Abstract: A method for making a supporting body (1) for the lock of a motor vehicle, comprises the steps of: forming an intermediate element (8) made of electrically insulating material provided with conductive paths (3); setting the intermediate element (8) inside a mold (23) for forming the supporting body (1); and injecting electrically insulating material in the mold (23) for carrying out co-molding of the supporting body (1). The intermediate element (8) and the conductive paths (3) are made independently, and the conductive paths (3) are fixed on opposite faces (9, 10) of the intermediate element (8) by constraint means (15, 16) of a mechanical type.

Abstract: A device electronically tracks the use of a key to open or close a lockset and retain information of the key to allow a user to query the device and receive information with respect to the last recorded status. The device includes an actuating arrangement to allow tracking of the acceleration of the key during a locking or unlocking motion. These tracked signals are evaluated relative to at least two known signals indicative of a locking movement or an unlocking movement. The user is able to query the device at a later point in time and receive timing information of the present status and timing information between changes in status.

Abstract: A combination locking system has a combination lock comprising a plurality of sets of thematic component pictorial indicia imprinted upon a set of tumblers that when sequentially realigned form a series of gestalt composite images recognizable to a human operator. Only one of the composite images is the correct combination that unlocks the lock. A second embodiment of the combination locking system has a combination lock comprising a plurality of morphosyntactically conformational, paradigmatic semantic word string indicia that together form a myriad of grammatical and meaningful phrases, only one of which is the correct combination.

Abstract: Systems, methods, and apparatuses for a detacher for a security device are disclosed. The detacher (180c) includes a magnet (1820) that can be moved relative to a housing (1810) by a motor (1830). Magnet and motor are mounted inside the housing.

Abstract: A cylinder lock insert 10 has a manually operable knob 14 which is used to operate a lock bolt 6 of a rim lock 8 or the like. The knob 14 substantially encloses a lock input means 30 which is preferably a finger or thumb print recognition device. Correct user input causes a controller to engage a solenoid operated clutch 16 which in turn allows torque from the manual turning of knob 14 to be transmitted to the mechanism of the bolt 6. The lock may be rechargeable by means of a solar cell 34 and/or a knob operated dynamo (74 FIG. 4).

Abstract: A time limited restraint device. After a predetermined time, a cutter of the time limited restraint device cuts a restraint.

Abstract: A label printer comprising a cassette-receiving bay, said cassette-receiving bay having a base, a top opening opposite the base, and a locking mechanism extending from said base, said locking mechanism having a locking part, said locking part being movable in a first direction and biased in a second direction opposite to said first direction, said locking part having one or more projections such that a force thereon directed towards said base causes the locking part to move in the first direction and wherein said locking part is biased to move in said second direction when the force is removed.

Abstract: An electrically-operable strike for locking and unlocking doors. The strike is mounted on a face plate which in turn is mounted on a door jamb. The face plate is provided with mounting apertures which receive adjustment inserts each having an offset aperture for a mounting screw for mounting the strike on the face plate. The face plate also has a tongue extending distally from a lip and a break-off portion at the distal end of the tongue. The strike is first mounted with the offset apertures in a distal position. If the strike does not function properly due to preload, the strike is remounted with the offset apertures in a proximal position and the break-off portion is removed.

Abstract: A reset cradle with integral reset tool assembly, that automatically positions the lock cylinder, the reset tool assembly, and all associated components, and choreographs the operations that need to be performed in the right sequential order. The reset cradle generally comprises a two-section housing including a base section with centrally-protruding tubular post into which the lock cylinder may be inserted, and a separate hub section rotatably seated on the base. Inside the housing, a cam is engaged against the post and is rotatable thereabout along with relative rotation of the two-section housing. A reset member is also operative inside the housing, and is engaged by rotation of the cam for axial displacement into the lock cylinder. Similarly, a detent pin is slidably seated in the post and is engaged by the cam for axial displacement into the lock cylinder.

Abstract: The present invention relates to a device for actively threatening extrinsic destruction of a lock which is formed by a male member and a female member, wherein the device comprises a plurality of container units formed by rigid and brittle materials, such as plastic or glass materials and having a pressurized tear gas or toxic gas filled therein to form sealed structures that are inserted in a space in the female member or the male member, and several alarming marks or characters are marked on a surface of the lock. In such manner, when the lock is subjected to an extrinsic destruction, the deformation of the female member or the male member resulted from the extrinsic destruction will squash the sealed container units to instantly eject the pressurized tear gas or toxic gas out.

