Abstract: A dual-unlock combination lock provides a first set of correct password and a second set of correct password to be used independently. After a password switch pushbutton is operated to drive a bracket to a corresponding position, a corresponding correct password is input into a combination wheel, so that an elastic member props the bracket to release from a transmission element in order to unlock the combination lock. One password element can achieve the effect of unlocking the lock by using two sets of correct password independently to provide a broader scope of applicability. The first set of correct password with the setting and use similar to those of a common password is provided for ordinary users, and the second set of correct password is a fixed code provided for designated users to unlock the combination lock by scanning an identification code by a mobile terminal.

Abstract: A method, computer system, and computer program product for authenticating a user is provided. The method includes the steps of receiving a user input via a pressure-sensitive input interface, the user input being indicative of a possible component part of an authentication code or pattern, determining a pressure applied to the pressure-sensitive input interface by the user when providing the user input, determining whether to ignore the user input as a component part of the authentication code or pattern based on the pressure applied and irrespective of the whether the user input is determined to be ignored, providing an input acknowledgement signal to an output interface for indicating the user input was received. An associated apparatus is also included.

Abstract: A lock driver for a lock, including a lock cylinder body, an actuation attachment portion and an adapter structure. The lock cylinder body has a front end, a back end opposite the front end and an outer surface. The lock cylinder is positionable and rotatable within a bushing. The actuation attachment portion extends from the front end of the lock cylinder body. The actuation attachment portion includes an attachment interface that is structurally configured for coupling to a user maniuplatable structure. The adapter structure is associated with the back end of the lock cylinder body. The adapter structure is structurally configured to interface with an existing lock structure.

Abstract: A digital access control system including an input mechanism which can be operated from an unprotected area and a barrier which opens in response to operation of the input mechanism, wherein an energy store for supplying the barrier with opening power and a communication line for communication with a remote unit in the secure area are provided and the energy store is in a form of a low voltage buffer store and, for supplying power to the low voltage buffer store, a low voltage communication line is provided which has an associated low voltage Power Over Ethernet unit or an associated unit from a similar standard.

Abstract: A dual locking device includes a first casing and a second casing. A receiving space is defined between the first casing and the second casing. The second casing has a through hole defined therein. An axial shaft passes through the through hole. A latch member is connected with the axial shaft. A locking mechanism and a key operated mechanism are received in the receiving space. The locking mechanism is connected with the axial shaft for driving the axial shaft. The key operated mechanism has a lock core disposed therein and having a key hole defined therein for being inserted and rotated by a key, such that the lock core drives the axial shaft. Accordingly, the locking mechanism and the key operated mechanism are separately operable to move the latch member between a locking position and an unlocking position.

Abstract: A door knob assembly having an access device operable to lock and unlock a door from a door frame. The door knob assembly device includes a spindle and the inner and outer knobs are operatively attached to the spindle. The spindle is operable to move a latching member between a first and second position so as to engage and disengage the door frame. The door knob assembly includes a locking member and a biasing member biasing the locking member so as to engage the rosette and fix the outer knob with respect to the rosette. The door knob assembly further includes an access device operable to receive a code. The access device includes a cam assembly operable to position the cam assembly between a first cam and a second cam position when the proper code is provided so as to fix and release the outer knob relative to the rosette.

Abstract: The main objective of the present invention is to provide a cam lock that allows the user to find the correct code when forgetting. The cam lock has an inner shell, an outer shell, a main core assembly, a secondary core assembly, a tongue and an identification assembly. A cover of the outer shell and the inner shell are secured to each other and are mounted rotatably with the rear casing of the outer shell. The main and secondary core assemblies are mounted in the inner shell. Either the main and secondary core assemblies is unlocked, the tongue is rotatable. The identification assembly cooperates with the secondary core assembly to find the code via unlocking the secondary core assembly. Therefore, the cam lock is convenient for use.

Abstract: A compound lock has a common housing, a latch assembly, a supplementary lock and a combination lock. The latch assembly is rotatably attached to and protrudes from the common housing. The combination lock and supplementary lock are mounted in the common housing and engage the latch assembly, and either may rotate the latch assembly. Thus, in general, people may unlock the compound lock using either the combination lock or the supplementary lock with a key when the combination is forgotten without breaking the compound lock.

