Abstract: A bolt module is disclosed. The bolt module comprises: a bolt moveable between a thrown position and a retracted position; an anti-thrust member moveable between a release position in which the bolt can be retracted and a plurality of blocking positions obstructing driving back of the bolt under action of an external force on the bolt and, a first rotor assembly capable of accepting a drive element, the first rotor assembly arranged to drive the bolt and to move the anti-thrust member between the plurality of blocking positions and the release position. Each of the plurality of blocking positions may respectively limit to different extents the driving back of the bolt under action of an external force on the bolt. There is also disclosed a leaf or door comprising the bolt module, wherein the bolt module is mounted on the leaf or door for securing the leaf or door.

Abstract: An electronic door lock includes a controller, a first touch sensor, and a lock operator. The first touch sensor detects touch on an exterior an exterior side of a door. The lock operator is selectively operated by the controller to unlock a deadbolt according to the touch detected by the first touch sensor. The electronic door lock is located on an interior side of the door. The first touch sensor may be electrically coupleable to a deadbolt lock for the deadbolt to act as an electrode of the touch sensor. The first touch sensor may detect the touch capacitively.

Abstract: A push-pull passage lock housing comprises upper and lower housings, and first and second connecting components. The upper and lower housings are connected to form a housing with a middle protuberance. The first connecting component is sleeved on the housing and located at one side of the protuberance, while the second connecting component is sleeved on the housing and located at the other side of the protuberance. The first and second connecting components are fastened together. The push-pull passage lock housing facilitates installation and improves assembly efficiency.

Abstract: A folding table includes a support stand, a fold mechanism, and a table top. The support stand includes a top seat having a first engaging portion. The fold mechanism includes a fold seat pivoted to the top seat, a resilient unit, and an operating member having a second engaging portion. When the table top is at an unfolded position, the operating member is operable from a lock state, where the second engaging portion of the operating member is biased by the resilient unit to engage the first engaging portion of the top seat, to an unlock state, where the second engaging portion is disengaged from the first engaging portion against a resilient force of the resilient unit, thereby permitting pivot movement of the table top to the folded position.

Abstract: A lockable spring-biased latchbolt in some embodiments of a door latch is manipulatable from a first side (protected side) of a door by translation to an opened-door position, and a separate element situated alongside the latchbolt is manipulatable from a second side (less protected side) of the door to contact and move the latchbolt to the opened-door position only if movement of that second element is not prevented by a locked position of a locking means. The locking means in these embodiments does not interfere with opening the door from the first side. The locking means can be changed back and forth between its locked position and its unlocked position by use of a key (or combination or code) from the second side of the door, and optionally from the first side of the door with or without the key (or combination or code).

Abstract: A new door knob assembly for allowing a door to be opened easily without the need to turn a knob. The assembly includes an outside door knob and an actuating inside door knob respectively positioned within openings on the outside and inside surfaces of a door. A locking body which communicates with the door knobs is positioned in an opening on the side edge of the door. The locking body has a locking shaft with a locking head on one end which protrudes from the side edge and retracts into the door. On the other end, engagement arms are fitted with obstruction openings. A locking rod which extends in from the inside knob has a locking nut which when positioned in the obstruction openings prevents the locking head from retracting into the door. When the locking nut is moved out of the obstruction openings by actuating the inside knob the locking head can retract into the door.

Abstract: A power control circuit assembly for an electric door latch mechanism comprises a load control circuit module configured to distribute a DC operating voltage to power an electromechanical door latch mechanism and its associated access control device. An energy storage device such as a rechargeable battery is coupled to the load control circuit module and is configured to deliver a DC voltage to the load control circuit module wherein the DC energy storage device voltage supplies the DC operating voltage. A rectifier is configured to receive an input AC voltage and convert the input AC voltage to an input DC voltage. The input DC voltage is adapted to deliver an energy storage device recharge voltage. An energy storage device voltage detection module is configured to interrogate a DC voltage supplied by the energy storage device.

Abstract: The present invention relates to a cooling device (1) comprising a body (2) wherein the objects to be cooled are placed, at least one door (3) providing access into the body (2) and a door opening mechanism (4) situated on each door (3), having a handle (5) that rotates around the axis parallel to the short side of the door (3) and that the user moves to open the door (3), an extension (8) with at least some portion in geared form, extending from the handle (5) towards the body (2) parallel to the side wall of the door (3) and moving together with the handle (5), a latch (6) actuated by the movement of the handle (5) having a pusher (7) disposed at the end portion, providing the door (3) to separate from the body (2) and a transmission member (9) that transmits the movement of the extension (8) to the latch (6), and wherein the door (3) thereof can be easily opened and closed.

