Abstract: A lock includes an inner handle having a locking bar received therein and an outer handle connected to a spindle with a retaining base received therein which has two first grooves defined therein. A cam is connected to the retaining base and has two second grooves which communicate with the first grooves so that a locking piece is movably received between the retaining base and the cam with a spring biased between the locking piece and the retaining base. The locking piece has two flanges movably received in the first grooves and the second grooves. A slide is movably received in the cam and contact the locking piece at one end thereof and the locking bar at the other end thereof so that the two flanges of the locking piece are disengaged from the second grooves when the locking bar is pushed. Therefore, the outer handle can be freely rotated.

Abstract: A driver element in this lock has two outer surface sections. The first of the sections has a first geometrical cross-sectional configuration which engages an outer lever spindle in both the locked and unlocked condition. In the unlocked condition the first section also engages an outer driver spindle which rotates with the outer lever handle and outer lever spindle and engages the latch retraction structure for retraction of the latch. In the locked position, a push button on the inner handle pushes the driver such that a second section of the outer surface of the driver is aligned with the outer drive spindle and the second section is free of driving engagement with the outer driver spindle such that operation of the latch is prevented when the outer lever handle is rotated.

Abstract: An outside handle assembly of a lock includes an outside lever handle, an outside handle spindle secured to the outside lever handle to rotate therewith and including a first slot defined in a periphery thereof, and an actuating spindle mounted in the outside handle spindle and operably connected to a retractor. The actuating spindle includes a second slot aligned with the first slot of the outside handle spindle. A catch is mounted in the actuating spindle and has a first end pivoted to the actuating spindle and a second end. A tapping plate is slidably mounted in the actuating spindle and connected to the tail piece to move therewith. When the lock is in an unlocked status, the outside handle spindle and the actuating spindle rotate synchronously, as the second end of the catch extends through the second slot of the actuating spindle into the first slot of the outside handle spindle.

Abstract: A driver element in this lock has two outer surface sections. The first of the sections has a first geometrical cross-sectional configuration which engages an outer lever spindle in both the locked and unlocked condition. In the unlocked condition the first section also engages an outer driver spindle which rotates with the outer lever handle and outer lever spindle and engages the latch retraction structure for retraction of the latch. In the locked position, a push button on the inner handle pushes the driver such that a second section of the outer surface of the driver is aligned with the outer drive spindle and the second section is free of driving engagement with the outer driver spindle such that operation of the latch is prevented when the outer lever handle is rotated.

Abstract: A free-wheeling lever handle controller for operating a mortise lock provides free-wheeling functionality while maintaining the full operational characteristics of various mortise lock functions. A lock mode receiving mechanism connectable to the lock output is used to detect the unlocked and locked conditions of the mortise lock, and correspondingly engage and disengage the free-wheeling mechanism. The free-wheeling mechanism has a split shaft connected between a handle on the controller and a handle input on the mortise lock. The two halves of the shaft may be coupled and uncoupled via a shaft lock movable perpendicular between locked and unlocked positions. In the unlocked position the shaft lock connects the two halves of the shaft to rotate together when the handle is turned. In the locked position the shaft lock disengages the two halves of the shaft to rotate separately and allow the handle to free-wheel with operating the door latch.

Abstract: A switch for a door or window has inner and outer handles which are both axially fixed to withdraw the locking element of any type of lock. The switch has an actuating shaft which extends between the inner and outer handles for withdrawing the locking element. The actuating shaft has overall dimensions which represent the only dimensions allowing the switch to fit into the lock. An actuating element associated with the inner handle is used to selectively set at least two states of operation of the outer handle. A transmission element inwardly linked to the actuating element extends between the inner and outer handles at least in an area of the actuating shaft that extends through the lock and within the limits of its overall dimensions.