Abstract: A fire plate for receiving a bored in lock assembly and preventing passage of fire through a lock opening bored perpendicularly through a fire door. The fire plate is particularly adapted for use with integrated lock and latch assemblies that are designed for installation through a latch opening bored from an edge of the door into the lock opening. The latch opening has a diameter less than the lock opening and the fire plate blocks the space above and below the lock assembly in the lock opening to prevent the passage of smoke and fire through the lock opening. The fire plate includes two fire stop barriers that may be formed by bending from a sheet of spring steel and which preferably snap into engagement with the lock assembly as it is inserted from the latch opening into the lock opening.

Abstract: Disclosed is a hub locking apparatus for a mortise lock assembly, in which a motor is driven by an externally input electrical signal to control a locking member that binds a hub and is located to be automatically unlocked in case where the motor is destroyed by fire. In a mortise lock assembly including a hub rotating along with a rotary ring connected to a handle, opening a door by retracting and releasing a latch bolt from a door frame in accordance with rotation of the hub, a hub locking apparatus for the mortise lock assembly comprises a locking member preventing the hub from being rotated when one end is fitted into a groove of the hub and allowing rotation of the hub when the one end is released from the groove, a pivot member joined with the locking member to pivot the locking member, and a weight body rotating the locking member using its weight so that one end of the locking member is detached from the groove of the hub to freely rotate the hub.

Abstract: Theft-deterrent lock protector apparatus generally encloses and mechanically restricts access to locks which restrict access to receptacles, containers, and/or materials of value, thus providing a second level of security to such receptacles, containers, and/or materials. Such receptacles, containers, and materials include shipping containers, truck bodies, enclosed trailers, and hitch receptacles. Such locks include padlocks, shackle locks, U-locks, hasps, trailer latches, trailer clasps, trailer tongues, receiver hitches, and receiver pins. The locking enclosure apparatus restriction enables a user to secure various objects with such locks and lock protectors while mitigating deleterious and/or nefarious tool access to the locks themselves.

Abstract: A combined support and lock device (10) has a longitudinally extending support portion (20) and a longitudinally extending lock portion (50). The support portion (20) includes a centrally disposed strut (22) having a first end (24) and a second end (26). The first strut end (24) is adapted to rest against a member (8) of a boat trailer frame (6). The second strut end (26) is adapted to rest against a portion of a boat motor (12). The lock portion (50) includes a hook-like rod (60) having a first end (62) and a second end (66). The first end (62) of the rod (60) is curved (64) so as to engage a recess (18) defined within the rearward portion of the boat motor propeller (16). The rod (60) extends between two adjacent propeller blades (17) to prevent rotation of the propeller (16). The second end (66) of the rod (60) is lockable within a pivotable locking flange (52) the locking flange (52) being rotatably secured to the second strut end (26) of the support portion (20) of the device (10).

Abstract: The present invention relates to a weight-drop machine for calibrating and verifying the calibration of an occupant detection system in a vehicle. The machine comprises a lift frame that is adapted to support and lift a seat pallet toward a keeper plate to cause the pallet to engage the keeper plate so that the pallet is prevented from movement. Another weight-drop machine a weight supported for movement relative to a frame, which, in turn, is supported for movement in a direction having both a horizontal component and a vertical component of movement in a single motion. Yet another weight-drop machine comprises one or more sensors that are adapted to sense the position of a vehicle seat. Still another weight-drop machine comprises a sensor for measuring displacement of the drop weight. A towel bar lift may be provided for lifting a towel bar for operating a manual seat lock mechanism.

Abstract: A method and apparatus for the installation of interchangeable core lock caps that replace the prior art individual cap installation techniques with one that, with in a single highly repeatable operation, punches the caps for a plurality of pin chambers from a strip of appropriate metal and frictionally fits them into the plurality of pin chambers. The method and apparatus of the present invention reduce the possibility of misalignment of the caps with the pin chambers to virtually zero and eliminate entirely the need to handle the small caps. These advantages are achieved by: 1) placing a lock core having pin chambers in a fixture below a slanted die having apertures registered with the pin chambers; 2) placing a strip of metal in a fixed position over the die; and 3) through a mechanical plunger linked to a plurality of punches, driving the plurality of punches sequentially through the metal strip to form punched metal caps.

