Abstract: A push-lock includes a body. The body is formed with a channel having a pair of portions. A cylinder is movable in the body between a front position and a rear position, and has a latch rotatably connected thereto. The latch defines two opposed cutouts in a periphery thereof. A clip has a pair of shanks resiliently flexible in the portions of the channel. The shanks normally abut the periphery of the latch. A spring is provided for moving the cylinder back to the front position. Additionally, the latch can be turned relative to the cylinder in such a manner that the shanks snapped in the cutout may be pushed outward by the turning latch till the shanks fully slide out of the cutouts and abut the periphery of the latch again.

Abstract: A locking mechanism having a housing with an aperture having at least one notch and providing access to a latching mechanism for a cylindrical lockset having a barrel section with an outwardly projecting tab which may be inserted through the aperture and to engage the latching mechanism being rotatable to engage the tab with the inner surface of the housing inhibiting removal of the lockset. A set screw mounted on the housing is incorporated to prevent rotation of the lockset by engaging a groove in the barrel section.

Abstract: A generally cylindrical body of a device such as a cam lock is provided with a snap-in mount that enables the body to be mounted from one side of and through mounting holes formed in support panels of distinctly different thicknesses. The body has a shoulder that faces in one direction toward one side of a support panel, and carries sets of movable arms that define engagement surfaces located at different distances from the shoulder that snap outwardly after being inserted through a panel mounting hole to face toward the opposite side of the support panel. The body can be mounted on panels having three different thicknesses if three sets of arms are provided that each define engagement surfaces located at a different distance from the shoulder. More panel thicknesses can be accommodated if one or more of the sets of arms define two or more sets of engagement surfaces each located at a distinctly different distance from the shoulder.

Abstract: The invention is directed to a device to protect a deadbolt assembly from tampering. A deadbolt assembly comprising a deadbolt reciprocable along a longitudinal axis, and a deadbolt actuating mechanism having an axis transverse to that of the deadbolt, is protected from intrusion and tampering by a pair of protective shells which encircle the actuating mechanism. The shells are generally cylindrical and of like structure and opposite orientation. Each shell comprises a ring and a circumferentially extending protective structure which extends axially toward the ring of the other shell. A preferred protective structure comprises a plurality of projections, including an arcuate tongue. A gap or opening in the protective structure permits actuation and movement of the deadbolt without interference with the shells.

Abstract: A lock mechanism includes a lock housing having an upper surface with a pair of opposing L-shaped ears, a lower surface with a pair of opposing L-shaped ears, and a front surface with an orifice therethrough. A lock plug cylinder has a face with a key slot therethrough, the lock plug cylinder received within the lock housing through the orifice in the front face. A mounting bracket has a front face with an orifice, a pair of laterally disposed flanges projecting from the front face, and a pair of retaining flanges projecting substantially perpendicularly from the front face. The lock housing is received between the retaining flanges in such a way as to have the retaining flanges received by respective upper and lower opposing ears.

Abstract: A method of fastening a lock cylinder body in a generally flat element comprises the steps of providing in the element (20) an opening (22) which is defined by at least first and second mutually convergent edges (24a, 24b), and providing in the body (10) first and second grooves (14a, 14b) that are intended for co-action with said edges. The body is then inserted into the opening (22) to a position in which the grooves are level with said edges, whereafter the body is moved in a direction parallel with the plane of the element into an engagement position in which the edges are in engagement with the grooves, therewith to lock the body in an axial direction in this engagement position. Finally, a tongue (26) integral with the flat element is bent to a position in which the tongue lies essentially in the plane of said flat element, so as to lock the body (10) against movement in directions parallel with the plane of the element (20) in said engagement position.

Abstract: A cylinder lock mounting device of the invention comprises: a panel 40 having a cylinder lock insert hole 42 and a cylinder lock mounting hole 41; a cylinder lock 20 provided with a engaging projection 25 and a mounting section 27 on an outer peripheral surface thereof; and an outer handle device 1 to be fixed on an outer surface of the panel 40 by a fastener 62 inserted through the mounting section 27 of the cylinder lock 20 and the cylinder lock mounting hole 41 of the panel 40 from an inside of the panel 40, wherein the engaging projection 25 of the cylinder lock 20 is engaged with a peripheral edge of the cylinder lock insert hole 42 on an outside of the panel 40 by inserting and rotating the cylinder lock 20 in the cylinder lock insert hole 42 of the panel 40.

