Abstract: A dual-function lock in accordance with the invention has an axis-defining lock sub-assembly including first and second axially aligned rotator members having confronting first end faces and oppositely facing second end faces. The sub-assembly has a lost-motion recess and an anchor recess on one confronting face and one recess-engaging member extending from another confronting face to permit lock function selection by placing the recess-engaging member into a particular recess. Alternative dual-function lock sub-assemblies include a unitary rotator bolt and a companion actuator. The rotator bolt has a release-mechanism-engaging portion and an actuator-engaging portion. While a first section of the actuator-engaging portion permits limited lost-motion between the rotator bolt and a companion actuator, a second section prevents lost-motion. The lock function can be selectively determined by placing the companion actuator into the desired first or second section of the actuator-engaging portion.

Abstract: A locking mechanism includes a lock mount (10) and a lock core (50). The lock mount (10) includes front and rear mount faces (15, 14) and an inner mount wall (17) which defines a core-receiving chamber (18) extending from the front mount face (15) to the rear mount face (14). The lock core (50) is slidably mounted within the core-receiving chamber (18) of the lock mount (10) and is movable between a projected position and a retracted position. The lock core (50) further includes a core body (52) and an outer core surface (49) defining a core boundary. The lock core (50) further includes a lock lug (75) coupled to the core body (52) and movable between a first lug position outside the core boundary and a second lug position within the core boundary and a travel limit stop (90) coupled to the core body (52) and movable between a first limit stop positioned outside the core boundary and a second limit stop positioned within the core boundary.

Abstract: A lock assembly includes a handle assembly including a tubular member having an axial hole defined in a first end thereof and extending along a longitudinal axis thereof and a receptacle defined in a second end thereof and in communication with the axial hole, and a handle formed on the second end of the tubular member. A lock core assembly is removably mounted to the receptacle of the handle assembly and includes a lock core therein. The lock core includes a key hole defined in a first end thereof. A transmission device is received in the axial hole of the tubular member and includes a first end and a second end. The second end of the transmission device includes an end face plate extending in a direction transverse to a longitudinal axis of the key driving means, and two spaced positioning rods project outwardly from the end face plate and extend away from the first end along a direction parallel to the longitudinal axis of the transmission device.

Abstract: A locking apparatus is provided that includes a unitary driver comprising a driving portion and a tenon portion. The driver is machined as a single part. A hollow housing is provided with an open end for receiving the driver. The tenon extends from the open end. The driving portion is rotatable in the housing between locked and unlocked positions. A channel is provided between opposing surfaces of the housing and the driver, within the interior of the housing. A retainer is received in transverse openings communicating with the channel. A number of retainer members may extend into the housing to engage the driving portion of the driver. A detent feature may be provided to identify discrete locked and unlocked positions. A locking latch is coupled to the tenon. A stop member is coupled to the housing. The stop member extends along the housing and engages the drawer to prevent removal of the housing from the drawer.

Abstract: The present invention relates to a detachable cylinder lock, which includes a case shell having an axial row of conic pin-holes for avoiding the pins falling out; a cylinder having a row of pinholes, in which a lower pin is located, corresponding to the pinholes of the case shell; the cylinder has an axial keyhole for a key inserting in, and a slant face (or a conic face) for the convenience of the cylinder inserting into the cylinder hole of the case shell; a follow block has a hole for the rear lug of the cylinder inserting in, and a cross hole penetrating through them for a fastening component screwing in or out.

Abstract: A motor-vehicle latch assembly has a door latch displaceable between a locked and unlocked position, a housing forming a seat, a lever pivoted on the housing, and a linkage connected between the lever and the door latch for displacement of the latch between its positions by the lever. A lock cylinder can fit in the seat and with the lever and interengaging formations on the lever, housing, and cylinder retain the lever in a predetermined angular position on the housing except when the cylinder is fitted in the seat. The housing is centered on an axis and has an elastically deformable and axially rearwardly projecting tongue having a radially inwardly directed ramp surface. The lever projects radially from the housing and is formed with a radially outwardly open notch receiving the tongue in a predetermined angular position of the lever on the housing.