Abstract: A reminder device attachable to a key ring and engageable with a key shaft to prevent the utilization of the key and thus remind the user of a task to be performed. The device is designed from a single piece of clear flexible plastic, which can be repeatedly stretched. At one end of the clear flexible plastic is a tube (10). The tube (10) has a inner opening (12) and a outer opening (14). At the other end of the clear flexible plastic is a ring terminal (16), which has a hole (18) at the center. At the middle of the clear flexible plastic is a thin bridge (20), which connects tube (10) to the ring terminal (16). The ring terminal (16) attaches to the key ring and the tube (10) is selectively engageable with a key shaft of a key on the key ring.

Abstract: An all-in one tool usable by the locksmith in servicing of interchangeable core locks, for lock pin removal and decoding, and lock core repinning and recapping. The tool comprises a body having a central core receiving channel extending therethrough; a plurality of cylindrical bores extending through the body and perpendicularly intersecting the core receiving channel; and a receptacle receiving channel in the body located below and in communication with the core receiving channel; and a removable pin receiving receptacle slidably received in the receptacle receiving channel. The pin receiving receptacle has a plurality of pin receiving pockets extending perpendicularly from the core receiving channel of the body generally in alignment with the cylindrical bores. The pin receiving receptacle may take either of two forms: a hinged form that opens like a book to reveal the captured lock pins, or a solid block form that contains slots in which the captured pins are visible.

Abstract: The electric lock system operates to block access to the room when a guest key has been used and the guest is detected as being present in the room. The lock blocks access to hotel staff and provides the guest greater privacy in the room. The lock system employs an electronic lock in combination with a motion detector for detecting the presence of the guest in the room.

Abstract: A loader 30 and method of loading lock pins 104 and 112 into the plug portion 100 of a cylindrical lock. The loader 30 includes a body 32 and cover 34. The body 32 has a plurality of pin dispensing barrels 36 which are loaded with a preestablished plurality of lock pins 104 and 112. The body 32 fits under the plug portion 100 so that the pin dispensing barrels 36 abut and coaxially align with a corresponding plurality of pin cavities 102 in the plug portion 100, The combined body 32 and plug portion 100 are then turned upside down (rotated approximately 180') and gravity causes the lock pins 104 and 112 to vacate the pin dispensing barrels 36 and enter the pin cavities 102 in the plug portion 100.

Abstract: A remote control antifreeze device for a vehicle locking unit comprising a housing with an upper end having a bore centrally formed therein. A slot is formed between the bore and top surface thereof for allowing the bore to be situated about a conventional cylindrical locking unit. Also included is a helical heating element situated in a serpentine configuration within the housing adjacent to the locking unit and further secured thereto. A thin electrical insulator sheath is positioned about a surface thereof. The heating element is adapted to radiate heat energy upon the application of a voltage thereto. A control receiver switch is also situated within the housing. The control receiver switch comprises control circuitry coupled to a power source, a radio receiver element, and the heating element. The receiver control circuitry switch is adapted to allow the application of a voltage to the heating element upon the receipt of an actuation signal manually deployed by a portable transmitter unit.

Abstract: An electronic key and lock system, particularly useful for solenoid-operated locks employs a key that can operate electronically and mechanically. The key is mechanically polarized with its blade forming a first electrical contact and a separate second contact which is flush or raised relative to the blade. Each of the key and the cylinder employs respective light emitting and light receiving IR devices for communications between the electronics in the key and communications within the lock. The lock includes a solenoid-operated electronic cylinder.

Abstract: An electrical lock thawing device includes a housing formed from a water-proof rubber material and enclosing a rechargeable battery and an electrical heating element. A switch on the housing is operative to selectively connect the battery to the heating element and a removable elongated blade extends through a slot in an end wall of the housing. The blade is heated by the heating element and is insertable into a key slot of a frozen lock. An electrical plug on a rotatable cylindrical member is mounted for movement between extended and retracted positions with respect to the housing and serves to connect the rechargeable battery to a conventional AC outlet. A resilient detent member selectively actuated by a spring-biased push button is operative to secure the rotatable plug in a selected position. The removable thawing blade may be formed in a variety of different key configurations for use in various different locks. A spring ball detent is utilized to removably retain the blade within the housing.

Abstract: A circuit is provided for activating a heating element to deice a lock cylinder of a door system. A handle switch is coupled to a door handle of the door system and is constructed to provide a signal when the door handle is moved in an unlatching position. The handle switch provides the signal so long as the door handle is in the unlatching position. The activator circuit measures the time that the door handle is in the unlatching position and, after the door handle has been in the unlatching position for a predetermined time interval, begins to provide electrical energy to the heating element. The activator circuit measures the time period that electrical energy is provided to the heating element and, after a predetermined interval, discontinues providing electrical energy to the heating element.

