Abstract: There is provided a lock with a locking function of a bolt to be released by the inserting of a coded card scanned in the lock, and carried out by means of a key, in particular for use in safety deposit boxes or compartments of public swimming pools or the like with an outwardly open card insertion shaft on the casing of the lock. For the purpose of obtaining a lock design that is easy to use and that excludes operating errors and which is safely protected against misuse, a locking repeat barrier is utilized that is associated with the bolt and actuated by the locking movement of the bolt even with the card inserted in the lock.

Abstract: When a key is inserted into a key hole of a lock, magnetism creating means creates a magnetic flux corresponding to a predetermined magnetic code set in the key. Magnetism detecting means detects the magnetic flux and outputs a signal representing the detected magnetic flux. Decision means compares the signal value with a predetermined value, and outputs an agreement signal when the two values are the same. Driving means enables at least unlocking by key operation in response to the agreement signal. The magnetism detecting means outputs, as the above signal, a voltage corresponding to the magnitude of the detected magnetic flux or pulses having a frequency corresponding to same. At least one of material, dimensions, and thickness of the magnetic element determines the predetermined magnetic code. Further, an unlocking mechanism has a magnetic actuator which unlocks the lock by coupling the lock with unlocking means via a cam in response to the agreement signal.

Abstract: Magnetic key and barrel device wherein the magnets (8) of the key (1) cooperate by repulsion with magnets (25-225) embedded into bascule elements (21-221) movable between a locking position of the lock and an operating position wherein the bascule elements release the rotor-stator interface. The rod (7) of the key (1) is configured as a tube in the wall of which are embedded the magnets (8), and the rotor is configured as a sleeve (14) in the wall of which are arranged the bascule elements (21 and 221). The sleeve (14) has in its center a cylindrical ferrous core (17) which permanently attracts the magnets (25 and 225). The stator (3) which surrounds the rotor (2) is drilled with ports (26 and 226) wherein the magnet-free bascule (21 and 221) ends are sunk. Application to any locking and control lock.

Abstract: The electronic door lock for an electronic key provided with an electronic store for a key word datum has a latch bolt (5) actuatable at least from the inside of the door by means of a handle and a bolt (7) which is lockable and unlockable by an electric drive device (35). A control circuit (81) formed especially as micro-processor reads the key word datum stored in the key, through the reading device (77), and controls the electric drive (35) in dependence thereon. The reading device (77) includes sensor elements (93, 95), especially pieco-electric elements by way of which the drive direction of the electric drive (35) is selectable by a key movement of short stroke. In order that the electronic lock may be opened manually in case of emergency, a mechanical lock cylinder (113) is provided by means of which the bolt (7) is uncoupled from the drive connection to the electric drive (35) and is bringable into a drive connection to the handle nut (23) actuating the latch bolt (5 ).

Abstract: This invention pertains to a key operated mechanism for producing coded signal combinations for selecting a function of a multifunctional device. The mechanism includes a plurality of magnetically operated switches arranged along a key guide. The key includes magnets specifically positioned for interaction with the magnetically operated switches in accordance with a code diagram. Closing of the switches sends signals to a code signal user, which if the signals are enabling activates an associated machine such as a franking machine.

Abstract: A number of bearers concurrently use card-keys, having a common access code, and a unique lockout code to open a single lock. If a particular bearer is to be selectively locked out, the lockout code sensing device in the lock is changed to lockout the particular bearer but not all other bearers concurrently using their card keys to open the same lock.

Abstract: A key comprising an elongated body made of magnetic material and having a handle at one end. A pair of like magnetic poles are located in the elongated body at positions which are spaced apart angularly around the longitudinal axis of the body but are not spaced apart along the axis.

Abstract: A closure lock system comprising a lock assembly, a lock actuator for locking or unlocking the lock assembly and a lock circuit including a reed switch which when closed by a magnet of a key causes the lock actuator to lock the lock assembly.

Abstract: A rotatable magnetic tumbler apparatus for a magnetic lock comprises at least one rotatable magnetic tumbler, whose rotary orientation is adjustable by a magnetic key corresponding to a preselected magnetic code, and which is contactable by a contacting element of the lock. The rotatable magnetic tumbler is movable in the direction of the rotation axis of the tumbler, and the contacting element is suitably mounted in the magnetic lock for making contact with the rotatable magnetic tumbler in a predetermined position on the rotation axis.

Abstract: The invention relates to magnetizing apparatus for the magnetization with coded orientation of magnetic blades (6) to be embedded into two sides of a magnetic key shank forming part of a magnetic safety lock system, wherein tapering flux-conducting soft iron shanks (2, 4) are coupled to the poles of an exciting magnet (1) of the apparatus. Between the shanks is an air gap (3) into which a feeding mechanism feeds the blades (6) to be magnetized.The magnet is a permanent magnet (1) made of intermetallic compounds of rare earth metals of shell 4f with transition metals of shell 3d by means of powder metallurgy or casting. The areas of the soft iron (2) which are contiguous to the air gap (3) are made of a material of high saturation value. The direction of the feed of magnetic blades (6) is parallel with the direction of the magnetic field (dipole) of the poles of the flux-conducting soft iron (2).