Abstract: A free-wheeling lock assembly includes a free-wheeling lock mechanism which prevents damaging forces from being applied to the components of the lock assembly if the lock cylinder is forcibly rotated by a key other than the proper key or by some other instrument. A detent mechanism, which functions independent of spring bias, couples the sleeve to the case in the presence of the proper key in the keyway. A clutch mechanism couples the cylinder to the driver, but decouples the driver from the cylinder for an over-torque condition. The cylinder lock assembly further includes a locking mechanism which prevents operation of the latching mechanism of the lock assembly if the cylinder is slam-pulled from the case. The tumblers are isolated from rotary motion of the tumbler ward.

Abstract: A emergency trunk release apparatus of disclosed, comprised of comprising a lock bypass panel, located inside a trunk compartment. The lock bypass panel consists of an activation switch that is wired in parallel with a vehicle's electric trunk release such that its actuation will cause the trunk to open. The activation switch is a depression-type activation switch with an enlarged pad surface that allows it to be found easily in a dark trunk environment. The activation switch may be illuminated by any conventional means, so as to facilitate viewing in the darkness of the trunk. The present invention also includes a manual deactivation switch that takes the present invention temporarily out of service during times where cargo may accidentally activate the activation switch. It is envisioned that the present invention may be installed as a retrofit kit on existing automobiles or as original equipment on new vehicles.

Abstract: A motorized lock assembly includes a lock bolt mounted in a door and having a rotary core containing a first slot, an inside assembly having a casing attached to the inside of the door, and a transmission mechanism having a rectangular block rotated by a drive device, and an extension post containing a second slot aligning with the first slot, and an outside assembly attached to the outside of the door and having an elongate rotor in turn extending through the first slot and the second slot such that the rotary core rotates in conjunction with the extension post, whereby the rectangular block can be rotated so as to rotate the extension post and the rotary core, thereby extending a dead bolt outward from the lock bolt.

Abstract: A cylindrical "shell and plug" assembly has the plug rotatably received within the shell. The plug has a central rear shaft and an engagement portion thereon. The engagement portion has a pie-shaped stop member and a pie-shaped engagement member. A connecting member rotatably held within the shell has an inner engagement that can engage the pie-shaped engagement member and an operation key slot capable of receiving an end of an operation key. The plug can be rotated until the engagement member is positioned behind the flange to retain the plug with the connecting member, and the plus can be rotated so that the engagement member can be positioned away from the flange, thereby permitting the plug to become disengaged from the connecting member.

Abstract: Method and apparatus for non-destructively picking locks which normally are operated by keys, such locks capable of having twisting tumbler pins and sidebars. The method requires that: the pins be raised high in the keyway; the plug be axially bored by a thin drill which enters through a low portion of the keyway, the rear end of the drilled bore opening to the bolt cam operator; the drill bit be removed from the bore; and then the bolt cam operator be directly turned to shift open the bolt. This method does not decode the tumblers nor release any sidebar. The preferred apparatus comprises a pin raiser tool, which is self-retaining due to bias on the pins, which is transmitted to the handle of this tool; and a torquing tool, which is passed through the bore and has a blade which seats in the cam operator for turning the operator to shift open the lock bolt. A unique safety shield can be installed on the tailpiece to prevent picking by the method of this invention.

Abstract: A high security lock includes a housing defining an interior chamber having a longitudinal chamber axis and a keyway axially through the housing into the chamber. A cam arrangement within the chamber defines an access in axial alignment with the keyway. The cam arrangement includes a plurality of stationary raceway cams arranged in parallel planes and concentric to the chamber axis. Each raceway cam has a radially-inward surface forming a bearing raceway. The cam arrangement further includes at least one stationary locking cam arranged in a plane parallel to the raceway cams and concentric to the chamber axis. The locking cam has no such bearing raceway. A tumbler assembly is disposed within the chamber and cooperates with the cam arrangement for selective rotational movement within the access about the chamber axis. The tumbler assembly includes a plurality of bearing elements supported for axial movement relative to the cam arrangement.

