Abstract: The reversible mortise lock of the present invention can be installed on either the left or right side edges of a door opposite the door hinges. The lock includes a housing with a live bolt pivotally and slidably mounted in the housing. The live bolt slides between an extended position beyond the housing and a fully retracted position within the housing. When fully retracted, the live bolt can be rotated 180° so that the beveled face of the live bolt can be reversed. A finger pivotally mounted within the housing blocks full retraction of the live bolt when the mortise lock is installed in the door.

Abstract: A stop arrangement for precluding disengagement of a mortise deadbolt lock element by a cam which is employed to extend and retract the element. The arrangement employs first and second stop arms angularly spaced from a cam, which are rotatable, along with the cam, and which engage the lock element to preclude over-rotation.

Abstract: A mortice lock is disclosed which has a lock casing which provides a first point of entrapment and a second point of entrapment, a latch bolt which can move between a latching position and an unlatching position, a handle for moving the latch bolt between the latching position and the un-latching position, a key cylinder, an operating assembly and a locking member. The operating assembly can move between a first position in which a deflectable portion of the operating assembly engages with the first point of entrapment and a second position in which the deflectable portion engages with the second point of entrapment. Only the key cylinder can move the operating assembly between the first position and the second position.

Abstract: A lock device includes a casing formed in a housing for rotatably receiving a rotary member which has an actuating finger and which is coupled to a handle with a driving shank, and a spring biasing device attached to the housing and engaged with the actuating finger of the rotary member for biasing the handle back to an original position and for biasing the actuating finger of the rotary member back to an original position when the handle is released, the spring biasing device is locked to the housing with a fastener to disengage the follower from the actuating finger of the rotary member when a spring biasing member is engaged between the handle and the housing to bias the handle back to an original position.

Abstract: A thumb operated door latch and lock assembly has an exterior grip and thumb lever, a motion converter, a key cylinder, a strengthening plate and an interior latch lever and locking knob. The thumb lever moves the converter which turns a latch tongue that extends through a receiver in the latch assembly. The interior lever turns a limited engagement interior hub collar. A figure eight opening in the collar turns the latch tongue to withdraw the latches. Turning the interior lever upward disables the thumb lever. Turning the lever to withdraw the latches moves a slide upward within guide plates. The slide turns an interior lever and an extended tongue on the key cylinder to withdraw the dead bolt simultaneously with the latches.

Abstract: A latch has a housing and a dead bolt shiftable on the housing between extended and retracted positions. A latch nut is rotatable on the housing and connectable to door handles and carries actuating and panic levers. An actuating element is connected between the dead bolt and the actuating lever, and a panic element is connected between the panic lever and a locking pawl and is movable between an unactuated position and an actuated position to shift the locking pawl into an unlocked position. A key cylinder on the housing has a movable actuating lug movable between a locking end positing and a freeing end position. A pivotal locking pawl is shiftable by movement the actuating lug of the key cylinder into a locked position blocking movement of the actuating element and holding the dead bolt in the extended position and an unlocked position freeing the bolt and actuating element.

Abstract: A combination door latch and deadbolt assembly that has first and second configurations for use with a door having a deadbolt aperture and a latchbolt aperture spaced by either a first vertical distance or a second vertical distance. The second vertical distance is less than the first vertical distance. In the first configuration, an insert slide is connected to an interconnect slide for vertical movement with the interconnect slide and the interconnect slide is operably connected to a deadbolt assembly via the insert slide. The insert slide and interconnect slide are movable vertically to move a deadbolt from an extended position to a retracted position in response to movement of an interior actuator from a first position to a second position. In the second configuration, the interconnect slide is operably connected to the deadbolt assembly without the insert slide.

Abstract: A lock device includes an actuating lever pivotally engaged in a lock housing for actuating a deadbolt of a latch device, two rotary mechanisms pivotally engaged in the housing and each having a rotary member pivotally engaged in a casing for coupling to an outdoor handle and an indoor handle, and the rotary member of one of the rotary mechanisms is secured to the casing for allowing the rotary member and the casing of the rotary mechanism to be rotated relative to the lock housing with the indoor handle only, and for preventing the outdoor handle from being brutally rotated by the unauthorized persons and for preventing the lock device from being destroyed or damaged by the unauthorized persons.