Abstract: A handle mechanism for a portable computer having a base and a cover movably mounted to the base, includes a handle, two fixing assemblies, and a coded lock. The handle includes a crossbar, and two arms respectively protruding from opposite ends of the crossbar. A mortise hole is defined in one of the arms. The fixing assemblies are respectively configured for attaching the arms of the handle to the base. The coded lock is fixed to the base near one of the arms of the handle. The coded lock includes a tenon portion. The tenon portion is capable of extending into the mortise hole of the handle to lock the handle. The handle mechanism acts as both a handle and a lock for carrying and locking the portable computer.

Abstract: A dual-mode lock for a locker has a base, a knob, a key lock assembly, a housing and a combination lock assembly. The base is mounted through the locker. The knob is attached to the base. The key lock assembly is mounted in the knob, and has a lock core mounted rotatably through the base and having a latch for locking the locker. The housing is attached to the base and has a combination mount. The combination lock assembly is mounted in the combination mount to selectively lock or allow the lock core to rotate. Therefore, if a combination is forgotten or lost, the dual-mode lock may be opened quickly with a corresponding key and the combination reset reducing building management stress and preventing replacement costs.

Abstract: A figure wheel locking device includes a housing, a key locking mechanism, a pushing assembly, a plurality of figure-detecting members, and a figure locking mechanism. The key locking mechanism is sleeved in the housing. The pushing assembly is movably located in the housing. Each of the figure-detecting members has a first rotating member. The figure locking mechanism has a plurality of figure wheels, and each of the figure wheels has a second rotating member. The direction of the first rotating member is defined as a first rotating axis. The direction of the second rotating member is defined as a second rotating axis. The second rotating axis and the first rotating axis are interlaced to each other. The second rotating member drives the first rotating member. Thereby, the compound locking device having a key locking mechanism and a figure locking mechanism prevents the figure wheels from becoming axially disposed in serial.

Abstract: In the handle assembly, a combination lock (6) is disposed adjacent to a cylinder lock (13) in the handle (2). A locking plate (11) is interlocked with a rotor (8) of the lock (13), and it engages with a shoulder (15) of a receiver lever (16), which is a intermediate actuating member, so that the door handle (2) is held in its folded position. When the combination lock (6) is held in its unlocked condition and the handle (2) is pulled, the receiver lever (16) is swung upward by the locking plate (11) to release the handle (2) from the body (1). Each of the predetermined mark of each of the marked dial discs (4) for unlocking is detected by turning each of the marked dial discs (4) until the resetting member (72) is brought into engagement with each of the detecting grooves (71).

Abstract: A method is disclosed for obtaining altitude-related data along roads. A vehicle includes equipment capable of determining the current absolute positions of the vehicle as it is being driven. The vehicle also includes equipment capable of determining a distance traveled by the vehicle. Two points along a road are selected. Altitude-related data are determined as a function of the horizontal difference between the absolute positions of the two points and the distance traveled by the vehicle between the two points.

Abstract: Disclosed are a navigation apparatus and a method for calculating an optimum travel route thereof.

Abstract: A locking mechanism that allows a live bolt lock plate and a primary vertical lock plate to move relative to one another irrespective of the plates connection with a drive mechanism is provided. The drive mechanism includes first and second gears and is used to move the locking mechanism between locked and unlocked positions. The live bolt lock plate has a slot defined therein and is engaged with the first gear of the drive mechanism. The primary lock plate is engaged with the second gear of the drive mechanism and has a guide pin mounted thereon. The guide pin is positioned within the slot to slidingly couple the live bolt lock plate and the primary lock plate, in addition to their connection with the drive mechanism. A tumbler stack is associated with the primary lock plate for selectively allowing the primary locking plate to be moved to the unlocked position.

Abstract: Although a door locking handle assembly is small as a whole in thickness, it permits through a computerized personal management system of users a plurality of persons or users to have access to instruments contained in a box provided with the door locking handle assembly in an easy manner. In the assembly, a combination lock (19) opened by turning each of a set of it specially marked dial discs (21) a given number of times to establish a unique combination of marks of the dial discs (21) is incorporated in a door handle (13) or a base body (1) of the assembly. In operation, a locking member (44) of the assembly prevents the door handle (13) from being pulled out of the base body (1), and is driven to reach its unlocked position when the combination lock (19) is opened. Also, a cylinder lock (59) may be advantageously incorporated into the door handle (13) together with the combination lock (19).