Abstract: A door lock comprises a driver hub connected to a door lever, a driven hub, a latch lever movable by the driven hub for retracting the lock's bolt to open the lock, and a catch mechanism for selectively connecting the driver hub to the driven hub. The catch mechanism includes an idle position in which the driver hub moves without moving the driven hub and an engaged position in which the driver hub moves the driven hub and thus the lever and the bolt. A state selection mechanism is provided to displace the catch mechanism between its idle and engaged positions. An actuating mechanism, e.g. a solenoid, selectively positions the state selection mechanism such that the latter causes the catch mechanism, when driven by the driver hub, to adopt one of its idle and engaged positions such that the catch mechanism respectively drives, or not, the driven hub.

Abstract: A freewheeling clutching design for enabling a freewheeling movement of an outer door handle with respect to a latch assembly of a lock when the lock is in a locked state. A clutch column is axially movable to engage with or disengage from a latch assembly by way of turning a control member which simultaneously moves axially. The outer door-handle performs a normal operation of opening a door when the clutch column engages the latch assembly, while it performs the freewheel turning movement to prevent an undesirable transfer of force to internal components of the lock when the clutch column engages the latch assembly.

Abstract: A lock which can be accommodated within the thickness of an opening panel includes two nuts rotatable about a common axis and attached to respective corresponding operating members. Each nut can turn freely about its axis relative to the other nut. The latch bolt is attached to a selector member mobile between two predetermined positions in the transverse direction corresponding to the thickness of the casing of the lock. Each nut is attached to a corresponding arrangement of the lock adapted to engage with the selection member when the latter is in its position near the nut, in order to actuate the latch bolt when the nut is turned in a first direction corresponding to retraction of the latch bolt and to remain disengaged from the selector member when the latter is in its other position near the other nut.

Abstract: A safety door lock comprises follower member turned with an inside door knob or an outside door knob to move a latch bolt between the locking position and the unlocking position, and a clutch controlled by a push block between a first position where the outside door knob is coupled to the follower member and a second position where the outside door knob is disconnected from the follower member.

Abstract: An electric clutch system for a mortise-type security lock is provided. The clutch system includes one or more magnets disposed in one hub of a mortise-type lock. The magnet is recessed and disposed below the interior surface of the hub that engages the opposing hub of the mortise-type lock. The opposing hub includes one or more spring-biased armatures. Upon the application of current to the magnet, the armature is drawn toward the magnet resulting in a coupling-type connection between the two hubs so that rotation of the exterior handle will open the door.

Abstract: A door lock comprises: a spindle with projections; a bushing having grooves which mate with the projections of the spindle, and a key groove on one side thereof; an inside inner spindle with two fitting grooves, which is inserted into the spindle and rotates by an operation shaft of a key box; a locking spring which is inserted into the inside inner spindle; an inside outer spindle which is inserted, spaced a short distance from the inside inner spindle, having two guide apertures, a latch operation projection with an operation groove, and two fitting projections on its front end, which are fitted in the fitting grooves; a support washer which is inserted into the inside of the inside outer spindle; a spindle spring which is supported by the support washer; an operation disk with two guide projections which are inserted into the guide apertures of the inside outer spindle; and an operation key which is inserted into the key groove of the bushing so that its front end is inserted into the operation groove of t

Abstract: Opening of a motor vehicle door, having a door lock, is controlled by a system which includes: a door handle pivoted on the door for displacement between a rest position and an open position and connected to the door lock through a linkage; an intermediate lever which is pivoted about a pivot axis on the door and which is connected to the linkage; and a motorized mechanism interposed between the door handle and the intermediate lever. The motorized mechanism is arranged to assume, selectively, an inhibiting state in which manipulation of the door handle has no effect on the intermediate lever, and an operational state in which manipulation of the handle causes simultaneous displacement of the intermediate lever. When this mechanism is actuated to shift it from its inhibiting state to its operational state, the intermediate lever is displaced until the door lock is unlocked.

Abstract: A lever lock assembly includes an interior handle assembly, an exterior handle assembly, a latch assembly, and a controlling assembly. When in a latched position, rotation of an exterior lever of the exterior handle assembly is a free rotation, thereby avoiding forcible unlatching by burglars.