Abstract: A lock includes a case having a shield, a locking member housing contained in a first chamber of the case and protected by the shield, a locking member contained in the locking member housing, a locking rod also contained in the first chamber of the case and moved by the locking member in locking and unlocking, and a deadbolt having a press portion and a rod portion with an annular groove for the end of the locking rod to engage in for locking. The locking member has a single or a double pin tumbler locking mechanism, or a disc tumbler locking mechanism.

Abstract: A lock mechanism structure includes a pair of latches with one end of each latch positioned against a spring and the other end of which are engaged with a rod. A block has a spring urging the block outwardly which in turn urges the latches outwardly to extend into a recess, whereas the other end of the block has a slope surface engaging with a corresponding slanting surface on a bulge extending upward from a rotating plate of a lock core, thus, when opening the lock, the lock core rotates to bring the bulge to push the block upwardly, whereas the other end of the block descends to urge the spring to retract, this allows the latch to detach from the recess and the lock is in a released status.

Abstract: To prevent a key cylinder from being punched out of an automotive door or the like and to simplify assembly, a stepped key cylinder retention cavity structure that is rigid with an outer panel of the door, is arranged to extend into the interior of the door. A key cylinder is disposed in the cavity from outside of the door so that a shaft that rotates synchronously with a rotor of the key cylinder, extends through an opening formed in an inboard end of the cavity and is connected to a key lever through a lost motion connection that allows for key backlash. The key lever is connected to the cavity structure by resilient barbed members that can be pressed in through the opening from the interior of the door. The barbed members snap into a locking position in suitable recesses formed in the structure. Rotation-limiting projections that are rigid with the structure are provided to limit the amount of rotation of the key lever.

Abstract: The invention concerns a lock cylinder with a cylinder core arranged rotatable in a housing and an overload coupling device, which consists of at least one radially slidable tang which is connected non-rotatable to the cylinder core, as well as of a control element cooperating with the tang in case of overload.

Abstract: A lock assembly is provided with a key-activated removable core structure. The lock assembly includes a housing having a first internal compartment disposed at a front end thereof, a second internal compartment disposed at a rear end thereof, and a partition with an aperture and a radial slot therethrough for segregating the first and second internal compartments. The removable core structure is selectively removably disposed within the first internal compartment of the housing and a cam actuation assembly is captively rotatably disposed within the second internal compartment of the housing. The removable core structure includes an exterior shell portion and a key-activated lock plug assembly with a distal driver portion rotatably disposed within the shell portion for rotation between distinct operating positions.

Abstract: A multi-use lock housing and cylinder includes a cylinder of a size and shape such as that typically used in key-in-knob locks. A two-part housing includes an outer housing portion and an inner housing portion, each having a bore and a slot into which the lock cylinder can be fitted. The housing and its associated lock cylinder can be used as a direct replacement for existing rim lock cylinders or mortise lock cylinders. The upper, front portion of the outer housing portion can be enlarged for added strength. The enlarged portion can be provided with a receptacle into which a piece of hardened metal is fitted. An extension having a pair of right-angled slots projects from the rear face of the cylinder and the inner housing. The slots receive driving members in the form of cams or tailpieces such as those commonly used with rim cylinders and mortise cylinders. Additional inner housings of different lengths can be provided for those applications that require mortise cylinders of different lengths.

Abstract: A lock for meter boxes and similar enclosures includes an outer case with a central bore mounted on an electric meter box. Inside the bore are two extrusions of unequal length spaced 90 degrees apart. A sleeve having a deep bore is held in the case by a screw, and a spring assembly transmits motion from the screw to the sleeve. The sleeve includes a flange at its end with an arcuate cutout portion which spans both extrusions. The sleeve further includes several internal grooves for retaining a barrel type lock which prevents access to the screw. A heavy cover plate is welded to the top of the sleeve so that it overlays and retains the door of the meter box. To unlock the meter box lock, the barrel lock is removed to allow access to the screw. As the screw is unscrewed, the sleeve moves with the screw until the flange on the sleeve clears the shorter extrusion. The sleeve then rotates with the screw until the flange engages the longer extrusion.