Abstract: A locking device includes a lock and a key. The lock includes a housing, a cylindrical core inserted into and rotatable relative to the housing, and a limiting member that is mounted movably between the housing and the cylindrical core to permit or prevent the relative rotation between the housing and the cylindrical core and that extends into a helical keyway formed in the cylindrical core. The key has a helical blade capable of being inserted into the helical keyway to access the limiting member, so as to move the limiting member to permit the relative rotation between the cylindrical core and the housing.

Abstract: A latch has a displaceable latching element in a housing for engagement with a separate striker arm to be latched behind an engagement shoulder of the latching element. The housing mounts a cylinder lock to receive a key from the front. A rotor is mounted on the rear of cylinder lock and rotation of the key causes rotation of the rotor to drive a locking element to engage and lock the latching element. The rotor may also be axial displaceable against spring biasing responsive to a rear unit pushing element whereby unlocking from a rear cylinder lock may rotate the rotor to unlock and pushing causes the latching element to be displaced against its biasing to release the striker arm.

Abstract: A door lock includes a deadbolt and a latchbolt each movable between a thrown position and a retracted position, an inside lever operable to move the latchbolt between the thrown and retracted positions, and an outside lever configured in one of a locked and unlocked state in which the outside lever is operable to move the latchbolt between the thrown and retracted position. A thumbturn is coupled to the deadbolt and is movable between a first position in which the deadbolt is in the thrown position, the latchbolt is in the thrown position, and the outside lever is locked, a second position in which the deadbolt is in the retracted position, the latchbolt is in the thrown position, and the outside lever is locked, and a third position in which the deadbolt is in the retracted position, the latchbolt is in the thrown position, and the outside lever is unlocked.

Abstract: A latch assembly is described. The latch assembly includes a casing. The latch assembly provides for the transfer of rotational force to translation plates. The rotational force drives translation plates and extends the translation plates from the latch assembly. A first translation plate is mechanically engaged to the casing. A second translation plate is mechanically engaged to the casing. The latch assembly includes a key assembly including a rotatable cam. A toggle cam is pivotally engaged to the casing via a pivot axle, and rotating the cam contacts the toggle cam to extend or retract both the first translation plate and the second translation plate from the casing.

Abstract: A latch has a displaceable latching element in a housing for engagement with a separate striker arm to be latched behind an engagement shoulder of the latching element. The housing mounts a cylinder lock to receive a key from the front. A rotor is mounted on the rear of the cylinder lock and rotation of the key causes rotation of the rotor to drive a locking element to engage and lock the latching element. The rotor may also be axial displaceable against spring biasing responsive to a rear unit pushing element whereby unlocking from a rear cylinder lock may rotate the rotor to unlock and pushing causes the latching element to be displaced against its biasing to release the striker arm.

Abstract: A drawer lock includes a housing with a cam received therein and the cam has a driving member. A deadlocking bolt in the housing has a driven member which is located so that it can be contacted by the driving member. A main bolt located in the housing and is driven by the cam. The main bolt has a stop portion which can be contacted by the driving member. The main bolt has an engaging stepped face. When the deadlocking bolt is pushed down responsive to closing the drawer, the driven member is engaged with the engaging stepped face by a bias force of a resilient member so that the drawer lock cannot be unlocked. When the cam rotates in one direction, the driving member contacts the stop portion to position the main bolt so that the drawer is not locked unintentionally.

Abstract: A door lock whose transmission mechanism is controlled by a key. It includes a pivotal part that drives a lock tongue to retract into or extend out of the housing. A vertical bar moves vertically to drive the auxiliary lock ensembles to open or close the lock. The vertical bar uses a horizontally shifting lock chip to control the lock. The lock chip is driven by a key via a lock core.

Abstract: A gate latch is adapted to be installed on a gate post and a complementary striker arm is secured typically to a gate so that, upon closure of the gate, the striker arm engages a displacable latching element mounted in a housing of the latch to displace the latching element. The latching element is biased towards its open position but when the striker arm engages with the latching element it is displaced, thereby releasing an interference portion of a biased locking element, whereby the locking element is released to move under its biasing into a locking position so that self-locking is provided for the latch. A rotary release mechanism may be actuated to return the locking element so that the latching element can be released to release the striker bar and the gate may be opened.