Abstract: A cylindrical lock is provided for use in a door containing a latch bolt supported for movement between an extended door-latching position and a retracted door-unlatching position. The door further includes a latch bolt retractor assembly connected to the latch bolt and movable relative to the door to move the latch bolt between the extended door-latching position and the retracted door-unlatching position. The cylindrical lock includes a hub, a door handle, a spindle, and a locking lug. The hub is adapted to mount in a fixed position on the door and is formed to include a first hub slot and a second hub slot communicating with the first hub slot. The door handle is mounted for rotation relative the hub. The spindle is coupled to the door handle and is formed to include a spindle slot defined by spaced-apart driving surfaces. The locking lug is movable between a first position fixing the spindle and hub together and a second position uncoupling the spindle and hub.

Abstract: A lock sub-assembly for a lock which is mainly situated at an exterior side of the lock. The lock sub-assembly comprises an exterior hub configured to rotate together with an exterior long handle and be fixed to an exterior side of a lock chassis, a handle spindle rotatably received within the exterior hub, a restricting block fixedly secured within the exterior hub, the restricting block disposed to. effectuate a limited turning movement of the handle spindle with respect to the exterior hub, an actuating spindle extending through both the restricting block and the handle spindle and having a roll-back portion adapted to operate a retractor, and a mechanism for releasably coupling the actuating spindle to the handle spindle. With this construction, when the actuating spindle and the handle spindle are not rotatably coupled together, the exterior long handle together with the handle spindle performs such a turning movement that no other constituting elements are affected thereby.

Abstract: A central locking system for motor vehicles has all of the opening and closing functions occurring in normal operation also in the event of failure of individual components. If necessary, a vehicle outfitted with this system can also be opened and locked when the door lock motors (50) are out of operation. When the vehicle is locked, the outer door handles (13) can be pulled without meeting resistance and without effect. To this end, a control cam (47) lifts an actuating arm (32) so that a door handle lever (35) can be actuated without the actuating arm (32) being grasped.

Abstract: An improved door lock is disclosed whereby the application of excessive force on the door handle will not cause a malfunction of the door lock and will not cause damage to the internal working features of the door lock. The door lock includes an outer rose spindle assembly, having an inner and an outer spindle, wherein the two spindle portions are releasably connected by a plurality of complementary pins and dints. Upon the application of excessive force on the door handle, the pins are released from the dints such that the force is not further transmitted to sequential features of the lock body.

Abstract: A door lock system includes a clutch mechanism for a lockset and has particular applicability in conjunction with lever handles. Two coupling assemblies are selectively rotatably coupled by a coupling pin. One coupling assembly is rotatably coupled to the lockset actuator. The other coupling assembly is rotatably coupled to the exterior door handle. A drive assembly includes a motor which selectively controls the position of the coupling pin to provide for the locking and unlocking functions.

Abstract: A handleset having a half round spindle for operating a latch assembly when rotated from a neutral orientation, a cylinder lock having a key operated cylinder assembly which rotates a round spindle, a driving pinion mounted for rotation on the round spindle, a rack having teeth engaged with the pinion, a connector displaceable between down and up positions, a pivotal thumb piece having a lever for displacing the connector from the down position to the up position, the connector having an arcuate slot, a locking arm having an arcuate flange for location in the arcuate slot, an axially extending pin, and a central opening, the round spindle including a cam secured thereto at a location selected so that the cam will be located within the opening, the cam and the opening being selectively configured so that turning the key from the neutral orientation to the lock open position will result in the cam rotating the locking arm from a first position whereat the arcuate flange is at one end of the arcuate slot to a se

Abstract: A handleset having a half round spindle for operating a latch assembly when rotated from a neutral orientation, a cylinder lock having a key operated cylinder assembly which rotates a round spindle, a half round driving pinion mounted for rotation on the round spindle, a rack having teeth engaged with the pinion, a connector displaceable between down and up positions, a pivotal thumb piece having a lever for displacing the connector from the down position to the up position, the connector having an arcuate slot, a locking arm having an arcuate flange for location in the arcuate slot, an axially extending pin, and a central opening, the round spindle including a cam secured thereto at a location selected so that the cam will be located within the opening, the cam and the opening being selectively configured so that turning the key from the neutral orientation to the lock open position will result in the cam rotating the locking arm from a first position whereat the arcuate flange is at one end of the arcuate s

Abstract: An outer handle of a door lock includes a tube extended inward of the door, a lock disposed in the tube, a stub fixed on one end of a shaft and having a square section and a circular section, a cylinder rotatably received in the tube and coupled to the lock and including two pairs of notches of different depth, a board engaged with either of the sections. The shaft can be rotated by the outer handle when the board is engaged with the square section of the stub and can not be rotated when the board is engaged with the circular section. The stub can be rotated by the shaft when the board is engaged with either of the sections.