Abstract: A door lock with transmission mechanism, in which a main lock is installed at the side of the door, and an auxiliary lock is installed at each side of the main lock respectively, whereof the main lock has a main lock-tongue, and each of the two auxiliary lock has an auxiliary lock-tongue, whereby the main lock-tongue drives the auxiliary lock-tongue in each of the two auxiliary locks to move together corresponding to the rotation of door handle.

Abstract: A door locking device for a door cooperating with a door frame includes a cylinder lock, at least one elongated bolt, and an emergency unlocking mechanism. The elongated bolt is adapted to move linearly to engage to and disengage from the door frame. A transmission including an operating wheel translates circular motion of a rotor of the cylinder lock to a linear motion of the elongated bolt. The emergency unlocking mechanism includes a gear arm connected to a handle and adapted to turn the operating wheel when the handle is turned, disengaging the elongated bolt from the door frame.

Abstract: A differential linkage attachment of handles includes a first handle ring and a second handle ring placed on right and left sides, respectively, and set in a rectangular dead bolt shifting block independently. An end of the second handle ring is encircled with a first slanted latch bolt shifting plate, and an end of the first handle ring is encircled with a second slanted latch bolt shifting plate. All of the five parts turn around on a center axis. When the second handle ring turns forward or clockwise, the rectangular dead bolt shifting block or the first slanted latch bolt shifting plate is linked to turn around on the center axis independently, and when the first handle ring turns clockwise, the rectangular dead bolt shifting block or the second slanted latch bolt shifting plate is linked to turn around on the center axis independently.

Abstract: A transmission device for a door lock has a solenoid switch, a driven device and a linkage assembly. The solenoid switch has a solenoid core, a guide tube, a sleeve and a clutch cap. The guide tube is mounted in the solenoid core and has a connecting end. The connecting end is formed on one end of the guide tube and protrudes out of the solenoid core. The sleeve is mounted slidably in the solenoid core and around the guide tube and has at least one engaging tab formed on and protruding from the sleeve at one end adjacent to the connecting end of the guide tube. The clutch cap is mounted around the connecting end of the guide tube and has at least one engaging notch selectively and detachably engaging respectively with a corresponding engaging tab on the sleeve.

Abstract: An anti-panic lock assembly for a door and associated methods are provided. The lock assembly can be used to secure the door to a keeper structure mounted in a jamb of a door frame so that the assembly can be adjusted by first and second handles extending from the opposite sides of the door. The lock assembly generally includes a latch assembly with a latch member and a deadbolt assembly with a deadbolt member for engaging the keeper structure. The latch member is configured to be adjusted by a rotation of the handles between its extended and retracted positions. The deadbolt member is configured to be adjusted by a rotation of a deadbolt handle and a key lock mechanism between its extended and retracted positions. The assembly can be installed to provide an anti-panic feature from a select side of the door, by using a selective connection feature to selectively link one of the handles to the deadbolt assembly.

Abstract: A latch assembly having adjusting backset includes a casing, a latch bolt and a latch rear section. The latch bolt includes a bolt body and a fixed member connected with the bolt body. The top of the fixed member includes two positioning notches adapted to different backsets. A positioning member and the fixed member are disposed in a slide. The positioning member includes a positioning projection corresponding to the positioning notch at the front portion thereof. The latch includes a pin that can lift the positioning member to disengage the positioning projection from the positioning notch. Then, the positioning projection is moved to another positioning notch, thereby changing the backset. The latch assembly includes a positioning spring to keep the positioning projection fixed in the positioning notch. The latch assembly may include an upper connecting member, a lower connecting member and an assembly member to strengthen the latch assembly.