Abstract: In one preferred embodiment, an electronic lock, including: an enclosure; a barrel member rotatable between locked and unlocked positions; electronic circuitry disposed within the enclosure; the barrel member including communication apparatus in electrical engagement with key apparatus when the key apparatus is inserted in the barrel apparatus, the communication apparatus transmitting communication signals to and from the key apparatus and the electronic circuitry; first slidable contact apparatus attached to the electronic circuitry and slidable on the communication apparatus as the barrel apparatus rotates to transmit the communication signals to and from the communication apparatus and the electronic circuitry; and the first slidable contact apparatus further serving as part of sensor apparatus to detect the locked and unlocked status of the barrel member.

Abstract: a device allowing engagement of a conventional keyed deadbolt lock tumbler assembly without use of a key is provided. The device is assembled around the tumbler assembly and is fitted into a standard door lock cut-out. The device includes a rotatable ring extending substantially around the periphery of the device. At rest the rotatable ring is biased in an original starting position. Upon overcoming the bias, the rotatable ring is moved to a second engaging position in which the deadbolt is projected into an engaged position. Upon release of the rotatable ring the ring is biased back to the original position, while at the same time the deadbolt remains engaged. The biasing back of the device prevents the lock from binding or jamming.

Abstract: An electronic cylinder lock, including: a generally cylindrical housing having substantially open and closed ends; a barrel member coaxial with and rotatable within the generally cylindrical housing and having receiving apparatus defined at a first end thereof for the insertion into the receiving apparatus of key apparatus, engagement of the receiving apparatus and the key apparatus permitting the barrel member to be manually rotated; shaft apparatus coaxial with the generally cylindrical housing and extending through an opening defined through the substantially closed end, the shaft apparatus having a head end disposed within the generally cylindrical housing and a threaded end extending externally from the substantially closed end for the attachment to the threaded end of locking/unlocking apparatus; a bar at least partially disposed within the head end such that rotation of the bar causes rotation of the shaft apparatus, the bar being axially moveable within the generally cylindrical housing, and the bar b

Abstract: The invention is directed to a locking device with a locking cylinder which is formed of a cylinder guide and a cylinder core which is rotatably supported therein. When the key is withdrawn, the cylinder core is locked with the cylinder guide via spring-loaded tumblers. The cylinder guide is rotatably supported in the housing, but is fixed with respect to rotation therein via a catch when the key is rotated. When the key is inserted, the rotation of the cylinder core is transmitted, via a radially spring-loaded and radially displaceable radial slide, to a driver performing the locking functions in the lock. The catch has a push-rod by means of which the spring-loaded radial slide can be controlled so that the transmission of torque to the driver is interrupted when the locking cylinder is forcibly rotated.

Abstract: A lock assembly is provided which includes a shell having a front end, a rear end, and a central bore extending from the front end to the rear end. The lock assembly also includes a key operated plug axially aligned and rotatably and removably disposed within the central bore of the shell. The lock assembly further includes a cam module rotatably mounted on the rear end of the shell. A key is provided which is insertable into the plug and allows for the removal of the plug from the shell. When the key operated plug is removed from the shell, a tool can be inserted through the central bore in the shell and into the cam module for rotationally moving the cam module relative to the shell, thereby unlocking the lock assembly.

Abstract: A key cylinder device in which, in a locked state, a lock-releasing mechanism is provided so as not to operate even if a cylinder case swings. When a first lever rotates in a counterclockwise direction with respect to the cylinder case, a shaft provided on a second lever extends from a side surface of the second lever and engages with a third lever to move a rod attached to the third lever in a lock-releasing direction. Further, when the first lever does not move relatively with respect to the cylinder case, even if the cylinder case swings, the shaft does not extend from the side surface of the second lever and does not engage with the third lever. For this reason, there is no possibility that the rod attached to the third lever move in the lock-releasing direction.