Abstract: A door latch for securing a door of a building in a closed condition, the door latch including a housing, a handle rod, a lock set assembled into the housing and including a movable key tab, a main lock pivotally connected to the handle rod and including a connecting slot, the main lock being movable for lifting an engagement end, an unlocking latch pivotally connected to the handle rod and including an engagement structure for coupling with the connecting slot and a lock bar assembled to the housing and being movable relative to the housing between a locked position and an unlocked position. Wherein, when the lock bar is in the locked position, the main lock is not pivotable from a position exterior to the building by the use of the handle rod, the main lock being pivotable from a position interior to the building by manual lifting.

Abstract: A door latch for securing a door of a building in a closed condition, the door latch including a housing, a handle rod, a lock set assembled into the housing and including a movable key tab, a main lock pivotally connected to the handle rod and including a connecting slot, the main lock being movable for lifting an engagement end, an unlocking latch pivotally connected to the handle rod and including an engagement structure for coupling with the connecting slot and a lock bar assembled to the housing and being movable relative to the housing between a locked position and an unlocked position. Wherein, when the lock bar is in the locked position, the main lock is not pivotable from a position exterior to the building by the use of the handle rod, the main lock being pivotable from a position interior to the building by manual lifting.

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 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 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: The invention generally relates to a latch apparatus having a locking live bolt. One embodiment of the invention is a latch apparatus having a housing with opposed plates that are spaced apart and secured to each other by support arms formed from the plates. A live bolt of the apparatus is slidably mounted in the housing and horizontally actuated between an extended and a retracted position. A live bolt hub is mounted in the housing and actuates the live bolt. A slide, actuated by a rotatable cam, is mounted in the housing and moves vertically between a first position and a second position. In the first position the slide is disengaged from the live bolt, and in the second position the slide locks the live bolt in an extended position.

Abstract: A latching device for a lock, comprising a housing, a clutch device, a first latch, a first latch driving member, a second latch, a second latch driving member and a latch spring, so as to provide a function of multiple locking actions.

Abstract: A rose locking mechanism developed with a hybrid lock architecture for a door designed to incorporate the functionality of a cylindrical lock architecture with the ease of installation of a tubular lock architecture is provided by the present invention. The hybrid lock architecture comprises a chassis assembly having an inside chassis assembly and an outside chassis assembly that are telescopically engaged to accommodate different door widths. A door latch assembly is operably connected to the chassis assembly for retroaction and extension of a bolt. A handle is mounted on a spindle on either side of the chassis assembly wherein rotational motion imparted on one of the handles is converted to linear motion within the chassis assembly in order to retract the bolt of the door latch assembly. The inside chassis assembly includes a rose locking mechanism positioned radially outward of said inside spindle.

Abstract: A motorized locking mechanism for locking and unlocking a device having a hub rotatable by a handle about a hub axis. A reversible motor turns a threaded spring screw to move a locking spring and vertically drive a connecting arm between locked and unlocked positions. A locking slide is mounted on the connecting arm and pivots parallel to the hub axis. The parallel pivoting motion of the locking slide protects the locking mechanism against damage. If the locking slide is temporarily prevented from moving into or out of locking engagement with the hub, the motor may still turn and the locking spring subsequently moves the locking slide in the desired direction without the necessity of reactivating the motor.

Abstract: A remote-controlled door lock includes a housing provided inside with a lock base, a deadbolt, a battery base, a circuit board and an actuating device. The deadbolt is fixed with a stopper on the center portion. The locking button of a remote controller is pressed to send out a locking signal to the circuit board to start the motor of the actuating device to rotate. Synchronously, the rotating shaft of the motor actuates a rotary member to rotate together with its notch, which rotates to reach the stopper of the deadbolt and holds the stopper immovable therein, rendering the deadbolt unable to be moved inward. Thus even if the lock rods of the lock base are pried unlocked, the door lock is still impossible to be unlocked before the actuating device is driven by a remote controller to release the deadbolt, having best effect of anti-theft.