Abstract: In the handle assembly, a combination lock (6) is opened by turning each dial discs (4) a given number of times to establish a combination of marks on the discs, and is incorporated in a handle (2) and disposed adjacent to a cylinder lock (13) in the handle. A receiver lever (16) pivoted on a base body (1), is controlled by a lock plate (5). A stopping plate (11), interlocked with a rotor (8) of the cylinder lock (13), engages receiver lever (16) pivoted to the base body (1), so that the handle (2) is held in its folded position. When the combination lock (6) is in its unlocked condition and the handle (2) is pulled, the receiver lever (16) is swung upward by the stopping plate (11) to release handle (2) from the base body (1). A plurality of slots (68) are formed on a bottom surface of a dent portion (100) of the handle (2).

Abstract: A locking arrangement for a switchgear cabinet, having a holding device, which contains a manual lever in a handle receptacle. The manual lever can be arrested in a locked position on the holding device by a displaceably seated bolt. For actuating the bolt, the holding device, which is in operative contact with the bolt, contains a lock in a lock housing. To make a locking arrangement accessible with little cost to a limited and definite group of people in connection with switchgear cabinets, the holding device contains a secondary lock which is also in operative connection with the bolt, or the secondary lock is in operative connection with a second bolt by a second actuating member, wherein the second bolt arrests the manual lever in a blocking position on the holding device.

Abstract: Although a door locking handle assembly is small as a whole in thickness, it permits through a computerized personal management system of users a plurality of persons or users to have access to instruments contained in a box provided with the door locking handle assembly in an easy manner. In the assembly, a combination lock (19) opened by turning each of a set of its specially marked dial discs (21) a given number of times to establish a unique combination of marks of the dial discs (21) is incorporated in a door handle (13) or a base body (1) of the assembly. In operation, a locking member (44) of the assembly prevents the door handle (13) from being pulled out of the base body (1), and is driven to reach its unlocked position when the combination lock (19) is opened.

Abstract: A locking arrangement for a switchgear cabinet, having a holding device, which contains a manual lever in a handle receptacle, wherein the manual lever can be arrested in a locked position on the holding device by means of a displaceably seated bolt. For actuating the bolt, the holding device, which is in operative contact with the bolt, contains a lock in a lock housing. In order to make such a locking arrangement accessible to a limited and definite group of people with little cost, wherein a conversion of the lock at a later time remains possible, the lock, a secondary lock, is designed as a number lock with adjustable number wheels. The secondary lock is inserted into a lock receptacle in the lock housing and is interchangeably fastened from the inside of the lock housing in fastening receivers, and the secondary lock has a control member acting on but is not connected with an actuating shoulder of the actuating member.

Abstract: A dual mechanism lock comprises a combination lock structure is disposed; a key lock having an internal cylinder and an external cylinder, and a fixing plate is embedded into a fixing groove on the external cylinder; the combination lock structure having a plurality of combination wheels pivotally coupled to the lock core rod connecting to the external cylinder; a spring is disposed between the other end of the lock core rod and the lock body; the internal cylinder is protruded from the panel and the panel is coupled to a knob; a sliding member is corresponsive to coupling and detachment of the inner groove of the external cylinder, and the lock core rod and the combination wheels control the coupling and detachment of the fixing plate and the external cylinder, or the key via the internal cylinder generates the movement for the coupling and detachment.

Abstract: Although a door locking handle assembly is small as a whole in thickness in construction, it permits, through its computerized personal management system, a large number of persons or users to have easily and quickly access to their instruments contained in a box provided with the door locking handle assembly. In this assembly, a combination lock (19), which is opened by turning each of a set of its specially marked dial discs (22) a given number of times to establish a unique combination of marks of the dial discs (22), is incorporated in a door handle (13) or in a base body (1). In operation, a locking member (24) of the assembly prevents the door handle (13) from being pulled out of the base body (1), and is driven to reach its unlocked position when the combination lock (19) is opened.

Abstract: Although a door locking handle assembly is small as a whole in thickness, it permits through a computerized personal management system of users a plurality of persons or users to have easily access to instruments contained in a box which is provided with the door locking handle assembly. In this assembly, a combination lock (19), which is opened by turning each of a set of its specially marked dial discs (21) a given number of times to establish a unique combination of marks of the dial discs (21), is incorporated in a door handle (13) or a base body (1) of the assembly. In operation, a locking member (44) of the assembly prevents the door handle (13) from being pulled out of the base body (1), and is driven to reach its unlocked position when the combination lock (19) is opened.