Abstract: A device is disclosed for preventing freezing of locking cylinders, which includes a heat conductive body member with an incandescent bulb removably mounted within an open-top internal recess. A temperature activated switch provides power to illuminate the bulb and thus heat the locking cylinder when the temperature reaches a predetermined limit, such as 0.degree. C. (32.degree. F.). A heat conductive spring thermally connected at its ends to the body extends around the locking cylinder to hold the body member against an underside of the locking cylinder whereby radiant and convective heat from the lamp may pass through the open top recess to heat the cylinder.

Abstract: An automobile door lock warming device has a housing which surrounds the door lock cylinder on a conventional automobile door lock. A heating element is contained in the housing and also an electrical fan. A switch is mounted on the exterior of the automobile. In use, the user activates the switch which turns on the heating element and the fan, thus blowing warm air through the housing and onto the door lock cylinder. In a second embodiment, the housing includes a helical rib which swirls the warmed air around the door lock cylinder and exhausts the air through a plurality of ports which are spaced circumferentially around the keyhole. A pivotable cover for the keyhole and exhaust ports is provided.

Abstract: For an entry door, a doorknob lock set includes an elongated stem which extends through a transverse opening in the door and is rotatable about its longitudinal axis to actuate the door latch. Doorknobs are provided at both ends of the stem to rotate the stem; and the stem includes a key lock mechanism including a key slot at the outer end of the stem. To illuminate the key lock slot, the outer doorknob is replaced by a knob fabricated from a translucent material. The translucent knob is provided with a central bore to receive the outer end of the stem; and the knob is mounted on the stem to frame the key slot. The knob is provided with at least one cavity opening from the inner face of the knob and extending toward the outer face. An illuminating device such as an incandescent bulb is placed in that cavity. Electric conductors connected to the illuminating device extend out of the cavity for connection to a source of electric energy.

Abstract: A guard member for combination locks is provided which is situated under the actuating button to prevent it from being moved to the left or right to reset the combination until the guard member is removed.

Abstract: A device for use in thawing frozen car locks comprises a tube (10) of a heat insulating material having a plug support at one end; axial holes through the plug support; a flat, axially projecting plug (13) extending from the plug support designed to be inserted into and to essentially fill the keyhole of the lock; and a raised lip on the plug end formed with a plurality of through-going, radial cuts (15). When the projection is inserted into the keyhole in a frozen lock, and expiration air is blown into the other end of the tube, this air gives off its heat to the outer side of the lock before flowing through the openings without itself penetrating into the lock. The heat, on the other hand, is conducted into the lock and melts ice formed therein.

Abstract: This invention provides a means for permitting the deadbolt lock, as used on many residential outside doors, to be quickly and conveniently locked, either from the inside or outside, without requiring the use of a key. This device then requires that the deadbolt lock be opened from the outside by a key in the conventional manner, or from the inside by a conventional finger lever. But to prevent accidental lock out of the resident, this invention further embodies an audible reminder to the user to make sure that the key is in his possession and available for re-entry purposes.

Abstract: An improvement in a side bar wafer lock, specifically an improvement in the spring retainer of such a lock, and a method of using the spring retainer in the lock are provided. The improved spring retainer of the invention is provided with barbs on the legs thereof such that when the spring retainer is inserted into the slots of the plug of the wafer lock, the barbs bite into the relatively soft metal of the plug to prevent the dislodging of the spring retainer. The method of the invention comprises the steps of forcing the spring retainer into slots in the plug and causing the barbs on the spring retainer to bite into the relatively soft metal of the plug, as opposed to the prior art method of swaging the plug.

Abstract: A lock assembly of the type including a shell that receives a core having key-operated tumblers that coact with grooves in the shell. A plug having no tumblers replaces the core. The plug is insertable into the shell and pivotable about an axis within the shell and is retained within the shell.

Abstract: An antifreeze electric heating device for vehicle and housedoor lock cylinders includes an electrically non-conducting pressure body having two transverse wing pairs forming guide grooves for an elastic tension member e.g., rubber band, detachably secured to the pressure body and adapted to surround a lock cylinder for biasing a bearing side of the pressure body into heat exchange relationship with the lock cylinder. The pressure body includes a recess in which is lodged a PTC electric resistance heating element embedded in a heat-conductive, electrically insulative silicone-based compound. A U-shaped sheet metal strip electrically connected to one contact of the PTC heating element closes the recess and is arranged to contact the lock cylinder so that the electric circuit for the PTC heating element is completed by engagement of the metal strip with the lock cylinder under the biasing influence of the tension member.