Abstract: A free wheel lock cylinder includes a main rotor having a plurality of slits communicating with a key hole and a recessed portion communicating with both the slits and the key hole. Tumblers, having positioning notched portions formed on upper edge portions thereof, are slidably received in the slits of the main rotor. An engagement bar, having an underside engageable with the positioning notched portions of the tumblers, is received in the recessed portion of the main rotor and is biased toward the tumblers. A rear rotor is engageable with the main rotor through an interlocking device that is movable in response to operation of the engagement bar. When a proper key is inserted in the key hole of the main rotor, the engagement bar engages aligned positioning notched portions of the tumblers. The main rotor engages the rear rotor through the interlocking device moving in response to the operation of the engagement bar so that the rear rotor turns in response to rotation of the main rotor.

Abstract: A high security deadbolt assembly for a door which bolt has a housing extending from the edge of the door inwardly of the transverse bore between the door surface. A deadbolt is reciprocable in the housing and has a recess at its inner end. A cylindrical drive member is rotatively supported in the housing and is located with or is aligned with the deadbolt recess. The drive member carries a stop and is connected to the bolt by a linkage. When locked, a substantial portion of the length of the bolt remains engaged in the bolt housing and door so that attempts at forcing the bolt to the unlocked position are resisted by the stop which stop engages an internal surface of the bolt recess. The components are made from high strength materials and the deadbolt assembly may be retrofit to existing lock cylinders with a minimum of installation modifications.

Abstract: An ambidextrous vertical inverted handed cam lock for cabinet doors and drawers has a conventional pin tumbler cylinder and plug assembly. An arcuately movable bolt is journaled for rotation about a rearwardly extending portion of the plug. A conventional lazy cam drives the bolt. An arcuately repositionable bolt rotation limiter provides either left hand or right hand throws for the bolt while simultaneously allowing for inverted vertical use.

Abstract: A motor vehicle door lock or the like comprises a locking mechanism for securing and releasing the door, operated by a lock which is disengageable from the locking mechanism. The disengageable lock comprises a stator, a tubular intermediate sleeve, a rotor operable by a key, and a control lever for actuating the locking mechanism. The control lever is coupled to the rotor through a driving sleeve. The lock also includes an indexer which is moveable axially between a rest, or engaged, position and a disengaged position when the intermediate sleeve is rotated during actuation of the rotor by an incorrect key. This axial movement of the indexer displaces the driving member axially to a position in which the driving member is prevented from rotating. The indexer is fixed in rotation to the intermediate sleeve, and is also free to rotate with respect to the stator when in the disengaged position.

Abstract: A removable lock for selectively blocking an aperture in a plate-like member includes a stepped housing which receives a cylinder lock. A rotatable blade, operated by the cylinder lock, is spaced from a shoulder defined by the stopped housing to define a single slot for receiving the plate-like member in the unlocked state of the lock. Rotation of the blade to the locked position results in establishment of a pair of diametrically opposed plate-like member receiving slots.

Abstract: A pushbutton console latch is provided. The latch includes a cylindrical housing for housing a pushbutton therein. The pushbutton incorporates a lost motion feature such that when a pushbutton is in the locked position and depressed, the bolt of the latch remains extended. However, when the pushbutton is rotated to an unlocked position, a pushbutton may be depressed thereby retracting the bolt.

Abstract: A lock cylinder set to a lock has an outer cylinder serving as a housing. In the outer cylinder, a first inner cylinder into which an electronic key is inserted and a second inner cylinder connected to a locking/unlocking mechanism of the lock are rotatably set. A connecting pin is movably held by the first inner cylinder to connect the first inner cylinder with the second inner cylinder when the pin advances. A connecting pin control mechanism advances the connecting pin to mechanically hold the advance state of the pin when a proper key is inserted and retreats the connecting pin when the key is extracted. The connecting pin control mechanism has a cam plate contacting the protrusion of the connecting pin. The connecting pin retreats when the cam plate tilts and advances when the cam member rises.