Abstract: A door latch assembly 10 includes a rack 102 which is moved upon depression of a thumbpiece 12. Movement of the rack 102 results in rotation of an enmeshed pinion 136 and an assembled spindle 152. As the spindle 152 rotates, a latch 26 is moved from a latched position to an unlatched position to thereby permit opening of a door 20 on which the door latch assembly is mounted.When it is desired to lock the door 20, a key-operated lock cylinder 16 is operated to place into motion facilities for moving the rack 102 into a disabled poisition whereafter depression of the thumbpiece 12 will not result in movement of the rack.As the rack 102 is moved to the disabled position, teeth 104 of the rack remain enmeshed with teeth 138 of pinion 136. When the rack 102 is again moved to the enabled positon, the teeth 104 and 138 remain enmeshed and thereby avoid any deleterious reactions had they been separated upon disablement of the rack 102 and re-enmeshed upon enablement thereof.

Abstract: A drive element in this lock pushes a radially directed outward finger out of its longitudinal slot in the outer tubular spindle to disengage the outer handle from the latch so that the handle free-wheels. Spring means in the outer handle rose returns the handle to its normal horizontal position when the handle is released. The handle is preferably in lever form.

Abstract: An electronic dial combination lock has a spindle journalled within the lock for movement in two degrees of freedom, i.e., both rotational and axial displacement, to cause engagement of a push pin located on an internal cam wheel to engage one of a plurality of pressure-sensitive switches within the lock located in an evenly-spaced, circular pattern centered on the spindle's axis, each switch capable of making a discrete, unique electrical connection. Circuit means contained in the region sense the making of the electrical connections and detect when a given subset of connections has been made in a predetermined, sequential order corresponding to the lock's combination, to initiate an electrical signal within the region. The electrical signal may be used, e.g., to operate a solenoid to permit a conventional fence lever to engage the cam wheel such that a bolt within the lock may be withdrawn, such as in a safe door.

Abstract: A latch lock comprising a latch bolt adapted for movement between a latching and a retracted position, a first part including a boss adapted to be rotated by a door handle, and a second part adapted to move the latch bolt between these positions. A clutch is provided for transmitting rotation of the first part by the door handle to the second part to move the latch bolt to the retracted position when engaged and for freely rotating the first part by the door handle when disengaged. The clutch comprises a lever pivotally connected to the second part and the lever is provided with a spur which can be engaged by pivotal movement of the lever with a recess in the boss of the first part. The lever is biased toward engagement of the spur and recess and is operated to disengage the first and second parts by a locking device. In the locked configuration, the locking device can also operate to prevent movement of the latch bolt by abutment with the second part.

Abstract: A door lock in which the lock bolt is not retracted by direct action of the handles but is instead retracted by slide members acted upon by the handles, the slide members having means for engaging a further slide which carries the bolt. One of the engagement means includes an electromagnet and an engagement member. The engagement member engages the bolt carrying slide only when the electromagnet is energized, which occurs when an appropriate key has been inserted into the lock and verified.

Abstract: The doorlatch may have an exterior free knob rotation which is in the knob collar and is tied through cam means for non-engagement or engagement to drive the latch bolt. If the doorlatch has an exterior key operated lock, the cam means may be shifted by that lock for driving the latch. The cam means may also be shifted by an interior control, such as a turn button of an interior knob. Various combinations of exterior knobs with or without key locks and interior knobs may be provided, including the freely rotatable mechanism as desired. The front end loading may include a cylinder with plug assembly for the doorlatch which may have the plug rotated 180 degrees out of phase with the cylinder, the assembly then inserted and the plug rotated back to normal. A flange is provided beyond the lock cylinder on the plug which engages behind an inward depression for controlling the proper rotation during and after assembly.