Abstract: A cylinder lock including a rotor casing formed with a groove and an elongated through-opening, a rotor rotatably received in the rotor casing, tumblers which are respectively formed with projecting ends engageable with the groove and slidably fitted into the rotor, a tumbler blocking member slidably inserted into the elongated through-opening, a plunger and a plunger driving device. By the above arrangement, the cylinder lock can be positively unlocked either by using a key or without using the key and instead using the plunger driving device and driving the tumbler blocking member.

Abstract: A keeper device for a door lock which is composed of a channel form member having a web right angularly bent from the main web plane and a pair of flanges extending oppositely from the web and wherein an opening is provided in the reversely bent web portion to receive the bolt therethrough and wherein a block is provided which is sized to be received between the flanges of the channel and which is provided with a rectangular opening sized to receive an elliptical operator knob of the lock, so that when installed, the lock may not be opened from the outside or the inside unless the block is removed, and preferably, magnets are provided to keep the block in keeper relationship with the channel web.

Abstract: Safety devices are provided for use with combination locks of the type which permit the combination of the lock to be changed from the faceplate of the lock by manipulation of the same actuator which is employed for opening the lock. The safety devices include removable elements insertable into the lock and engageable with the actuator for preventing movement of the actuator to a combination-changing position, while permitting normal movement of the actuator required to open the lock.

Abstract: A lock for vehicle closures or flaps, especially doors, trunk lids and fuel tank caps or lids, wherein the cylinder of the lock includes a drain opening in the lower part thereof which communicates with the interior of the cylinder and through which moisture, especially water, can be drained from the interior of the lock. A drain line formed as a moisture absorbing wick provided with an electric heating element powered by the vehicle electric system is connected to the drain opening with the line being guided from the cylinder through an element, such as a door handle, containing the cylinder, to the interior of the closure. A water deflecting shield overlies the portion of the drain line within the closure. The drain line terminates in a vertically disposed drain section from which moisture drained from the cylinder can evaporate or drip off. The drain line may be operatively associated with a vacuum source on the vehicle to assist in drawing off moisture from the cylinder.

Abstract: The present invention relates to an electrically actuated lock of the type comprising a rotor pivoting in a body and capable of being locked in relation to the said body by locking members constituted by pairs of opposed pistons or by keepers. The locking members are displaced by notches of a key, coded to permit the rotation of the rotor by action upon the key head. In this invention the unlocking of the rotor is effected by electric means without any opening of the rotor to the external environment, thus ensuring perfect sealing and inviolability. The lock comprises a key shank provided with coded notches, the shank being connected in translation with the movable armature of an electro-magnet, the rotor being provided with a graspable head by means of which the user can rotate the rotor when unlocked by the key.

Abstract: The present invention is directed to a device for opening frozen locks on a motor vehicle, padlock or any locking mechanism which is subject to the elements. The device according to the present invention includes a key mounted on the closure lid of a cigarette lighter. In the inoperative position, the key is disposed against the front surface of the cigarette lighter, thereby forming a compact unit. In the operative position, the key is disposed directly above the flame of the cigarette lighter so as to maximize the heat of the flame in warming the key. In this manner, the key attached to the cigarette lighter, according to the present invention, is heated to a substantial extent, thereby readily enabling a frozen lock to be opened.

Abstract: A compact portable device energizable from a motor vehicle battery for thawing frozen motor vehicle door locks includes an electrically heated thawing stick sized for insertion into the keyhole of a frozen lock. The stick comprises a hollow metal body enclosing a resistance wire. One end of the wire is connected to the stip of the metal body and the other end is connected to an elongated cable terminating in a plug insertable into an electrical socket on the vehicle connected to the vehicle battery. The thawing stick is secured to a hollow protective case modeled in the form of a flat key end and provided with a key ring. The case has an open narrow side through which the cable can be inserted for storage within the case during non-use periods and the stick is pivoted for movement from a non-use position covering the open side of the case to an extended use position.

Abstract: The invention relates to a device for blocking the key passage of a lock. The device can be utilized as a supplemental security, permitting the use of the lock only after a specific condition has been satisfied to produce the retraction or moving aside of the blocking element. The device comprises a movable abutment which can occupy a first position in which it blocks the key passage and a second position in which it clears the passage, the movement from the first position to the second position being controlled by a thermo-deformable element.