Abstract: A lock which includes a bolt which is movable between a locked position and an unlocked position against the action of a biassing element such as a spring, first retaining element which is engaged with the bolt and which retains the bolt in the locked position and which is movable between a first position at which the first retaining element restrains the bolt from being moved from the locked position to the unlocked position and a second position at which the first retaining element restrains the bolt from being moved from the unlocked position to the locked position, remotely actuable release element, which when actuated, causes movement of the first retaining element from the first position to the second position, and handle element for moving the bolt from the locked position to the unlocked position when the first retaining element is disengaged from the bolt.

Abstract: A door lock-and-handle assembly includes a housing receiving a latch bolt therein, a spindle for driving the latch bolt between extended and retracted positions, a handle coupled to the spindle, a sliding member connected to the latch bolt, a driving member coaxially coupled to the spindle and engageable with the sliding member, a locking member movable between locked and unlocked positions to engage and disengage the driving member, and a lock releasing member including a cam mechanism that has a cam member and a cam follower formed on the sliding member and the locking member, respectively, for moving the locking member from the locked position to the unlocked position when the latch bolt is pushed toward the retracted position by an external force.

Abstract: An automatic locking mechanism engages a deadbolt lock after a prescribed time interval following entry. The mechanism employs a spring-operated mechanical timer, which may be actuated when a key or thumbturn is turned to unlock the door, and avoids the need for a key to set the deadbolt. The mechanism includes a gear system for retracting and inserting the deadbolt and a mechanical restraint to withhold the deadbolt until the timer has expired. In a suggested embodiment, a cam attached to one of the timer gears removes the restraint when the timer runs down. This deploys the deadbolt, automatically locking the door. In another embodiment, automatic locking may optionally be disabled by inhibiting coupling between the gear system and the timer spring.

Abstract: A door lock device is disposed on a door (1). The door (1) has an upper through hole (11) and a lower through hole (12). The door lock device has a latch bolt device (6) disposed on the door (1), a case frame (2) having an upper hollow cylinder (22) inserted through the upper through hole (11) and a lower hollow cylinder (23) inserted through the lower through hole (12), a first pressing plate (8) disposed on the case frame (2), a core (3) disposed in the upper hollow cylinder (22), a lock fastener device (4) disposed in the upper hollow cylinder (22), and a drive mechanism (5) disposed in the upper hollow cylinder (22). The drive mechanism (5) has a rack (53) to drive the latch bolt device (6). A locking plate (71) covers the upper through hole (11) and the lower through hole (12). A decoration plate (72) is disposed on the locking plate (71). A second pressing plate (8′) is disposed on the decoration plate (72).

Abstract: A holdback dog for a mortise lock including a holdback dog slidably mounted to a tab on the mortise lock locking link. The holdback dog is activated by first retracting the latchbolt using the inside handle and then unlocking the lock using either the key cylinder or the inside thumbturn. When the lock is unlocked, the locking link moves downward, placing a tab on the holdback dog slide in confronting engagement with a corresponding tab on the bolt slide. After the inside handle is released, the holdback dog tab holds the bolt slide, and therefor the latchbolt, in the retracted or "dogged" position. For normal or "undogged" operation, the slidable mounting of the holdback slide allows the bolt slide tab to engage the holdback dog tab and push the holdback dog slide out of the way, when the lock is unlocked and either handle is operated, thereby permitting normal operation.

Abstract: The present invention relates to an arrangement for a locking mechanism comprising a lock bolt spring-assisted in the intended direction of locking, which is contained inside a lock casing connected to a plate capable of attachment along the side of a door. An actuating arm projects laterally form said lock bolt and capable of actuation by means of a handle connection extending through a door of the intended kind and a handle projecting on either side of the door. A pivoting follower acts between said handle and actuating arm for the purpose of actuating the actuating arm and the lock bolt. The arrangement has a lock component capable of being caused to move in a linear direction arranged in such a way as to be capable of displacement by means of a pivotally mounted lock component carrier.

Abstract: A locking receptacle and a locking device for securing a mailbox, package delivery box, or other receptacle requiring a single opening of the receptacle door for a mailperson or package delivery person to insert a package being delivered and upon subsequent closing of the door locking until unlocked by a person having a key or combination therefor to receive the delivery. The locking device mounts to the inside of the receptacle and has an arm which is pivotally attached to the door of the receptacle and to a reciprocally pivotal locking disk. A first pivoting lever is positioned to engage a slot in the periphery of the locking disk when the door is closed so as to restrain the locking disk and the door in a closed position. A spring-biased, reciprocally pivotal counting disk is arranged to turn with the locking disk as the door is opened and to lock in that position by means of a second pivoting lever which engages a slot in the periphery of the counting disk.