Abstract: An intuitively operable door locking arrangement and a method include, a lock-point arming input element that is connected directly to a handle-operated control element of the locking arrangement, rather than being connected directly to a lock-point of the door locking arrangement. The locking arrangement and method may be used in hinged single or multiple-panel installations, having single, and/or multiple lock-points, may allow keyless locking from outside, and may include a latching arrangement. In active door locking apparatuses, the lock-point is movable only through operation of the handle-operated control element. The lock point arming element is selectively moveable between an armed and a disarmed position thereof, and is configured and connected to the handle-operated control element in such a manner that the handle-operated control element may be used to move the lock-point to the locked position thereof only when the lock-point arming input element is in the armed position thereof.

Abstract: A four-way, field-reversible self-latching cabinet lock includes a cylinder and plug assembly shell that is rotatable with respect to a bolt housing cover for the lock. A locking device is provided to fix the cylinder and plug assembly shell in one of four orthogonal positions with respect to the bolt housing cover. The bolt housing cover is receivable by a bolt housing and conventional self-latching latch bolt. In this manner, pins in the cylinder and plug assembly may be retained in a desirable vertical position while a throw of the bolt can be adjusted to vertical, inverted, left-hand, and right-hand positions in the field without special tools or additional parts.

Abstract: A locker structure is disclosed. The structure comprises a housing, latch, bolt, sliding member triggering rod, positioned within the housing, wherein the sliding member has a bottom edge provided with a slot holding a spring and a steel bead such that the sliding member moves to urge at the bolt or disconnected from the bolt form a locking state and the handle cannot be opened, or open the locker via an external handle, the sliding member is provided with a securing hole to lock with a body plate having a vertical long slot, and a spring and steel beads are provided between the plate body and the sliding member such that the plate body can be triggered to slide up and down by means of the long hole so as to change the urging position of the triggering rod and the triangular latch can change into different position adaptable to door opening at the left and right side.

Abstract: A door lock of key-driven transmission structure which is comprised of a case, a swing arm, a first link bar and a second link bar, whereof the first and second link bars and a lock-bolt structure on the case can be driven by the swing arm to open or close lock. A first transmission piece is driven when the lock-bolt structure is actuated, and an actuator is driven by the first transmission piece to further drive the two top and bottom pull rods which further drive the two top and bottom lock-bolts to extend outward for locking, thereby to reach a combining action between the lock-bolt structure as well as the top and bottom lock-bolts. The lock-bolt structure is further through linking with a labor saving component installed on the second link bar to achieve the labor saving and easy operation effects.

Abstract: An independently interactive interconnected lock includes an interconnecting mechanism that retracts a latchbolt and a deadbolt when an inner handle is moved between an up position, an intermediate position and a down position. The deadbolt is retracted by a deadbolt lock mechanism as the inner handle moves from the up position to the intermediate position. The latchbolt is retracted by a latchbolt lock mechanism as the inner handle continues to move from the intermediate position to the down position. When the inner handle is moved to the up position, both the latchbolt and deadbolt are extended and the deadbolt lock mechanism is disconnected from the latchbolt lock mechanism such that manipulation of the latchbolt lock mechanism to retract the latchbolt does not retract the deadbolt. The inner handle operates with low handle torque because the deadbolt and the latchbolt are not retracted simultaneously.

Abstract: The locking device contains an axle, a bolt, a positioning plate, and a cylinder. The axle is connected to a thumb-turn knob and, from a circumference of the axle, a lever is extended perpendicularly. The bolt has a vertical trough in a rear section. An end of the lever is embedded in the trough. The positioning plate has an elongated opening inside which the axle is embedded. The cylinder is positioned adjacent to and above the rear section of the bolt. The cylinder has a key hole in the center and an activation bar extended from a circumference of the cylinder. When the thumb-turn knob or a key in the key hole is turned, the positioning plate is moved towards an opposite direction. In turn, the lever of the axle pushes or pulls the bolt in the same directions as the key or the knob is turned.

Abstract: A mortise lock includes a case having first and second sidewalls. A follower plate is pivotably mounted in the case and actuatable by a key-operable cylinder to move a latch bolt from an extended position to a retracted position. A locking plate is moveable by the cylinder through transmission by a lever link between an unlocking position allowing movement of the latch bolt and a locking position not allowing movement of the latch bolt. The locking plate is active when a connecting member is slideably extended through a slot in the first sidewall and through an engaging hole of the lever link into another engaging hole in the follower. The locking plat is inactive when the connecting member is slideably extended through another slot in the second sidewall and engaged in the engaging hole of the follower and not engaged in the engaging hole of the lever link.