Abstract: The device is intended for a door having an exterior door panel having a door aperture and an edge face extending perpendicular to the exterior door panel. According to the invention, the device comprises an intermediate mounting plate borne by a support plate between it and the exterior door panel, the support plate carrying connecting elements. The device further includes an outside opening control module for opening the door from outside the vehicle. The intermediate mounting plate and the outside opening control module have cooperating attachment components for securing the control module to the intermediate support plate and for securing and pre-positioning the connecting elements in order to provide a connection between the control module and a lock. The device is intended to optimize the process of assembling automobile doors.

Abstract: A push lock assembly having a housing with mounting elements for mounting the push lock to a mounting surface, a pawl carried on the housing, an actuating knob, a cam member and a lock plug which is carried in the actuating knob and associated with the cam member for rotation thereof, the mounting elements facilitating mounting of the push lock from single side of a panel.

Abstract: A cylinder lock includes a shell and a plug inside the shell. A locking pin, a sensor pin and a flexible coupling are mounted within the plug. The sensor pin moves the flexible coupling and the coupling moves the locking pin to an unlocked position when the correct key is inserted into a key slot in the plug. The key includes a locking pin receiving notch, to allow the locking pin to move to the unlocked position. The key also includes a contact surface that moves the sensor pin and thereby moves the locking pin to the unlocked position through the flexible coupling. When an incorrect key, without the locking pin receiving notch, is inserted, the flexibility of the flexible coupling allows the sensor pin to move without moving the locking pin. The cylinder lock may also include conventional pin tumblers.

Abstract: The invention is directed to a device to protect a deadbolt assembly from tampering. A deadbolt assembly comprising a deadbolt reciprocable along a longitudinal axis, and a deadbolt actuating mechanism having an axis transverse to that of the deadbolt, is protected from intrusion and tampering by a pair of protective shells which encircle the actuating mechanism. The shells are generally cylindrical and of like structure and opposite orientation. Each shell comprises a ring and a circumferentially extending protective structure which extends axially toward the ring of the other shell. A preferred protective structure comprises a plurality of projections, including an arcuate tongue. A gap or opening in the protective structure permits actuation and movement of the deadbolt without interference with the shells.

Abstract: The deadbolt thumbturn assembly of the present invention includes a thumbturn including a thumbturn extension, which is inserted through a bushing collar and rose bearing, then secured with a retaining ring such that the thumbturn extension is able to rotate within the bushing collar. The threaded bushing collar is then inserted through the aperture of the deadbolt rose and secured with a retaining ring forming a deadbolt thumbturn assembly such that the threaded bushing collar is able to rotate with respect to the deadbolt rose. The thumbturn assembly is then attached to the inside housing of a single cylinder deadbolt lock by fastening the bushing collar to the threaded boss of the inside housing such that the extension of the deadbolt actuator is inserted into a receptacle of the thumbturn. This design of the thumbturn assembly allows for attachment to the inside housing while still allowing rotation of the thumbturn to extend or retract the deadbolt.

Abstract: A lock mechanism for removably covering an opening in an object includes a face plate having a hole into which a sleeve having a fixed cam is fixedly mounted. A barrel is fixedly mounted in the sleeve, and a lock cylinder is removably received in the barrel. A rotating shaft extends from an end of the lock cylinder, and a rotating cam is mounted on the rotating shaft. A removable nut fastens the lock cylinder to the face plate. The lock mechanism is insertable in the opening of the object to removably cover the opening when the fixed cam and the rotating cam are aligned. When the shaft of the lock cylinder is rotated in one direction, the rotating cam rotates with it, so that the rotating cam is placed out of alignment with the fixed cam. This position is a locked position, at which position the lock mechanism is locked to the object so that the opening is inaccessible.

Abstract: A vehicular door lock operation system includes a base member fixed on an interior surface of a door outer panel, a handle rotatably supported on the base member and linked to a opening member of a door lock device, a door key cylinder supported by the base member and linked to a locking member of the door lock device, a connecting member which connects the handle and the opening member of the door lock device, and a supporting portion positioned close to the door key cylinder and supporting the connecting member. In such a vehicular door lock operation system, the assembly operation of the door lock device becomes more simplified than in the conventional vehicular door lock operation system.