Abstract: A door lock, particularly well suited for use with a safe which includes a movable door latch mechanism having a lock bolt abutment surface. The door lock comprises a casing having a locking bolt-receiving aperture in one of its walls. The casing is to be mounted to the door, for example, on the inside surface of the door with the bolt-receiving aperture adjacent the bolt-abutment surface of the door latch mechanism. A locking bolt is longitudinally slidably mounted with the casing for movement at an acute angle relative to the bolt abutment surface of the door latch mechanism between a locked position projecting through the aperture in the casing and into abutment with the abutment surface of the door latch mechanism and an unlocked position out of abutment with the abutment surface of the door latch mechanism and retracted into the casing.

Abstract: A combination lock/deadbolt assembly connection technique is disclosed for connecting the bolt of the combination lock to the deadbolt of the deadbolt assembly to provide a lost motion connection while at the same time to retain the ability to position a magnetic anti-attack interlock within the bolt of the combination lock. A connecting shaft is disposed between the bolt and the deadbolt and a spring bias force introduced between the two bolts. The shaft may be attached rigidly at one end to either the lock bolt or deadbolt. The opposite end is loosely attached by retaining rings or retaining rings to accommodate the movement of the loosely attached bolt with respect to the shaft thereby providing a lost motion connection. A compression spring is disposed intermediate to the lock bolt and the deadbolt to provide a separating or extending force.

Abstract: A multi-point door lock system comprising an active lock and an inactive lock for use on single or double doors is self-teaching, provides one hand control of shoot bolts, and provides audible and tactile feedback associated with shoot bolt extension and retraction.

Abstract: A lock system adapted to be used with both conventional mortise and cylinder locks includes an electronic socket to removably receive a button-like metal casing having an integrated circuit therein. The socket transmits code to a microprocessor based circuit which control a rotary two-directional motor. In one embodiment, the motor turns a cam which lifts, or lowers, a frame-like slide having a plunger which fits into a cavity of the cylinder to lock the cylinder.

Abstract: A security lock for doors of dwellings, gates and the like comprises a pump-type locking mechanism for operating a bolt, and a double-bit locking mechanism for locking the pump mechanism in its locking condition. The lock preferably has both a key which can operate only the pump mechanism and a key which can operate both mechanisms. A cover made of plastics material is associated with the key and can be fitted onto the operative portion of the key in order to protect its teeth against dirt and against the risk of breakage as a result of the key being dropped.

Abstract: To prevent the opening of an electronic combination lock by using a strong magnet to operate a stepper motor, a magnetic interlock is included in the lock structure. A magnetic pin is held in a retracted position by a small magnet when a strong attack magnet is positioned to attempt to open the lock, the magnetic pin is attracted from the holding magnet and extended to bridge the bolt and lock housing, blocking the retraction of the bolt.

Abstract: A dead bolt assembly for use with a combination dial lock assembly includes a housing structure adapted to receive a combination dial lock assembly. The housing structure includes a bolt hold back assembly which prevents extension of a dead bolt into a door strike. The bolt hold back assembly is operable from the inside of the door preventing manipulation of the combination dial on the outside of the door. Arranging the bolt hold back assembly in the housing permits ease of replacement and/or repair of standard or off the shelf type combination locks with the dead bolt assembly. The dead bolt assembly also includes a spring loaded pin arrangement which avoids a lockout situation. The housing structure includes a slot in the back plate which facilitates installation and/or removal of a combination dial lock assembly by permitting the lock shaft to slide into the housing structure without requiring removal of the combination dial or lock casing.

Abstract: A three stage lock unit according to the teachings of the preferred embodiment of the present invention is shown as including a patented combination lock secured within an outer housing of the lock unit which is secured to a mail box door or any small door. Combined with the combination lock is a push button constrained by the combination lock until the correct lock combination is dialed releasing an arm of the push button placed to utilize a hole in the door previously used for another type of lock. The push button arm extends inward to an inner housing to contact the sliding spring mounted door latch within a slot of the latch and opens the unit door when pushed inwardly. A spring activated pin within the door latch extending into the slot to meet the push button arm helps to close the system smoothly by providing an auxiliary force through pressure on the push button arm to relatch with the combination lock latch.

Abstract: An electronic door locking apparatus which can perform a number of functions is provided. The apparatus features a locking plate which is operated by solenoid action in such a manner that battery drain is minimized. The apparatus may remain in an unlocked position for long periods of time without draining power.