Abstract: A door locking handle assembly with two locks makes its locking function and appearance stricter. Keys of these locks may lock and unlock a door handle (15). The assembly may permit only one of the keys to unlock the handle (15), if necessary. The handle (15) is mounted on a door (B) and capable of extending from and entering a handle holder (10) mounted on the door (B). A first lock (30) and a second lock (40) are mounted on a free end of the handle (15) and the holder (10), respectively, and adjacent to each other, and are provided with a first movable locking element (32) and a second movable locking element (42), respectively. When these locking elements (32, 42) are engaged with each other, the handle (15) is locked. When they (32, 42) are disengaged, the handle (15) is unlocked.

Abstract: A dual mechanism lock; a combination lock structure is embedded into a external cylinder by a flexibly moving fixing plate; a combination wheel mechanism comprising a plurality of combination wheels and a latching wheel; the latching wheel can be embedded into the fixing plate; the other end of the fixing plate is coupled to an elastic member at the top portion in the lock body; the lock body is coupled to an external cylinder by the coupling base; an internal cylinder is sheathed into the external cylinder; the internal cylinder includes a lock core, such that the outer end of the external cylinder is a knob; a lock tongue is disposed at the inner end of the external cylinder; the key or the combination lock can produce coupling and detachment for the external cylinder through the lock core of the internal cylinder.

Abstract: The present invention relates to a lock used for the cabinets in public places, in which the number of lock can be reset when used to secure the items of users.

Abstract: A locking quick-release bike hub skewer for securely engaging an axle of a bike includes a security lock for preventing theft. A cam member is housed within a quick-release skewer housing and is completely restrained from rotation via a tri-tumbler locking apparatus. The cam member is arranged in a combination lock type design and, therefore, cannot be rotated. In dialing in a proper lock combination, a series of locking pins which would otherwise prevent rotation of the cam about the bike's axle are aligned such that the cam member is allowed to freely spin. A pivoting lever is also provided not only for aiding in compressing the cam member against the axle, but also for removing compression of the cam member against the axle which aids in the removal of the quick-release hub once a proper lock combination has been dialed.

Abstract: Closure (1) which is equipped with a combination lock (2) and, when a secret code is set correctly, can be opened, a catch member (21) of a first closure part (3), in a locking position, being positioned in a catch inlet opening (25) of a second closure part (4), from which opening the catch member having been moved out when it is in an open position. In addition, the catch member (21) can be lifted out of the catch inlet opening (25) by actuation of a lock cylinder (27).

Abstract: An electronic combination lock handle includes a rotatable spindle which interacts with two bolts to permit locking and release. The position of the handle relative the door indicates whether the combination lock is in a bolted position or unbolted position. A pistol grip handle permits rotation of the spindle when a bolt initiation mechanism which can include a solenoid armature is free of the spindle. An electronic keypad for the combination lock is mounted in the face of the pistol grip handle. The solenoid armature shaft interacts with a rotatable spindle to inhibit or permit rotation of the shaft.

Abstract: An automobile steering lock includes a body member, a housing and a lock means. The locking means is contained in a lock housing in the housing, and consists of a base, plural number buttons, a press button, an adjust plate, plural wheels, a control plate, a press plate, a coil spring and a deadbolt. When the number buttons are all rotated to the preset coded number for unlocking, the press button can be pressed inward to force the press plate together with the deadbolt to move down to the unlocking position to free the housing from the body member. Thus this lock needs no keys, and the coded number is adjustable by a user, preventing the lock from being pried open by thieves.

Abstract: A door bushing system includes bushings formed as part of a molded resin door jamb in an insulated steel shell safe door. The mold for the door jamb is designed to form as many bushings as are required and can also form stubs or sleeves for mounting other safe components. The bushings can support parts of such components as combination locks, key locks, and door handles. The combination lock and the handle have spindles whose opposite ends have identical configurations to facilitate assembly. The spindles are also made from resinous material to reduce heat transmission and to allow attachment by insert molding. Because the bushings are installed automatically with the door jamb, this door bushing system eliminates the need for separate installation of bushings after assembly of the door, ensuring proper alignment and reducing costs.