Abstract: An integrated cabinet door and drawer handle and lock provides a front piece having apertures for receipt of a cabinet door or drawer lock and a human hand. Optionally, a wire pull handle can be provided. A backing plate having a transverse lip thereon is adapted for telescoping interaction with the front piece. A cabinet door or drawer having a portion cut out therefrom for receipt of the integrated handle and lock is clamped between the front piece and backing plate such as by screws. Multiple locks can be incorporated into the integrated structure.

Abstract: A vehicle lock assembly including a cylinder lock and a mounting bracket which is adapted to mount the cylinder lock on a vehicle structure associated with a deck lid of a vehicle. The mounting bracket includes a mounting lug adapted to be fastened to the vehicle structure and mounting arms which support the cylinder lock rearwardly of the exterior panel. The lock mounting arms define mounting surfaces which cooperate with indexing portions on the lock housing to substantially prevent rotation of the cylinder lock relative to the mounting bracket and the deck lid. In one embodiment, the lock housing is mounted on the mounting bracket in dovetail fashion to prevent the mounting arms from spreading apart if an attempt is made to forcibly rotate the cylinder lock.

Abstract: An assembly and method for installing a cylinder lock. The assembly includes a mounting member having a defined opening therein, and an adapter having an internal bore adapted to receive the cylinder lock therein. The adapter has a plurality of outwardly extending projections and the mounting member has latch members adapted to inter-engage the projections. For installation, the adapter is oriented in a first position and inserted into the opening of the mounting member, and then is rotated to engage the prongs and latch members.

Abstract: The disclosure concerns a vehicle steering column anti-theft device of the type including a casing in which a rotationally mounted lock rotor drives rotationally a rotary projecting part forming a cam that can cooperate with a bolt to control the movements of this bolt, said rotor being of the type in which its cylindrical front end section is engaged in a rear bore of said projecting part and in which said rotor and said projecting part are immobilized rotationally and axially relative to each other, wherein the means of axial immobilization of said projecting part relative to said rotor include a restraining part in the form of a spring clip carried by said projecting part including an elastically deformable section of which one active end projects radially inwards into said rear bore to engage a notch in the peripheral surface of said front end section of said rotor, and wherein, to enable automatic assembly of these parts, the rotor includes means for automatic engagement of said active end of said restra

Abstract: A push lock assembly having a housing with mounting elements for mounting the push lock to a mounting surface, a pawl carried on the housing, an actuating knob, a cam member and a lock plug which is carried in the actuating knob and associated with the cam member for rotation thereof, the mounting elements facilitating mounting of the push lock from single side of a panel.

Abstract: The door insert has a vertical rib that contacts an inside surface of a door edge. A continuous wall forming a latch control chamber is connected to the vertical rib by a bridge. A latch passage passes through the vertical rib, the bridge, the continuous wall and opens into the latch control chamber. Ribs on the outside surface of the continuous wall anchor the insert inside a steel door when the door is filled with foam. A deadbolt control chamber can be added if desired.

Abstract: A door assemble for vehicles includes a space defined between a door inner panel and a door trimming, in which a door locking device for holding a vehicle door on a vehicle body is accommodated so as to be secured on the door inner panel.

Abstract: An adjustable device for an auxiliary lock to be mounted on a door for security purpose, comprises an adaptor and a guard collar, wherein the adaptor comprises a first section with a smaller diameter, a second section with a larger diameter, a third section connecting the first and the second sections, a fourth section connecting to the third section; the guard collar has a first recess and a second recess to receive the fourth section, respectively, whereas if the fourth section matches into the first recess, the first section of the adaptor is available to the door with a smaller lock hole, and whereas the fourth section matches into the second recess, the second section of the adaptor is available to the door with a larger lock hole.

Abstract: A door lock for use with a door having a through bore and an intermediate transverse aperture connecting said bore with an edge of the door, into which through bore actuator portions of the lock are inserted, and through which transverse aperture a latch portion of the lock is inserted; the lock having an outer first portion insertable into an outer portion of the through bore, an inner second lock portion insertable into an inner portion of the through bore, the lock first portion having at its inner end a laterally extending slot to receive the latch portion in entered relation therein, the lock second portion having a threaded cylindrical portion at its inner end, the lock first portion having a threaded inner end portion to make threaded engagement with the lock second portion, enabling rapid mounting of a lock within a door.