Abstract: A lock includes a case, a key cylinder mounted to an outer side of the case, and a thumb turn mounted to an inner side of the case. A deadbolt is mounted in the case and coupled with a shank of the thumb turn and operably connected to a lock core of the key cylinder. The head is movable along a deadbolt axis between a retracted position in the case and an extended position outside the case when the lock core or the thumb turn is turned. Two hooks are mounted to the deadbolt and each pivotable between a retracted, unlocking position in the case and an extended, locking position outside the case about a pivot axis perpendicular to the deadbolt axis.

Abstract: An electronic door locking apparatus having a mortise lock including dead bolt and latch bolt installed therein, which is able to easily open a door from the outside by inserting a metal card having a magnet installed inside if a power source such as a dry battery is not supplied or if the locking apparatus is not useable due to other mechanical defects, and also able to perform a lock function since a dead bolt is locked if a door handle of an outer unit is rotated upwards when there are defects in a driving motor or electronic components.

Abstract: Several new components are provided for a mortise lock. First, a non-handed clutching assembly, including a pair of spindle hubs rotatable within a pair of outer hubs, is provided for a mortise lock. Second, a spindle-mounted lock-handing selector—which can be removed from one side of the lockset body while the lockset body is installed in the mortise of a door—is provided to set the handing of the clutching assembly. Third, an escapement mechanism is provided for a reciprocating-slide-based clutch-actuator assembly, enabling the slides to move into a position biasing a locker-carrying lever toward a hub-coupling position, even if the outer and spindle hubs are misaligned. Fourth, a guardbolt-actuated blocking assembly for a lockset is provided to block movement of the stop works or clutch works when the door is closed and the outside door handle is disabled.

Abstract: In a door panel integrated door stopper with a door lock housing integrated operating mechanism, comprising a door stopper bolt, a spring biasing the door stopper bolt downwardly, a pull member connected to the door stopper bolt for actuating the door stopper bolt, the operating mechanism is disposed in the door lock housing and includes an operating member movable between door stopper engagement and release positions, the operating member extends out of the lock housing through a rear wall opening thereof so that no operating structure is disposed at the side walls of the lock housing.

Abstract: A lock for use as a multipoint lock, the lock having: a lock body, a lock tongue which is moveable between a locking position and a free position, an actuator to move the lock tongue, a deadlocking member in the lock body and which is moveable between a deadlocking position to deadlock the lock tongue and an undeadlocking position, and, attachment means attachable to a remote lock operator to move the operator without any lost motion.

Abstract: A high security locking system can be used in a conventional pivot door adapted for use with a latch and deadbolt lock combination. The high security system can be a multi-point lock, received in a recess formed in a locking edge side of a door stile, cooperating with a linkage or other mechanism in a conventional deadbolt/location. The lock can be actuated with a keyed cylinder and thumb turn combination.

Abstract: A multi-point door lock assembly has a central lock and an extension bolt for securing the door to a door frame. The assembly has an actuator positioned at the central lock and moveable between a first and second position along an axis. The assembly further has an elongated extension bolt residing along a bolt axis. The actuator and the bolt are secured in a configuration that displaces the axis of the bolt in spaced relationship from the axis of the actuator by an adaptor having a body length. The adaptor has a first end connected to the actuator and a second end connected to the extension bolt, and an intermediate portion between the first and second ends configured to displace the bolt axis for the bolt to pass through an interior portion of an associated door member.

Abstract: In a lock of a door or a window with a basic lock and at least an auxiliary locking device and at least a first actuation arrangement for locking the lock, a second actuation arrangement separate from the first actuation arrangement is provided for unlocking the lock.