Abstract: A pin tumbler lock has a rotary plug with three rows of tumbler pin mounting holes to accommodate a large number of tumblers. Rotational control of the plug is by means of a stop plate carried on a stem which is an integral extension of the plug. The lock cylinder has a rearwardly extending tab having its opposite side edges in registration with stop surfaces on the stop plate to limit the plug motion in two directions. The lock may be shortened by such provision of exterior rotational control to provide a shortened locking dimension and/or to accommodate a substantial number of pins and tumblers.

Abstract: A lead-in device is used during installation of a rim-type lock cylinder having a tailpiece in an exit mechanism including a cam having a tailpiece receiving aperture. The lead-in device includes a converging tunnel having an exit aperture sized to match the tailpiece receiving aperture and an entrance aperture that is larger than the exit aperture. The lead-in device also includes a pair of arms positioned to be inserted into the cam aperture to hold the exit aperture in registry with the cam aperture and to maintain the entrance aperture at a predetermined distance from the cam. When the arms are positioned in the cam aperture and the exit aperture is in registry with the cam aperture, the converging tunnel guides a tailpiece inserted into the entrance aperture through the exit aperture and into the cam aperture to engage the cam.

Abstract: A lock having a body with a central axis, an actuator, first structure cooperating between the body and actuator for mounting the actuator for movement relative to the body between first and second positions, a mounting plate defining a surface facing axially of the body to confront a wall on which the lock is mounted, second structure cooperating between the mounting plate and at least one of the body and actuator for a) maintaining the mounting plate in operative relationship with the body and b) allowing the mounting plate to be moved selectively axially relative to the body, and third structure cooperating between the mounting plate and at least one of the body and actuator for fixing the mounting plate in a plurality of different operative positions relative to the body.

Abstract: The cylinder lock according to the present invention comprises a latch 19 movably disposed between the joint position connecting the key cylinder 16 and a driver 18 and the release position disengaging the key cylinder 16 and a driver 18; and a clutch 20 for transferring the latch 19 to the release position when a sleeve 13 rotates relatively to a housing 11 with an improper key. When a proper key is inserted into the key cylinder 16, it can be rotated without rotation of the sleeve 13 so that the driver 18 can be rotated to the locked or unlocked position through the latch 19 which drivingly connects the key cylinder 16 and the driver 18. When an improper key is inserted into the key cylinder 16 and rotated, the sleeve 13 is rotated with the key cylinder 16 through tumblers 17 so that radial movement of the clutch 20 disengages the latch 19 and driver 18, thereby preventing unauthorized unlocking of the cylinder lock 10 without rotation of the driver 18.

Abstract: A latch handle (20) includes a grip portion (22) and a housing portion (24) with a spindle (28) extending therefrom to actuate a latch. The handle (20) rotates about an escutcheon (26) and is configured for receiving two or more padlocks. The handle grip portion (22) includes a padlock receiving portion (32) while the escutcheon (26) has a raised portion (34) aligning with the lock receiving portion (32). The escutcheon (26) takes on a second embodiment (126) for rotation in an opposite direction. A defeater device (30) includes a retainer (40) coupled to a plunger member (50). The plunger member (50) slides axially within a bore (70) and rotates relative to an insert (60). The insert includes a cammed surface (62) which receives tabs (52) of the plunger member (50). The plunger member (50) is biased by compression spring (48) and torsion spring (56) to urge the tabs (52) against the cammed surface (62) so that the plunger member (50) moves axially as the retainer (40) is rotated.