Abstract: The invention relates to a mounting clip used to secure a lock housing within an opening in a storage compartment. The mounting clip is provided with an arcuate clamp to secure the clip to the housing. The clip may be mounted on the housing at a point outside of the compartment, prior to installation of the housing into the opening in the compartment wall. The housing may include a channel or other elements to firmly secure the clip against accidental displacement from the housing during installation or subsequent operation. The clip includes a spring like arm that may be compressed to abut closely against the housing during insertion into the wall of the compartment. After installation is complete, the spring like arm extends away from the housing. When the arm is extended, it presses firmly against the wall of the compartment to prevent removal of the lock housing from the compartment wall.

Abstract: The invention provides a lock assembly suitable for securing a swing door hinged to a refrigerated cabinet and is intended to dissuade pilfering. The lock assembly includes a strike plate having a mounting plate for mounting to the cabinet, and a locking plate spaced from the mounting plate. The lock assembly further includes a door bracket having an outer door plate to be located on an outer surface of the swing door, and a locking member mounted to the door bracket. The locking member has a locking shaft connected to the locking member for rotation with the locking member. The locking member is locatable between the mounting plate and locking plate of the strike plate and against the locking plate to lock the swing door to the cabinet in a first angular position of the locking shaft, and released from the locking plate to unlock the swing door in a second angular position of the locking shaft.

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 lock includes a face plate into which a lock cylinder is mounted. Extending from the rear side of the face plate is a frame for supporting the back of the lock cylinder. A cover plate covers the front of the lock cylinder and includes one or more arms extending through the face plate to the back thereof, where the arms are secured against the plate. By this arrangement, the cover plate is secured to the back of the face plate, preventing removal of the lock cylinder by prying. The frame secures the lock cylinder to the rear, preventing it from being dislodged by hammer blows. Against all such attacks, the full structural integrity of the face plate serves to keep the lock cylinder in place and the lock secure.

Abstract: A lock including a lock housing, a lock bolt rotatably mounted in the lock housing, an undulating end on the lock housing, a torque plate mounted on the lock bolt for rotation therewith, an undulating face on the torque plate, and a spring mounted on the lock bolt and biasing the torque plate into engagement with the undulating end of the lock housing with the undulating face of the torque plate in meshing engagement with the undulating end of the lock housing. A bracket is mounted on the lock housing, first wings on the bracket, and a key having second wings for engagement with the first wings when the lock is in an unlocked condition.

Abstract: An adjustable interconnected lockset adapted to be secured to a door which includes a mounting plate assembly having a vertically extending mounting plate having an operator bracket proximate the bottom thereof with the operator bracket having screw receiving holes. The lockset also has an exterior operator assembly including internally threaded posts, first screw holes extending through the mounting plate and screws which extend through the mounting plate and threadedly engaging with the threaded posts to clamp the door between the exterior operator assembly and the mounting plate assembly. The mounting plate has a central opening extending vertically upwardly from a location proximate the operator bracket and defining mounting plate side panels on either side thereof and the mounting plate assembly further has a dead bolt bracket which includes a central door engaging portion, a pair of opposed side portions adapted to engage the mounting plate side panels, and screw receiving holes.

Abstract: A security device for obscuring an opening defined by a frame (100) is provided comprising a door panel portion (1) forming at least a part of a door which, in use, is supported relative to the frame. The door panel portion has a front face and a rear face and an aperture provided therein, a lock retaining member (2) having a first lock receiving aperture (6) provided therein and a second lock receiving aperture (7) provided therein. Each lock receiving aperture is adapted to receive a lock and the lock retaining member is adapted to be secured to the rear face of the door panel portion in at least a first and a second position and in which first position the first and second lock receiving apertures are visible through the aperture in the door panel portion, and in the second position only one of the lock receiving apertures is visible through the aperture.

Abstract: A lock including a lock housing, a lock bolt rotatably mounted in the lock housing, an undulating end on the lock housing, a torque plate mounted on the lock bolt for rotation therewith, an undulating face on the torque plate, and a spring mounted on the lock bolt and biasing the torque plate into engagement with the undulating end of the lock housing with the undulating face of the torque plate in meshing engagement with the undulating end of the lock housing. A bracket is mounted on the lock housing, first wings on the bracket, and a key having second wings for engagement with the first wings when the lock is in an unlocked condition.