Abstract: A lock assembly has a body, a locking cylinder, a latching device, a linking device and a locking mechanism. The locking cylinder has a pushing lug. The linking device is connected to and driven by the latching device. The locking mechanism is driven by the pushing lug of the locking cylinder and has a bolt base, a pushing arm and a locking bolt. The bolt base is mounted slidably in the body and has an edge pushed by the pushing lug on the locking cylinder and a limiting tab. The locking bolt is slidably mounted on the bolt base and abuts with the limiting tab on the bolt base when the locking bolt retracts completely into or extends out from the body. The locking bolt has a blocking tab selectively blocks the linking device.

Abstract: A panic exit door lock includes a cover (20) mounted to an outer side (10b) of a door (10). A sliding member (34) is slideably received in the cover (20) and operably connected to a latch (12). A handle (24) is pivotably mounted to the cover (20) and operably connected to the sliding member (34) such that rotation of the handle (24) causes sliding of the sliding member (34) to move the latch between an extended position and a retracted position. A limiting member (32) is pivotably received in the cover (20) between a blocking position not allowing movement of the sliding member (34) and a release position allowing movement of the sliding member (34). An inner lock core (54) and an outer lock core (270) are respectively mounted to an inner side (10a) and the outer side (10b) of the door (10). Either of the inner and outer lock cores (54, 270) can be rotated by a key to move the limiting member (32) between the blocking position and the release position.

Abstract: A locking system for integrating into an entry door having a vertical expanse and providing simultaneous multi-port locking along the vertical expanse of the entry door. The locking system includes a rod positioned along the vertical expanse of a length at least co-extensive with a plurality of deadbolt locks positioned within the entry door. A plurality of deadbolt locks that provided space along the vertical expanse and a plurality of swing arms, each swing arm pivotally connected to the rod on first end thereof and connected to a deadbolt lock on a second end thereof. An actuator is employed for shuttling between first and second positions of the rod causing the swing arms to simultaneously extend the deadbolt locks for locking the entry door and withdrawing the deadbolt locks for unlocking the entry door.

Abstract: A mortice lock is disclosed which has a lock casing which provides a first point of entrapment and a second point of entrapment, a latch bolt which can move between a latching position and an unlatching position, a handle for moving the latch bolt between the latching position and the un-latching position, a key cylinder, an operating assembly and a locking member. The operating assembly can move between a first position in which a deflectable portion of the operating assembly engages with the first point of entrapment and a second position in which the deflectable portion engages with the second point of entrapment. Only the key cylinder can move the operating assembly between the first position and the second position.

Abstract: A door lock includes a bracket fixed to a door. A linking rod is slideably mounted to the bracket and includes a slot. A draw member includes a first end pivotably connected to the bracket and a second end operably connected to a retractor. The draw member further includes a guide slot. A pin slideably extends through the slot and the guide slot such that the movement of the linking rod causes pivotal movement of the draw member, which in turn, urges the retractor to move a latch bolt from an extended position to a retracted position. A follower is coupled to the pin to move therewith. An adjusting member is in threading connection with the follower and rotatable to move the follower and the pin relative to the linking rod to adjust a position of the second end of the draw member relative to the retractor.

Abstract: A mortise lock includes a case. A locking slide forms a bore to receive a spring and a steel ball to allow the locking slide to be slidable with respect to the lock case to abut against and/or disengage from a locking latch. The mortise lock is operated by turning an inside knob to drive a deadbolt and a latch lever and the locking slide is moved inward to engage a lever hub assembly thereby ensuring a locked condition. The mortise lock cannot be unlocked by operating an outside lever. When an inside lever is depressed, the lever hub assembly is driven to cause the rocker arm to push away a hooking lever and a knob spindle assembly, thereby retracting the deadbolt and the latch bolt and simultaneously moving the locking slide outward to show an unlocked condition, whereby the mortise lock can be unlocked by operating the outside lever.

Abstract: The locking device contains an axle, a bolt, a positioning plate, and a cylinder. The axle is connected to a thumb-turn knob and, from a circumference of the axle, a lever is extended perpendicularly. The bolt has a vertical trough in a rear section. An end of the lever is embedded in the trough. The positioning plate has an elongated opening inside which the axle is embedded. The cylinder is positioned adjacent to and above the rear section of the bolt. The cylinder has a key hole in the center and an activation bar extended from a circumference of the cylinder. When the thumb-turn knob or a key in the key hole is turned, the positioning plate is moved towards an opposite direction. In turn, the lever of the axle pushes or pulls the bolt in the same directions as the key or the knob is turned.