Abstract: An exit device including a latch bolt and an action lever. The action lever includes a cam lever pivotably connected thereto and having a first portion engaging a locking member and a second portion engaging the latch bolt the cause the retraction thereof as the action lever is pivoted into its open position when a locking member is in an unlocked position. When the locking member is in the locked position, the first portion of the cam lever is free of engagement of the locking member and a second portion is free to cam about the latch bolt upon pivoting of the action lever into its open position whereby the latch bolt is not retracted.

Abstract: A rotary latch mechanism for engaging a latch post, for example to latch a vehicle door to its frame. The latch mechanism comprises a rotating cam having a recess to engage or release the latch post. A torsion spring or the like biases the cam for rotation toward the position in which it releases the latch post. A latch bar sliding perpendicular to the plane of rotation of the cam is biased for slidably engaging an abutment on the cam to latch the cam in its engaged position. A handle or other release is provided to retract the latch bar, freeing the cam for rotation to its disengaged position. The mechanism is quite simple and requires only a few moving parts, yet it provides the same functions as other more complex latch mechanisms.

Abstract: There is disclosed a knob control arrangement or system whereby the status of a knob associated with a lock mechanism can be controlled from exteriorly of the lock housing and can be selectively rendered active-operable or passive-inoperable. In this regard, when in the passive-inoperable condition, the knob will merely rotate relative to the housing without imparting force or stress to the lock components. This mode of operation is achieved by providing a knob hub rotatably mounted to the lock housing to which a knob member may be affixed. Interiorly of the housing, the knob hub will move relative to a main cam member used to effect operation of the lock mechanism. The knob control arrangement includes means for selectively interconnecting and disconnecting the knob hub and the main cam member, such that when connected, an active-operable condition is attained, and when disconnected, the passive-inoperable mode is achieved.

Abstract: A door lock has a flush-mountable body. A forwardly facing recess is defined by the body. A paddle-type handle is pivotally carried by the body and is movable between a nested position within the body recess and an operating position. A spring-projected slide bolt is carried on the back of the body and is movable between projected and retracted positions. A key-controlled disconnect linkage is provided for selectively connecting and disconnecting the handle and the bolt. The disconnect linkage includes a disconnect member which extends longitudinally along one side of the bolt and which has an end region that is shifted from side to side between connecting and disconnecting positions by a key-operated locking member. When the disconnect linkage drivingly connects the handle and the bolt, movement of the handle from its nested position to an operating position will cause corresponding retracting movement of the bolt.

Abstract: A door lock has a flush-mountable body. A forwardly facing recess is defined by the body. A paddle-type handle is pivotally carried by the body and is movable between a nested position within the body recess and an operating position. A spring-projected slide bolt is carried on the back of the body and is movable between projected and retracted positions. A key-controlled disconnect linkage is provided for selectively connecting and disconnecting the handle and the bolt. The disconnect linkage includes a mounting member which extends longitudinally along one side of the bolt and which is drivingly engaged by the handle. A disconnect member is supported on the mounting member and is arranged to be pivoted from side to side between connecting and disconnecting positions by the movement of a key-operated locking member.

Abstract: A door lock has a flush-mountable body. A forwardly facing recess is defined by the body. A paddle-type handle is pivotally carried by the body and is movable between a nested position within the body recess and an operating position. A bolt is carried on the back of the body and is movable between latching and unlatching positions. A key-controlled disconnect linkage is provided for selectively connecting and disconnecting the handle and the bolt. The disconnect linkage includes a disconnect member which is moved by a key-operated locking member between connecting and disconnecting positions located, respectively, in and out of the path of travel of a handle operating arm. When the disconnect linkage drivingly connects the handle and the bolt, movement of the handle from its nested position to an operating position will cause corresponding unlatching movement of the bolt.