Abstract: A tamper-proof locking mechanism for a vehicular engine compartment, the compartment having a (a) hood closure member with a striker secured within the compartment to the hood; (b) a latch mechanism having a movable latch for catching and holding the striker when such striker is brought into a predetermined position relative to compartment; (c) a bracket secured or connected to the other closure member having (i) walls secured to the latch mechanism for fixing such mechanism in a desired spatial position for receiving the striker, (ii) a saddle with spaced walls defining a track closed at one end by the saddle; and (d) a lock having a housing provided with (i) a tumbler body slidable in and along the track and nestable on the saddle for being secured in an operative position, (ii) housing flanges at opposite regions of the body that overlap the edges of both of the spaced saddle walls, each flange contacting the edges of the side walls at one end of the body to ride thereon and fit flush thereagainst as well

Abstract: An outer open handle assembly for a vehicle door comprises a handle base secured to a door outer panel by means of a first fastener, an outer opening handle rotatably attached to the handle base, a cylindrical attaching portion integrally formed with a rear surface of the handle base, a door key cylinder inserted into the attaching portion, and a U-shaped retainer having a first leg part, a second leg part, a U-shaped engaging part. The attaching portion has a first slit, and the key cylinder has a second slit. The handle base has a supporting portion to which a tip end of the first leg part is rotatably attached by a second fastener, and a boss part with which the first fastener is engaged. The engaging part is engaged with the first and second slits to secure the key cylinder to the attaching portion when the retainer is rotated about the second fastener as a center. A tip end of the second leg part is supported on the first and second slits.

Abstract: An adapter device for a key-in-lever type lock having at least a mounting plate and an escutcheon includes a disk having a central hole defined therethrough so as to receive screw posts, and a split spindle extending from the mounting plate, the disk having a flange extending laterally from a periphery thereof so as to be engaged with a skirt portion of the escutcheon. The disk further has at least one slot and two holes respectively defined therethrough. Two mounting studs each have a threaded protrusion so as to respectively extend through the two holes and to be fixedly connected to the mounting plate.

Abstract: A door lock includes an external locking unit and an internal locking unit mounted on the door body of a door at outer and inner sides to hold a lock cylinder, and a locking bolt unit controlled by the external locking unit to lock/unlock the door, the internal locking unit having a circular base block fixedly fastened to the door body, a rotary cover rotatably mounted on the circular base block, a shaft forced by a spring member into engagement with the spindle of the lock cylinder, and a sliding knob mounted on the rotary cover and shifted between a first position wherein the rotary cover and the spindle of the lock cylinder are stopped from rotary motion, and a second position where the rotary cover and the spindle of the lock cylinder are allowed to be rotated between the locking position and the unlocking position.

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: An auxiliary lock includes a cylinder which includes a tailpiece projected from one end thereof, a cylinder housing firmly receiving the cylinder therein and including a hollow protrusion projected from a shoulder thereof, a trim rotatably receiving the cylinder housing therein, a ring defining an opening at a center thereof and including a first flange extending around the opening and a second flange formed around a periphery of the ring at an opposite surface from which the first flange projects. The disk-like hollow protrusion is received in the opening of the ring, with the shoulder of the cylinder housing being in contact with the ring and an end portion of the trim being rotatably received in the second flange of the ring. A first engagement plate is engaged to a second engagement plate which is installed with a knob. The knob is engaged to the tailpiece of the cylinder and is manually controllable to rotate the tailpiece, which in turns rotates the cylinder to unlock or lock the auxiliary lock.

Abstract: A tool for holding an exterior hub component of a dead bolt door lock within a cylinder bore extending between interior and exterior surfaces of a door includes first and second flat rigid plates elongated between proximal and distal extremities, and a securing mechanism interactive between both plates adjacent their proximal extremities. The distal extremity of the first plate is provided with an arcuate recess configured to embrace the cylinder bore. In use, the first plate is caused to lie flush against the interior surface of the door while the second plate rests atop the exterior hub positioned within the cylinder bore, and forces the hub toward the door.

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: The several unassembled parts of a door lock assembly, nested axially within one another, are secured by axial retainer means which engage an aperture in the door lock assembly that is not used to secure inner and outer door lock assemblies to one another.