Abstract: A security lock arrangement (10) includes a carrier (40) to be mounted on a wing member. At least one latch bolt (28-34) is displaceably arranged relative to the carrier (40) between a retracted, unlocked position and an extended, locked position. An urging means (60) acts on the at least one latch bolt (28-34) for urging the latch bolt (28-34) to its extended, locked position. A drive means is mounted on the carrier (40) for driving the at least one latch bolt (28-34) at least into its retracted position against the action of the urging means (60). A displacement mechanism is interposed between the drive means and the at least one latch bolt (28-34), the displacement mechanism comprising a cam member (64) rotatably driven by the drive means, the cam member (64) acting on a follower of the at least one latch bolt (28-34), the cam member (64) having a maximum throw when the at least one latch bolt (28-34) is proximate its retracted position.

Abstract: A storm door lock assembly includes an inner member and an outer member with a movable member located therebetween, the inner member is connected with an inside door knob and the outer member is connected with an outside door knob. The inner and outer members each can operate the latch bolt. A mounting member is connected to the movable member and mounted to the dead bolt and a spring board is biased to the dead bolt to retract the dead bolt into the escutcheon. When the inside door knob is rotated, the mounting member is lifted by the movable member and the dead bolt is freely pushed by the spring board to retract into the escutcheon when the mounting member is lifted. The latch bolt and the dead bolt are both retracted into the escutcheon by rotating the inside door knob.

Abstract: A stop arrangement for precluding disengagement of a mortise deadbolt lock element by a cam which is employed to extend and retract the element. The arrangement employs first and second stop arms angularly spaced from a cam, which are rotatable, along with the cam, and which engage the lock element to preclude over-rotation.

Abstract: A door lock includes a case mounted in a door and an inside handle mounted to an inner side of the door. A latch bolt is operably connected to the inside handle and movable between an extended, latching position and a retracted, unlatching position. A spring device is mounted to a deadbolt for biasing the deadbolt from a retracted, unlocking position toward an extended, locking position. A positioning member engages with and retains the deadbolt when the deadbolt is in the retracted position. An auxiliary bolt is operably connected to the positioning member and movable between an extended position and a retracted position. The auxiliary bolt disengages the positioning member from the deadbolt when the auxiliary bolt is in the retracted position such that the deadbolt is moved to the extended position by the spring device.

Abstract: A mortise lock includes a case. A locking slide forms a bore to receive a spring and a steel ball to allow the locking slide to be slidable with respect to the lock case to abut against and/or disengage from a locking latch. The mortise lock is operated by turning an inside knob to drive a deadbolt and a latch lever and the locking slide is moved inward to engage a lever hub assembly thereby ensuring a locked condition. The mortise lock cannot be unlocked by operating an outside lever When an inside lever is depressed, the lever hub assembly is driven to cause the rocker arm to push away a hooking lever and a knob spindle assembly, thereby retracting the deadbolt and the latch bolt and simultaneously moving the locking slide outward to show an unlocked condition, whereby the mortise lock can be unlocked by operating the outside lever.

Abstract: A door lock includes a case, a deadbolt mounted in the case, and a key cylinder mounted in the case. The key cylinder includes a lock core operable to retract the deadbolt from an extended, locking position to a retracted, unlocking position. A positioning device is mounted in the case for retaining the key cylinder in place. The case includes two opposite lateral sides each having a key cylinder-receiving hole. The key cylinder is optionally mounted in one of the key cylinder-receiving holes from either of opposite lateral orientations in the case and includes at least one longitudinal groove formed in an outer circumference thereof. The positioning device includes a retainer slideable between the two lateral sides of the case and an operative member operable to move the retainer between a retaining position engaged with the at least one longitudinal groove of the key cylinder and a releasing position disengaged from the key cylinder.

