be programmed to activate the opening or closing of the door or window either (a) remotely, (b) automatically by a pet, (c) automatically by a voice command and/or (d) automatic in response to external sensors, is easily disengaged when use is not desired, provides safety and security to prevent unwanted opening or closing of the door or window, and is integrated with a wireless communication network to enable smart and remote control of the window/door actuator.

A lock for installation in a door leaf defining a first plane, the lock comprising: a housing; and a bolt moveable relative to the housing between a retracted position, and an extended position in which a distal portion of the bolt protrudes from an opening in the shoulder sloped in a plane parallel to the first plane, such that the bolt housing; wherein the distal portion of the bolt comprises at least one is moveable into the retracted position in response to a force applied to the shoulder.

A latch mechanism includes a hook-handle assembly coupled to a first panel and a clevis coupled to a second panel. The hook-handle assembly engages the clevis to secure the first panel relative to the second panel.

Fenestration systems and associated methods include use of a lock assembly having a housing, a cam gear, a reversal gear, and one or more catches. Various aspects relate to enhanced locking/security, including repeatability and overall efficacy.

A sliding latch replaces a prior art door strike plate. The sliding latch has two components, a strike plate and a sliding latch cover reciprocal within the strike plate. A handle protrudes from the sliding latch cover sufficiently to extend beyond a closed door and door frame, to permit the handle to be manually grasped and lifted in a crisis. When the sliding latch cover is thus elevated, it no longer blocks the door bolt, allowing the bolt to extend farther and engage with the strike plate and extend into the door jamb, locking the door. One of the strike plate mounting screw holes is preferably drawn slightly out of the primary plane of the strike plate toward the jamb, and a pair of elevated distally located edges run longitudinally along the strike plate. The drawn screw hole and raised edges guide and limit motion of the sliding latch cover.

An interlock for an enclosure can include a primary door activator with an activator arm, a secondary door activator, and a rotatable arrangement that links the primary and secondary door activators. The activator arm can block a primary door of the enclosure from being closed when the activator arm is in an open configuration. The activator arm can be configured to rotate with the rotatable arrangement in a first direction towards the open configuration as the primary door is opened, and in a second direction away from the open configuration as the primary door is closed. The secondary door activator can be configured to engage the rotatable arrangement to prevent rotation of the rotatable arrangement when the secondary door is open, and to permit rotation of the rotatable arrangement when the secondary door is closed.

A center slide assembly for a multi-point exit device. Upper and lower spool assemblies may be displaced from first positions to second positions along an inner region of a center slide. The displacement of the spool assemblies may displace upper and lower pull cables so as to retract latch mechanisms from extended positions to retracted positions. A first latching pin may be displaced, along with the displacement of the upper spool assembly, along an abutment surface of a tilting link so as to pivotally displace the tilting link from an unlocked position to a locked position. Displacement of the lower spool assembly may displace a second latching pin to a position wherein the second latching pin may be received and retained within a jog of the tilting link when the tilting link is in the locked position, which may thereby retain the associated latch mechanism in the retracted position.

A Disposable Emergency Duty Latch Disabling Strip having length and elasticity enough to fit around almost any door jamb security mechanism is made of a thin, tough elastomer. A first handle-adaptive hole fits around a door knob, handle or lever on one side of the door. A latch-enveloping middle portion of the Strip has width and puncture strength enough to cover a door's latch-bolt and strike plate or other latching portion and restrain any spring-bolts or latches from engaging. The remaining handle-adaptive end portion of the Strip wraps around to the far side of the door and is attached to the far side door mechanisms using the remaining handle-adaptive hole. Depending on door tolerances, the door will either wedge open or the lock will be prevented from engaging. The Strip resists heat, cold, shearing, abrasion and can be folded to deploy from a dispenser, belt or pocket.

A door knob device for use upon existing door knobs located on a door member, comprising: two ring members; and a belt member. The two ring members are each adapted to slip over respective opposite door knobs of the door member. The belt member is connected between the two ring members and is adapted to extend around an edge of said door member and cover and prevent a door latch bolt of said door member from extending outwardly therefrom and connecting with a strike plate of a door frame, thereby preventing the door member from closing in a latched position. A combination of a door knob assembly and a door knob device for use upon the door knob assembly when located on a door member is also disclosed, the combination comprising a door knob assembly and a door knob device.