Abstract: A latching assembly having a retractable latch bolt and a slide bar which retracts the latch bolt by moving either forwardly or rearwardly from an intermediate position. The latching assembly has a rotatably mounted locking rod that rotates 90.degree. between a locking and an unlocking position. The assembly is arranged with a "panic release" system, in that with the locking rod in its locked position, it is possible to push an "inside" button or cylinder forwardly so as to move the locking rod to at least a partially released position to permit the latch bolt to be retracted. Thus, the latch bolt can be retracted from the inside location whether the locking rod is in its locking or unlocking position, but cannot be retracted from the outside location when the locking rod is set in its locked position.

Abstract: The invention concerns a lock for doors or windows, with two latches each pivoting about a pivot pin being provided in the one component and of which the mutually facing ends in the locked position engage in mutually opposite directions an undercut surface of a locking bolt mounted on the other component, this locking bolt cross-sectionally being a wedge-shaped or conical tip by means of which the two latches can be forced apart against the opposing force of a spring, this lock being designed so that unauthorized forcible opening in the absence of a key is at least made appreciably more difficult.

Abstract: A handle device for a door which is formed of an assembly installed in a door panel and has a handle grip connected thereto by a pivot pin. A latch is retractably mounted to the assembly and interlocked with the handle grip. A lock is disposed within the assembly and is provided with a cam secured to a rotor of the lock which checks the receding slide of the latch. The lock cam is formed in the shape of a disc and is closely fitted in a circular recess of the assembly.

Abstract: A cell door lock for a cell door which pivots on a vertical axis includes a lock casing for mounting adjacent a door jamb associated with the door. A locking barrel is rotatably mounted to the casing for rotation on an axis parallel to the axis of rotation of the door and includes a locking element extending from the casing toward the door for selectively engaging the surface of the door opposite the door jamb for holding the door in a closed position. A movable locking bar co-operates with the barrel for selectively preventing rotation of the barrel to selectively lock the door in its closed position.

Abstract: A lock set comprises a housing having a latch bolt assembly supported therewithin. The bolt assembly includes a bolt movable between latched and retracted positions. A retractor slide is connected to the bolt and is supported by the housing for longitudinal sliding movement relative thereto between bolt retracted and latching positions. Axially movable and rotatable first drive member extends transversely of the direction of movement of the bolt and is engaged with the retractor slide for movement thereof between the bolt retracted and latched positions. The first drive member includes a locking surface. An operating assembly comprises a hand operator having a locking slot formed in an axially extending portion thereof. A cylinder having a plug portion is disposed within the hand operator, the plug portion being rotatable relative thereto.

Abstract: A mechanism for smoothly and reliably operating a drop-bolt lock in which the drop-bolt operating mechanism includes a slidable bolt member carrying a cross slidable biased actuator member operable by cams for smooth sliding operation. Guide rails guide the sliding movement of the bolt member and the actuator member it carries, but the guides include a stop for cooperating with a lug on the actuator member to stop movement of the bolt unless and until the actuator member is forced away from the stop.

Abstract: A solenoid-operated door lock has a pivotally mounted deadlock lever which can lock either a latchbolt or a deadbolt. The locking and release movement of the deadlock lever is controlled by pivoting a release lever which is biased by a spring to maintain the deadlock lever in its selected operating positions. A solenoid-controlled main operating lever pivots to extend or retract the latchbolt or deadbolt through a lost motion connection. The lost motion connection ensures that the deadlock lever is moved to its release position before the latchbolt or deadbolt is retracted into the lock. The lock includes a triggerbolt which is extended when the door is open and is pushed into the lock when the door is closed. Switches are provided to monitor the operational condition of the lock and the position of the door. Indicator lights are provided at a remote guard station to show the operational condition of the lock. A switch is also provided to control the energization current of the solenoid.

Abstract: A key operated doorlock, which may incorporate a deadbolt, has a bolt housing that is mounted on the exterior of the door and is held there by being fastened to a spacer disposed within the door and a mounting plate at the interior side of the door. The main bolt is locked in place with a secondary locking apparatus which may include a barrel lock which operates a bolt which cooperates with a keeper opening in still another bolt. The latter engages a keeper opening that forms part of the housing. A lever system is provided which permits operation of the third bolt when permitted by the state of the second mentioned bolt.