Abstract: A door lock has a flush-mountable body. A forwardly facing recess is defined by the body. A paddle-type handle is pivotally carried by the body and is movable between a nested position within the body recess and an operating position. A spring-projected slide bolt is carried on the back of the body and is movable between projected and retracted positions. A key-controlled disconnect linkage is provided for selectively connecting and disconnecting the handle and the bolt. The linkage includes a disconnect member which is movably mounted on the bolt. The disconnect member is moved by a key-operated cam between connecting and disconnecting positions. When the disconnect linkage drivingly connects the handle and the bolt, movement of the handle from its nested position to an operating position will cause corresponding retracting movement of the bolt. When the disconnect linkage disconnects the handle from the bolt, movement of the handle is inoperative to cause retracting movement of the bolt.

Abstract: A door lock has a flush-mountable body. A forwardly facing recess is defined by the body. A paddle-type handle is pivotally carried by the body and is movable between a nested position within the body recess and an operating position. A spring-projected slide bolt is carried on the back of the body and is movable between projected and retracted positions. A key-controlled disconnect linkage is provided for selectively connecting and disconnecting the handle and the bolt. The disconnect linkage includes a disconnect member which is mounted for translatory movement along one side of the bolt to bring other disconnect components selectively into and out of driving engagement. A key-operated locking member moves the disconnect member between connecting and disconnecting positions. When the disconnect linkage drivingly connects the handle and the bolt, movement of the handle from its nested position to an operating position will cause corresponding retracting movement of the bolt.

Abstract: A door lock has a flush-mountable body. A forwardly facing recess is defined by the body. A paddle-type handle is pivotally carried by the body and is movable between a nested position within the body recess and an operating position. A spring-projected slide bolt is carried on the back of the body and is movable between projected and retracted positions. A key-controlled disconnect linkage is provided for selectively connecting and disconnecting the handle and the bolt. The disconnect linkage includes a rotatably-mounted disconnect member which extends longitudinally relative to the bolt. Interengageable formations are provided on the bolt and the disconnect member. The interengageable formations are brought into and out of driving engagement by the movement of a key-operated locking member. When the disconnect linkage drivingly connects the handle and the bolt, movement of the handle from its nested position to an operating position will cause corresponding retracting movement of the bolt.

Abstract: A door lock has a flush-mountable body. A forwardly facing recess is defined by the body. A push-button actuator for operating the lock is carried by the body and is movable between normal and operating positions. A bolt is carried on the back of the body and is movable between latching and unlatching positions. A key-controlled disconnect linkage is provided for selectively drivingly connecting and disconnecting the actuator and the bolt. The disconnect linkage includes a disconnect member which is moved by a key-operated locking member between connecting and disconnecting positions located, respectively, in and out of the path of travel of a latch bolt operating arm. When the disconnect linkage drivingly connects the actuator and the bolt, movement of the actuator from its normal position to an operating position will cause corresponding unlatching movement of the bolt.

Abstract: A door lock has a flush-mountable body. A forwardly facing recess is defined by the body. A paddle-type handle is pivotally carried by the body and is movable between a nested position within the body recess and an operating position. A spring-projected slide bolt is carried on the back of the body and is movable between projected and retracted positions. A key-controlled disconnect linkage is provided for selectively connecting and disconnecting the handle and the bolt. The disconnect linkage includes an operating member which is pivotally mounted on the body at a location behind the handle, a key-control which is carried on the handle, and a disconnect member which is carried by the key control for movement into and out of driving engagement with the operating member. The operating member has an arm which extends through an opening formed in the back of the body and into driving engagement with the bolt. A two-piece guard shields the members of the disconnect linkage from access by would-be intruders.

Abstract: A deadbolt lock mechanism of the single cylinder type is disclosed having a latch bolt which is movable between extended and retracted positions by means of a lock cylinder at one side thereof. A thumbturn, together with manually movable coupling control means for controlling the coupling between the thumbturn and latch bolt are located at the other side of the mechanism. In the bolt retracted position, the coupling control means is movable between coupling enabling and disabling positions to condition the coupling for operation of the latch bolt by the thumbturn in the enabling position thereof, and for disabling such latch bolt operation by the thumbturn in the disabling position. Consequently, the latch bolt is operable by the lock cylinder in any position of the thumbturn and coupling control means, whereas the thumbturn is enabled for operation of the latch bolt only when the coupling control means has been moved into enabling position.