Abstract: A battery operated portable thawing device for frozen locks has an electrically heated thawing stick sized for insertion into the key hole of a frozen lock. The stick is thinner than the lock key and comprises a hollow metal body inside which is located a thin resistance heating wire. The resistance wire is located between the middle and the end of the stick inserted into the keyhole in a relatively short length (20-30%) of the thawing stick. For use, the stick is slidable out of a protective housing adapted to be gripped in the hand. The housing carries a battery for energizing the stick and a light bulb for illuminating the keyhole. The metal body of the stick serves as one terminal for supplying current to the resistance wire. The circuit between the battery and resistance wire made automatically made when the stick is moved out of the housing for use and broken when the stick is returned into the housing.

Abstract: A device for mounting on the inside of doors employing a dead bolt lock to cause the lock to be opened from the outside with a key but only after turning the key to the right and to the left a given number of times. The advantage of this device is to provide a selected time delay in unlocking the door.

Abstract: A safety or "dead-bolt" lock includes a lockably releasable sliding bolt assembly of a first magnetic polarity. The keeper element, which is adapted to be mounted on to a jamb is of a second or opposite magnetic polarity to magnetically attract the bolt. A key lock assembly is used to release the sliding bar from movement. A cover is slidably movable over the entire lock assembly to prevent unauthorized dislodgement.

Abstract: A tamper preventing tumbler lock which provides an alarm signal or prevents lock activation when any electrically conductive object, such as a pick or the like, is inserted in the keyway. The lock includes a pair of electrically conductive tumblers which complete an electrical path to activate the alarm or to activate a solenoid operated latch to prevent rotation of the lock cylinder or actuate an associated lock bolt when the conductive tumblers are bridged by the conducting object in the keyway. The lock may be operated as a conventional tumbler lock by means of an electrically non-conductive key.

Abstract: A replacement housing and plug adapted to substitute a key-operated housing, plug and tumblers in an existing tumbler lock without extensive modification of an existing installation in a door, thereby reducing the possibility of mechanical picking of the tumblers which are thereby eliminated. The combination tumblers are disposed for rotation about an axis corresponding to the axis of the substituted plug, and a resiliently urged locking bar is positioned above the tumblers to drop into tumbler engaging position when the proper combination has been obtained, thereby interconnecting a dial member with a lock opening means for transmitted motion from the former to the latter.

Abstract: This apparatus simulates the appearance of an actual dead bolt lock. When installed, the simulated dead bolt lock discourages would-be vandals from attempting to break into homes or businesses. The simulated dead bolt lock is installed on a door and includes a collar fastened to the door so that the collar resists rotation when fastened. The collar has a back surface, beveled side surfaces and a front surface. A recess is formed in the front surface of the collar to receive a keyway insert. The keyway insert has a keyhole, and is permanently secured within the recess on the front surface of the collar.

Abstract: A door latch bolt locking device for use with a latch bolt having a transverse groove or kerf in its top surface and which will positively prevent the withdrawal of the latch bolt. The device comprises a slideable member adapted to be substantially flush with the intersecting edge surface of the door and the inner surface of the door. The slideable member will have a first portion which will be substantially flush with the inner surface of the door and an integral tongue portion at a right angle to the flat portion and adapted to be substantially flush with the edge surface of the door. The locking device is also provided with means for allowing the slideable member to be moved through a limited vertical distance in a substantially flush relationship with the door surfaces so that the tongue member can move into and out of the kerf provided in the latch bolt to thereby lock the door.

Abstract: A door handle lock assembly is provided for a door having opposite sides, the door being pivotally mounted in a frame and adapted to close the opening in the frame. A safety device is mounted on the door on the same side thereof as is a knob which controls a lock bolt which is adapted to be inserted into the frame to lock the door thereto. The safety device includes an elongated member which is pivotal on the door into positions of interference and non-interference with movement of the knob. The safety device is provided with two perpendicularly related flanges with a further flange which is adapted to abut against the knob when the knob is in a position of rest with the locking bolt extending outwardly into the door frame.

Abstract: A detector lock assembly comprising a cylinder body having a spaced apart front and rear end with a bore therein extending along an axis and a plug rotatable in the bore on the axis with means defining a keyway in the plug and adapted to receive therein a key of a defined length and configuration to permit rotation of the plug relative to said cylinder body. Detection means is operatively associated with the cylinder body at the rear end thereof so as to establish an electrical circuit when a key or other object is inserted within the keyway that has a length that is less or greater than the defined length for the key.