Abstract: A lock mechanism has a cylindrical housing with an axial bore therethrough, and a key-controlled core rotatable within the bore between locked and unlocked conditions and removable from and installable in the bore in the unlocked condition. The core has a plug at its rear end which is mateably engageable in a socket on the front face of a shifter, for rotating the shifter within the bore in response to rotation of the core, and thereby operating a latch member coupled to the shifter. A radial tab on the housing is receivable in an arcuate groove formed in the outer surface of the shifter for limiting rotation of the shifter to facilitate retention of the shifter in the single rotational orientation upon removal of the core from the housing. An O-ring on the shifter frictionally inhibits rotation thereof.

Abstract: A cylinder shaft projects from a key cylinder along the center line of a sleeve, and first and second case shafts project from a case. A spring is coiled on the first case shaft, and the cylinder shaft is placed between the first and second case shafts. The cylinder shaft and the second case shaft are placed between both legs of the spring. When the key cylinder is rotated with respect to the sleeve by the proper key being inserted in the key cylinder, the spring imparts returning force to the cylinder shaft that is making an arcuate movement in a circular-arc groove formed in the case.

Abstract: A lock, particularly well suited for installation in the T-handle of a vending machine or the like, which acts as a spring latch during opening and as a deadbolt in the locked position. The lock has a cylinder with a rotatable plug supporting a drive pin, the drive pin being parallel to and offset from the axis of plug rotation. The drive pin engages a ramped guide groove in a spring biased bolt, the guide groove being configured to return the drive pin to a position where it is in registration with, but displaced from, its starting position after a complete rotation of the plug.

Abstract: An essentially pickproof padlock has a housing defining an interior chamber and a keyway with a stacked parallel arrangement of multiple annular cam rings fixed concentrically within the housing. The radially inward annular surface of each cam ring is formed with a respective raceway of a predetermined annular extent and disposition relative to the chamber. A tumbler assembly is disposed within the cam arrangement for selective relative rotational movement. The tumbler assembly has a plurality of slidable pins each with a head portion forming a bearing element. An associated key is formed with a plurality of parallel axial recesses for receiving the pins of the tumbler assembly, each recess being of a selected respective length terminating at a shoulder to collectively engage and move the head portions of the pins into respective operative dispositions within corresponding ones of the raceways wherein the tumbler assembly may be rotated by the key between locked and unlocked dispositions.

Abstract: When a key other than a regular key or the like is inserted to forcibly rotate a key rotor, a coupling member is moved in a direction indicated by an arrow by an uncoupling mechanism. This movement uncouples a rear rotor from the coupling member. As a result, the key rotor and a sleeve only rotate idly, and the rear rotor and a lock lever are not rotated. Hence, a cylinder lock is not unlocked, and no damaging force is never applied to components of the cylinder lock such as tumblers.

Abstract: In a door locking system of the type having a security mechanism for locking a locking button when a lock cylinder is locked, a switch lever is installed on a lock cylinder main body for rotation therewith, and an operating force transmitting lever is rotatably installed on the lock cylinder main body and operatively connected to the locking button. The switch lever and the operating force transmitting lever are connected in such a manner as to allow, when the lock cylinder main body is rotated from a locking position to a security mechanism unlocking position, the switch lever to rotate relative to the operating force transmitting lever. When the switch lever is rotated into the security mechanism unlocking position, the security mechanism is electrically or electromagnetically actuated to unlock the locking button.

Abstract: A standard "diamond back" lock configuration, as used in drawer locks, includes a dead bolt with an angled slot. The angled slot provides an improved camming action which produces the same amount of linear dead bolt motion with 90.degree. of lock plug rotation as a conventional, non-angled slot with 180.degree. of rotation. In addition, since only 90.degree. of rotation is necessary to fully extend or retract the dead bolt, a user can ascertain whether the lock is engaged or not by the relative orientation of the keyway entry. Also, with 90.degree. of lock plug rotation, key retention at the unlocked position can be provided as an added feature of the lock.