Abstract: A lock assembly includes a base member having a bottom with a peripheral wall extending from a periphery defining the bottom, two rods extending from the bottom and two openings defined through the peripheral wall. Each of the rods has a board and a disk respectively and rotatably mounted thereto which is accessed via the openings. Each of the boards has a protrusion extending therefrom which has two sides. A slide has a slot defined therethrough so as to slidably mount to the rods. A periphery defining the slot has two pairs of opposite sides, a width between each of the two opposite sides being smaller than a length of the protrusion and larger than a width between the two sides of the protrusion. The movement of the slide actuates a limit device disposed to the lock assembly.

Abstract: A tamper-resistant anti-theft device inhibits rotation of a vehicle steering wheel thus preventing theft of the vehicle and discouraging theft of the driver's side air bag.

Abstract: A combination lock device with latch bolt includes a combination lock, a rotary rod means, a faceplate, a securing seat, a turning means, a slide piece, a latch bolt and a housing. In order to unlock the combination lock, number dials are turned to a preset code number so that a lock hook disengages from a retain slot of the faceplate. The user may then turn the combination lock counter-clockwisely to cause the turning means to turn therewith, so that a connecting piece at a bottom side of the rotary rod means also rotate, causing a notch of the connecting piece to push a post of a turning piece to displace through 90 degrees. A slide piece is caused to displace forwardly as a result of the post pushing a slide slot, so that a movable pin on two U-shaped indentations of the slide piece displaces upwardly and then downwardly by means of a spring, causing the latch bolt to retract into the housing. Locking may be achieved by reverse operation.

Abstract: A holding down device including a headed screw rod, which is inserted through the device to be held down and then a nut is screwed thereon. A lever is pivoted to the head of the headed screw rod. The lever has a headed lock bar controlled by a combination lock arranged in the lever to prevent the lever from turning about the pivot when the numbers in the lock are incorrect.

Abstract: The numeral lock with changeable combinations includes a housing, handle members disposed on opposite sides of the housing, a slider member mounted in the housing, a plurality of adjustable dial members provided on the housing for changing the combination of the numeral lock, and a plurality of notches or numbers provided on the housing circumferentially spaced about the dial members. The adjustable dial members can be set to an unlocking position to open the numeral lock. A setting knob mounted on the housing can be pulled outwardly to change the positions of the adjustable dial members for changing the combination of the numeral lock.

Abstract: A pivoting handle type winder or door latch actuating handle (1, 2) and a pivoting stay type of window retaining latch (19, 20) for mounting on a movable frame of an openable door or window, and which is co-operable with a corresponding keeper on or in a surrounding fixed frame in order to latch the movable frame to the fixed frame. The latch comprises a latching element (23) which is movable into latching engagement with the keeper when the movable frame is in a closed position with respect to the surrounding fixed frame, and a locking mechanism is provided to lock the engagement of the latching element with the keeper. An elongate arm (1, 2; 19, 20) is coupled with the latching element, and at least two combinations wheels (9) are mounted on the elongate arm and arranged to control the operation of the locking mechanism so that the latch element can only be released from locking engagement with the keeper when a respective predetermined correct combination is set on each of the combination wheels.

Abstract: The present invention relates to a novel handle type combination lock for a suitcase, comprises a combination lock housed inside the handle of the suitcase, and the two broadside ends of the handle are provided with respective push buttons, when the combination lock is unlocked, the push buttons can be pushed to move, through this movement they drive respective sliding, plates to move for unlocking the fasteners located on the suitcase adjacent to the left and right side of the handle. The present invention utilizes one combination lock to control two fasteners and housing the combination lock inside the handle for the suitcase which simplifies the structure and reduces the production cost as well as provides good locking functions.

Abstract: A door handle is mounted on a door by bolts, the handle incorporates a combination lock comprising a shaft, a plurality of discs mounted coaxially on the shaft for individual rotation thereon, each disc having a first internal annual surface formed with a depression.The depression of at least one disc defining an abutment edge, a latch member mounted between the shaft and the annular surface and extending parallel to the shaft biasing means urging the latch member into engagement with the first annular surface, the discs being rotatable on the shaft without turning the shaft, except when all the depressions are aligned with the latch member, so that the latch member in its latched position extending into the depressions rotating in one direction of the disc or discs having an abutment surface causes the abutment surface to engage the latch member and turn the shaft. (FIG.

Abstract: The invention relates to a lock for the hand brake lever of a motor vehicle having a sleeve mounted on the hand brake lever, a release member movable therein to contact a pushbutton of the hand brake lever, and locking device capable of preventing movment of the release member in the locked condition. The inventive improvement is that the release member (4) is associated with a mechanism which arrests the unlocked condition of the locking device (8) after release of the hand brake and prevents shifting from this condition.

