A door latch system comprises an interchangeable latch assembly for securing a door to a door frame. The interchangeable latch assembly comprises a head and a latch mounted to the head. The latch is moveable between latched and unlatched positions. A driven member is operatively connected to the latch, the driven member moveable to latch or unlatch the latch. The door latch system further comprises a universal actuating assembly removably couple-able to the interchangeable latch assembly. The universal actuating assembly comprises a mounting bracket and a driving member releasably coupled to the driven member. Actuation of the universal actuating assembly translates the driving member and the driven member, moving the latch to the unlatched position. A first interchangeable latch assembly may be swapped with a second interchangeable latch assembly without requiring modification of the universal actuating assembly.

A knob-less horizontal-shift fire door lock includes a base including a longitudinal bar, an unlocked-state positioning member arranged in the longitudinal bar and having a positioning section; a latch pivoted to the base and having a free end elastically biased outside the base to engage a keeper on a door jamb; a push board pivoted in the base; and a handle bar slidably mounted on the longitudinal bar. The handle bar is biased by an elastic element to protrude outwards and moving a guide pin to slide in a guide groove of the positioning section. The handle bar is depressible toward the longitudinal bar to move the push board to drive the latch to retract into the base to achieve an unlocked state. The handle bar is further shiftable horizontally to cause the guide pin to slide into a horizontal groove of the positioning section for being secured in position.

Disclosed is a panic bar with a door closer, the panic bar having a locking device installed at a front end of a case and a door closer provided at a rear end of the case. The locking device is released upon pushing of the push bar provided in the case. An air cylinder is installed inside the case. A guide member is installed in one side of the air cylinder and a cylinder sealing cap is installed in the other side of the air cylinder. One side of a piston rod having a piston for compressing and expanding air inside the air cylinder passes through the guide member. A spring disposed between the piston and the guide member is installed on the piston rod.

A rim strike assembly includes a strike body, strike jaw, retaining clutch, locking cam, locking clutch, and a solenoid. The strike jaw, retaining clutch, locking cam, and locking clutch are pivotably coupled to the strike body. The strike body and strike jaw define a latch cavity to receive a latch of a door. The strike jaw includes a jaw follower. The strike jaw is pivotable between a release position and a closed position. The retaining clutch engages the jaw follower and includes a retaining follower. The locking cam includes a retaining notch and a locking notch. The retaining follower engages the retaining notch. The locking clutch includes a locking follower that engages the locking notch of the locking cam. The solenoid includes a plunger coupled to the locking clutch such that movement of the plunger rotates the locking clutch from a locked position to an unlocked position.

A door lock system that adjusts to doors of different thicknesses. The door lock system may include self-adjusting spindles that engage and center a lock body in a door. The spindles may exert equal and opposing forces that center the lock body within the door and align the lock body with a latch.

Embodiments described herein relate to an exit device having a construction that facilitates visual inspection of the state of the exit device. Embodiments of the exit device include a visual indicator as to the state (dogged or undogged) of the exit device.

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 latch arrangement for fastening a panel of a door or a window to a frame element is provided. The latch arrangement includes a locking element mounted on the frame element and displaceable between a locked position in which the locking element can be engaged with the panel locking thereby the panel to the frame element, and an unlocked position in which the locking element is disengaged from the panel unlocking thereby the panel from the frame element. An actuating mechanism, optionally including a manually operable handle, is mounted on the panel and configured to selectively engage the locking element and to displace the locking element to the unlocked position. Where a stop latch provides deadlock functionality, the panel-mounted actuating mechanism preferably sequentially releases the stop latch and then displaces the locking element.

An exit device assembly for use in association with a door having a top, a bottom and a generally vertical surface. The exit door assembly includes an exit device configured to be mounted on the surface of the door, the exit device including a manually movable member, a latch mechanism configured to be mounted adjacent one of the top and the bottom of the door, the latch mechanism including a latch movable between a locking position and a non-locking position, and a non-rigid device for causing movement of the latch in response to movement of the manually movable member.

A universal door lock-driving assembly is installed in an exterior space of a door panel. The door panel is furnished with at least one of an embedded lock cartridge, an embedded vertical-extending lock bar assembly and an exposed vertical-extending lock bar assembly. The universal door lock-driving assembly includes a base set, an action unit, a driving member and a slidable unit. The slidable unit can assemble a first assembling member and a second assembling member. The first assembling member can apply a penetration slot on the base set to generate interaction with the embedded lock cartridge or the embedded vertical-extending lock bar assembly. The second assembling member can interact with an exposed lock bar. Thus, the universal door lock-driving assembly can be used to unlock at least the lock cartridge and the lock bar assembly.