Abstract: A lock mechanism having an engaging member, a sliding member, a fixed member, and a lock rod assembly received within an elongate lock rod housing is provided. The engaging member includes a planar head having a groove formed therein adapted to receive a protuberance extending axially from one end of the lock core. The engaging member also includes a shank portion extending axially from the head through which is formed a bore adapted to receive therein a spring member. The sliding member has an oval shaped axial through opening and a cam surface defined by an undulating annulus having depressed segments and protruding segments. The fixed member also includes an axial through opening and a cam surface defined by depressed segments and protruding segments. The two cam surfaces form a camming interface, whereby the shank of the engaging member is axially advanced and retracted into and out of locking engagement with the lock rod assembly by rotating the sliding member.

Abstract: A removable lock handle assembly comprises a door side casing, a disk-like drive member, an eccentric drive projection provided on the rear surface of the drive member, a driven projection provided on the front surface of the drive member, a removable lock handle having a driven projection to be engaged with the driven projection of the drive member for rotation thereof when the handle is inserted into the casing through a front handle insertion hole thereof, a coil spring fitted in an annular groove formed in a central part of the front surface of the drive member, a latch provided in the casing such as to be projected and retreated from and into the casing through a side hole formed therein, a shutter provided on the back side of the handle insertion hole for closing the hole, the drive member being inserted in the casing, the latch having a driven projection for engagement with the drive projection of the drive member, a return compression coil spring received in a blind hole formed in the latch on the sid

Abstract: A cylinder lock device (10) includes a lever (15) rotatably disposed between a casing (11) and a key cylinder (13), and a blocking member (17) disposed within a notch (16) formed in the lever (15). A concavity (18) are formed on an inner wall of the casing (11), and a chamfer (19) is formed on the key cylinder (13). When the lever (15) is in the locked position and the key cylinder (13) is further rotated to the dead-locked position over the locked position, the blocking member (17) moves away from the chamfer (19) of the key cylinder (13) and into the concavity (18) of the casing (11). When the key is pulled out from the key cylinder in the dead-locked position, the locking device is forcibly maintained in the locked position to prevent unauthorized unlocking.

Abstract: A pawl assembly is adapted for being mounted in an aperture formed in a door panel for releasably retaining the door against a corresponding frame. The pawl assembly includes as portions thereof a housing which is received within the door panel aperture. The housing is formed having its distal end being conical in shape which allows a mounting nut to be mounted onto the pawl assembly when received in the door panel aperture. A drive member is included which is received within an axial bore formed in the housing and is adapted for rotational movement by an operator. A pawl is secured to the drive member in only one orientation of the pawl in relation to the drive member. The drive member rotation is limited by a protruding member which extends from the housing and into the drive member. The drive member is also included with a flange which is sized at least to completely cover the top of housing which provides a seal for restricting the passage of water, dust and other matter.

Abstract: A padlock having a key-rotated cylinder with an end face juxtaposed with an end face of a pin rotatable in a padlock body to release a pair of balls held by the pin in notches in shanks of a shackle and wherein the end faces having entraining formations enabling rotation of the cylinder to rotate the pin. One end face has a pair of entrainer posts disposed diametrically opposite one another and offset from a center of a respective end face and reaching toward the other end face, the posts of one of the end faces being angularly offset from the posts of the other end face to define the angular play between them, and a bridge between the posts and disposed on the end face of the cylinder for taking up the play.

Abstract: A lock system for an article of furniture such as a cabinet or pedestal having one or more drawers or doors includes a lock bar movable between locked and unlocked positions responsive to an actuator and operating mechanism. The actuator and operating mechanism includes a lead screw which provides front-rear movement of a slider to which a toothed rack is mounted, in response to key operation of the lock mechanism by an operator. A toothed pinion is engaged with the toothed rack, and is rotatable in response to the front-rear movement of the rack. A pair of shafts are mounted to and rotatable with the pinion, extending between the pinion and a pair of levers mounted one on each side of the cabinet. Each lever is pivotably mounted, and includes an arm for lifting and lowering the lock bar in response to rotation of the shaft.