Abstract: A deadbolt device for a door is disclosed that has a linkage assembly enclosed within a handle. The linkage assembly extends from a first end to a second end and is moveable from a locked position to an unlocked position. A lock housing extends through the door and includes a guide channel that extends from an interior side of the lock housing to an exterior side of the lock housing. A locking member, at least a portion of which is in the guide channel, is operatively connected to the linkage assembly and is moveable from a locked position to an unlocked position, which correspond to those of the linkage assembly. A biasing mechanism is operatively connected to the locking member and biases the locking member to its locked position. A dogging member is moveably connected to the lock housing such that the dogging member can move from an undogged to a dogged position.

Abstract: A lock assembly for use with a bolt movable from a retracted position to an extended position. The lock assembly includes an exterior assembly and an interior assembly having an interior actuator manually operable to move the bolt between the retracted position and the extended position. The exterior assembly includes an exterior actuator manually operable to cause the bolt to move from the retracted position to the extended position and inoperable to move the bolt from the extended position to the retracted position.

Abstract: A mortise lock is disclosed for securing a door. The mortise lock includes a chassis, a latch bolt, and at least one handle. The lock has a plurality of functional states, including a state in which input to a handle is prevented from retracting the latch bolt.

Abstract: A multi-functional mortise lock that can be rapidly converted between different functions without opening the mortise lock case by installing blocking screws that extend through threaded blocking openings in a sidewall of the case and into blocking interference with moving components inside the case. The moving components include a lock/unlock lever, a latch retract lever and a spindle hub. The blocking screws are stored in threaded storage openings in the sidewall of the case. The sidewall of the case is marked adjacent to the threaded blocking openings and storage openings to identify functions that will be performed when the blocking screws are installed in one or more of the blocking openings.

Abstract: A latch assembly comprises a first portion (32) defining an opening and a second portion (54) slidably disposed in the opening for movement of the first portion along the second portion. The second portion includes a stop which is larger than the opening for preventing further movement of the first portion along the second portion in a first direction. A securing element releasably connects the first portion and the second portion in a first relative axially connected position. In a mortise lock (20), the first portion and the second portion are thus movable together relative to the housing so that the first portion at least partially non-rotatably projects outwardly from the opening in the edge wall of the housing in an extended position and is inside the housing in a retracted position. Disconnecting the first portion from the second portion allows the first portion to move along the second portion in the first direction to a second axial position.

Abstract: A door lock includes a latch bolt and an auxiliary bolt. A stop member is supported by the auxiliary bolt and is movable relative to the auxiliary bolt between a position in which it prevents a guide element moving to a position providing deadlocking of the latch bolt, while the auxiliary bolt is in a protruding position, and a position in which it allows the guide element to move to a position providing the deadlocking of the latch bolt. The stop member allows the guide element to move to the position providing deadlocking of the latch bolt only in case both the auxiliary bolt and the latch bolt are first moved to retracted positions.

Abstract: A door lock (10) having a lock body (11), an external handle and an internal handle (12), a rotatable interconnecting member (13) to interconnect the internal handle and the external handle, and a mechanism to allow the lock to have a passage mode, and a privacy mode and a deadlock mode, in one embodiment the mechanism comprises an outer hub (14) and an internal hub (15) which are inside the lock body, in a second embodiment a remote control means is provided to allow at least some of the modes to be operated manually or by remote control.

Abstract: Safety lock for doors, gates or the like, comprising a box-shaped body (2) which contains and supports a bolt (5) able to slide between several operating positions (9, 10), actuating means (8) for displacing the bolt (5) between the above-mentioned position, a movable plate (15) capable of engaging by means of engaging means (17) inside seats (14) formed along the bolt (5) so as to retain it in the above-mentioned retracted and projecting positions. The lock (1) also has adjustment means (20) which are accessible from the outside of the box-shaped body (2) and are able to act on the movable plate (15) so as to engage it/disengage it with respect to the bolt (5) so as to allow the latter to be arranged with the part (5a) projecting by the desired length. The movable plate (15) is mounted rotatably on the box-shaped body (2) about an axis of rotation (Z) by means of a pin (19); with respect to which it is able to rotate as a result of the action of adjustment means (20).