Abstract: This invention provides a lockable portable container, especially a suitcase, a board case, a file case or the like, having a grip movably attached thereto, which is characterized by a coupling means converting the grip movement into a release and/or opening movement of the container locking mechanism, which means is provided as a connection between the grip and the container locking mechanism, as well as by a release blocking and/or opening blocking device arresting the grip movement or neutralizing its transfer to the container locking mechanism.

Abstract: A lock system having a single direction closure comprising a permutation lock having a simplified mechanical arrangement for setting the combination for opening the closure. Upon actuation of the permutation lock, a protrusion therefrom releases a lever having a recess lock on a dog connected to the rotating spindle. The hub and spindle are severed to permit a single direction opening of the closure. The closure is reset by turning the combination knob on the permutation lock. The components are mechanically rugged and interrelated to provide the utmost in security; but yet, the minimum of inconvenience in opening.

Abstract: A hook device for double sliding doors includes a stationary hook fixed to one door of the sliding doors and a rotary hook operable to engage and disengage the stationary hook fixed to the other sliding door. A code lock for setting a lock-hold mode and a lock-release mode provides security even in case when the glass of the doors may be broken and a hand is inserted to reach the lock device in an attempt to unlock it.

Abstract: A locking device for preventing rotation of a vehicle steering wheel, comprises a base having two hooks that engage over spokes of a steering wheel to be locked. A pair of spring clips releasably secure the base to the steering column which supports the steering wheel to be locked. An extensible and retractable pin carried by the base has a lock for preventing unauthorized retraction of the pin. A clamp encircles the steering column, the clamp having an ear having a hole therethrough for receiving the pin when the pin is extended. The clamp has an adjusting screw manipulable to release the clamp; and the screw has a screw head so positioned relative to the ear of the clamp that when the extensible and retractable pin is extended through the ear, the screw head is masked by the pin to prevent release of the clamp.

Abstract: A combination lock has an array of combination elements that are each movable between first and second positions. Each element 25 has to be in a preselected one of the two positions for the lock to open, and the combination is entered by either moving or not moving each element from an intial or reset position. Then a reader 30 adjacent the elements 25 is simultaneously moved against all the elements to test their positions. Any element not in the proper position blocks the reader from movement; but if all the elements are in their preselected positions, they allow the reader to move and the lock to open. Combination elements 25 are preferably arranged concentrically around a spindle 15 having an external knob 16 that can rotate and move the spindle axially. Each of the elements 25 is preferably a slidable plate with an eccentric notch 26 that confronts and overlaps with a radial notch in reader 30.

Abstract: An electronic lock system senses codes on a key by means of opto-electronic, magnetic or other electrical means and compares the key code to a code stored internally in a memory. When the key code is equal to its respective stored code the lock activates an electrical clutch operated bolt, and may also change the internal code to a new code.This invention relates to electronic locks, and is more particularly directed to the provision of an electronic lock which can be operated by a key having a code in the form of an electric parameter or optical parameter thereon.

Abstract: Disclosed herein is a structure for an adjustable digital lock which is mainly characterized by its floating locking piece which controls rotation of a locking barrel, especially the one which can not be opened whenever the position of any lock ring is not proper or the opening method is not proper or when user can open the lock through listening to sounds; in which the number for such an adjustable digital lock can be easily changed by user.

Abstract: A door lock includes a number of code elements for controlling locking and having a clutch including three cams and three cam followers allowing opening when adjusted according to a prescribed code. The cams are balls embedded in a swash plate that wobbles on a bearing ball and are located at the corners of an equilateral triangle. When coded for opening, the three cam followers simultaneously contact the three cams to prevent wobbling and allow the followers to operate as drivers for the swash plate and a lock closing body.

Abstract: A permutation lock assembly incorporated into a door knob and latch mechanism mountable in the standard openings in conventional swinging doors, using conventional door latch hardware. Rotation of an outer dial in a first direction causes rotation of an inner dial which is visible through a window until a number on the inner dial appears at the center of the window. Upon rotation of the outer dial in an opposite direction until a number thereon is aligned with a center mark, the door is unlocked and may be readily opened. When the proper combination is known, the combination may be changed, within a few seconds, from one combination to another. Also incorporated is a clutch device in the external knob that permits the knob to turn in either direction when the door is locked and excessive force is applied, thus preventing damage to the assembly.