Abstract: A paddle handle lock bolt includes a bellcrank retractor or trigger member which constitutes the central element of a three element drive train comprising a paddle handle, the bellcrank retractor, and a spring-loaded slide bolt. The bellcrank retractor can be selectively coupled to the paddle handle for selectively drivingly engaging the spring-loaded slide bolt in the retracting direction.

Abstract: The electronic combination door lock uses a push button keyboard in combination with a door provided with a dead bolt manually operable by an outer turning knob. The electronic circuitry for the keyboard compares an input code with a stored code and generates an enabling signal only if the input code is the same as the stored code. The outer turning knob is restrained from being manually moved to retract the dead bolt when the door is in its locked condition. This restraining of the outer knob is removed by the enabling signal which requires very little energy so that the dead bolt can then be manually retracted. Since the major portion of the work involved in unlocking the door is a manual operation, very little electrical energy is required for the keyboard and circuitry and a battery can thus be used to thereby eliminate complicated wiring to exterior power sources.

Abstract: A disengaging spindle locking mechanism for the latch bolt of a mortise type lock is actuated by the locking slide which is normally employed to engage a retractor hub to prevent the hub from being rotated. At the inner end of a split spindle where it is in non-rotatable engagement with the retractor hub there is a cam surface. On the inner end of a locking slide is a cam surface which cams the spindle out of engagement with the hub as hub action is blocked by the slide. Thereafter, should force be applied to the spindle, it will merely spin in place and no damage will be done to the lock mechanism such as might otherwise be done by unauthorized persons to force open the lock.

Abstract: A single cylinder deadbolt lock with a thumbturn includes a slidable pair of gear elements normally engaging the thumbturn with the cylinder whereby either one will operate the bolt. One such gear element is provided on a hub rotatable with the locking bar shaft, while the other gear element comprises part of the thumbturn mechanism. A rotatable sleeve coaxial with the locking bar shaft is also normally disposed in meshing engagement with the aforementioned hub but is restrained from axial movement. Axial movement together with rotation of the lock cylinder, e.g., for locking the mechanism, moves the hub and the sleeve out of meshing engagement, causing the hub and thumbturn to be held out of meshing engagement for disabling the thumbturn until the cylinder is again rotated.

Abstract: This electronic combination lock is operated by depressing the proper combination of pushbuttons mounted on the faceplate of a circular handle, then rotating the handle to open the bolt. The pushbuttons are held outwardly by radially extending spring wires within the handle that also provide electrical connection, when a pushbutton is depressed, to inclined contacts mounted to the rear of the faceplate. Electrical leads extend through a hollow shaft connected to the handle.The bolt is restrained in the locked position by a magnetically actuated locking pin which projects into a bore in the bolt. The shaft is connected to the bolt by a spring. When the proper pushbuttons are selected, electrical circuitry disclosed herein actuates the magnet, removing the pin and permitting the bolt to be opened by handle rotation. If the wrong combination is depressed, an alarm signal is produced, the magnet is not actuated, and rotation of the handle expands the spring without moving the bolt.

Abstract: A lock mechanism with disengageable knob whereby the locking of the mechanism decouples the exterior knob from the latch mechanism to allow the free rotation thereof without damage or detriment to the mechanism. The exterior knob is coupled to a cam member which actuates a spring loaded slide plate, which in turn may pick up a lock mechanism actuating member dependent upon whether the interior lock actuator is in the locked or unlocked position.

Abstract: A handle set door lock comprised of an outer assembly with a handle, a thumb piece actuator, a key operated cylinder, a latch bolt and operating mechanism, and a selective control member is disclosed. When the selective control member is in a first position, depression of the thumb piece actuator engages the operating mechanism causing the retraction of the latch bolt. When the selective control member is in a second position, the thumb piece actuator is disengaged from the operating mechanism permitting depression of the thumb piece actuator but without causing retraction of the latch bolt. The latch bolt can always be retracted by the conventional key operated cylinder located on the outer assembly when the selective control member located on the inner knob is in either the first or second position.