Abstract: A motor vehicle steering column lock includes a drove rod element extending axially along a bore within the housing of the steering column lock for actuating a steering column locking bolt member in accordance with known steering column lock mechanisms. The drive rod element of the steering column lock is provided with a radial projection that cooperates with a radial wall of an enlarged recess of the bore extending through the lock housing for preventing axial withdrawal of the drive rod element from the housing and also includes an axial locking projection that is spring biased into a locking recess for preventing relative rotation between the drive rod element and the housing when the steering column lock is transported or stored without a lock cylinder installed in the housing.

Abstract: A fastening device used with a lock for firmly securing the lock in position against undesired rotational movement with respect to a door where the lock is mounted. The fastening device comprises a pair of mounting screws for firmly securing an inside and an outside escutcheon to the door and a pair of fastening screws extending through a main lock assembly to firmly support it with respect to the outside escutcheon of the already firmly secured inside and outside escutcheons assembly.

Abstract: A guard plate for use with a vehicle's lock in which a circular combination of plates are strengthened by a peripheral flange which contains a second plate bonded to the first. The first plate uses a shoulder portion and ridges to creates added durability while the second plate includes a plateau to provide further strength. A snap member is used to secure the entire assembly next to the skin of the vehicle and the snap member is preferably larger than the guard plate so that added security is provided. A seal is used between the guard plate and the automobile's door's skin to weather-proof the assembly to the vehicle's door.

Abstract: A multiple backset door lock assembly with a door lock assembly in which a bolt is coupled to a bolt extension saddle. The bolt extension saddle is provided with two contoured slots, each slot being engagable by a crank and pin assembly actuated either by a key or a thumbturn.

Abstract: An auxiliary lock comprises a latch assembly having an elongated casing to be received by a first horizontal bore extending into the end of the door. A cylinder mechanism is received by a second horizontal thru bore extending, from one face of the door to the other face of the door and intersecting the first bore. The cylinder mechanism includes a cylinder having a chimney, a cylindrical guard having an annular door engaging surface, an annular lip projecting inwardly from the annular door engaging surface to be received by the second thru bore, a cylindrical segment projecting inwardly from the annular lip, and a strut projecting radially upwardly from one circumferential end of the segment and defining therewith a shaped structure. The strut has a length selected so that the shaped structure lies proximate the bottom of the casing to thereby prevent the rotation of the said guard.

Abstract: This invention is directed to a door lock including a housing with a lock body which cannot be easily rotated when a burglar attempts to forcedly further rotate the outside lever handle in excess of a limit for withdrawl movement of a latching slide body. A pluality of ingagement portions which react counter to a rotary motion are formed in the housing of the lock body, and a plurality of fixed engagement rods engage with the engagement portions are assembled relative to an inside fixed plate extended into an inner side wall surface of the door.

Abstract: In a structure for mounting a steering lock apparatus having a key cylinder unit fixed to an instrument panel and a key lock unit for permitting or regulating rotation of a steering shaft whose tilting is freely changed, a key cylinder interposing unit through which an end of the key cylinder unit is interposed and supported is formed in a plate bracket fixed in the instrument panel side, protrusions projecting upward are provided in an end of the key cylinder unit and an engaging groove for regulating rotation of the key cylinder unit by engaging with both sides of the protrusions and functioning as a stress concentration part for a load applied upward from the key cylinder unit is formed in the key cylinder interposing part.

Abstract: A latch bolt operating device is adapted for use with a latch bolt unit that is installed in a door panel, and includes exterior and interior operating units. The exterior operating unit includes a key-operated plug-and-cylinder lock assembly, and an exterior housing having an outer annular cover, an inner annular cover and an annular shield. The outer annular cover has a rear end portion formed with a first annular shoulder. The inner annular cover is received in the outer annular cover and has a rear end portion formed with a second annular shoulder. The annular shield extends into the rear end portion of the inner annular cover and has a peripheral portion which engages the second annular shoulder when the latter is bent. The interior operating unit includes a torque bar and an interior housing. The torque bar can be positioned releasably in a first position corresponding to an extended position of a bolt of the latch bolt unit and a second position corresponding to a retracted position of the bolt.

Abstract: An auxiliary lock includes a dead bolt, an interior lock assembly and an exterior lock assembly respectively mounted on two sides of a door. Each of the interior lock assembly and the exterior lock assembly includes a housing, a positioning seat, a lock core seat, and a lock core. A pair of bolts is provided to secure the interior lock assembly and the exterior lock assembly together. A protective cover is mounted to an enlarged end face of the lock core seat of the inner lock assembly to shield bolt heads of the bolts.

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.