Abstract: The lock housing has a slot in a top wall via which a coded card key can be inserted to bring into alignment coded magnetic areas on the card with magnetically responsive elements of the lock to unlock the locking mechanism and enable rotation of either a knob or lever arm to open the door. The card moves a spring actuator against a coupling spline to engage it with a spindle spline carried by a shaft interconnected with the knob or lever arm handle. The sliding coupling spline is integral with parts which interrelate with the door lock mechanism such that rotation of the knob or lever arm will now effect release of the door locking mechanism. When the card is fully inserted, the mechanism is maintained in the unlocked condition and the card may be released to turn the knob or handle with the same hand. Spring-loaded members separate the coupling and spindle splines as the magnetic card key is withdrawn from the housing slot.

Abstract: A waterproof key, particularly for locks of bath-house locker doors, which can be worn on the arm of a bathing guest, comprising a strip of material having an opening code. The material is sufficiently flexible to permit the strip to be bent to form an arm band of different diameter for encircling the arm of a wearer.

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

Abstract: For an electronically motivated door lock there is a key carrying magnetic coding for actuating an electronically triggered release mechanism to unlock a door. Insertion of the key in the keyway initially closes a switch to energize the electronic circuit. The electronic circuit is programmed to motivate a motor driven mechanism in successive stages to move a blocking finger into and out of engagement with a notch in a rotatable disc on a cylinder plug which operates the latch bolt. The motor rotates preferably in one direction but by use of a rotating drive pin shiftable from end to end of a transverse slot, the blocking finger is moved alternately into and out of engagement with the notch in response to the successive energizations of the motor.

Abstract: A lock for operation by a magnetic key has some locking elements which are moved circumferentially from locking to releasing positions by the key and further locking elements which are moved axially by the key from locking to releasing positions.

Abstract: A special type of key is made use of to actuate an electronically triggered release mechanism to unlock a door. To enable the electronic means to function, insertion of the key in the keyway initially closes a switch to energize the electronic circuit. Also when the key reaches the switch closing position, a read head for the electronic circuit, located adjacent the keyway, interprets magnetic coding carried by the key. The electronic circuit is programmed to motivate a motor driven mechanism to move a locking pin out of engagement with a latch bolt where the latch bolt has been acting to hold a door locked. Once the locking pin has been removed, the latch bolt is in fact withdrawn from its locked position by rotation of the key in a substantially normal fashion.

Abstract: In a magnetic locking system for locking a door to a fixed member, comprising a key cylinder connected to the door, a magnetic sensor connected to the door near the key and operating when sensing a predetermined magnetic force, control means for locking the door to the fixed member when the magnetic sensor operates, and a magnet-mounted key including a key cylinder proper which is to be engaged with the key cylinder and a key head which is equipped with an elongate magnet piece, there is proposed an arrangement in which when the key is operatively engaged with the key cylinder to turn same, an imaginary plane which the axis of the magnet piece describes when the key turns about the axis of the key cylinder intersects the axis of the magnetic sensor.

Abstract: Two control rings (29a, 29b) are arranged between the cylinder (2) and lock body (1) which are provided with latch grooves (9) receiving that part of the latch (8) which prevents cylinder (2) rotating. The rotor housing has a latch channel (11) formed along the chord of the magnetic body (5) in the rotor (6) and can receive the other part of the latch (8) in a state of magnetic equilibrium determined by the magnets in the key (3) and the magnetic body (5). When a proper key (3) is fitted into the keyhole (10), the latch channel (11) is arranged partly in the rotor (6) housing and partly in the rotor support (4): in this position the cylinder is freely rotatable. When the proper key (3) is removed, the latch channel (11) in the rotor housing is outside the line of action of the latch (8), the latch (8) being arranged in the rotor support (4) and in the latch grooves (9) of the control rings (29a, 29b).

Abstract: A lock provides a locking function after the insertion of a coin into it. The lock includes a punch card scanner which serves to enable the lock to provide the locking function. The lock includes a moveable bolt which is responsive to the scanner and a detent-like blocking catch. Movement of the bolt toward a locked position urges an inserted coin to lift the blocking catch, thereby freeing the bolt for further movement.

Abstract: The locking system comprises a magnetic key having a plurality of parallel rows of magnets arranged in a pattern one behind the other and forming a locking code of the magnetic key, and a reading device into which the magnetic key can be inserted in the direction of the rows of its magnets. The reading device comprises magnetic field sensors for the serial reading of the locking code formed by the magnets. A control circuit which compares the information of the read locking code with the information of a predetermined locking code generates a control signal in dependence upon the conformity or difference of the locking codes. At least the magnets of the pattern positions of each row which are immediately adjacent in the row direction are oppositely polarized.

Abstract: A cylinder lock-key combination includes a cylinder housing (1) having arranged therein a rotatable cylinder plug (2) having a slot (3) for a key (8). Arranged on the spine of the key is coded information in the form of regions (8a, 8b) of mutually different magnetic permeability. When the key moves relative to the housing these regions cause variations in a magnetic flux generated by a magnetic body (5k) and passing the key slot (3). A differential field plate (5) arranged in the housing and incorporated in an electric circuit, which also incorporates a bridge coupling, is arranged to convert said magnetic flux variations to momentary changes in resistance in the electric circuit, causing the bridge coupling to become unbalanced so that an electric pulse train corresponding to the coded information is generated in the circuit. This pulse train is sensed and evaluated by means, for example, of a data processing device. The invention also relates to a cylinder lock and a key for said combination.

Abstract: A lock for operation by a magnetic key has a magnetic locking element (47) which moves in aligned, longitudinal grooves formed in inner (10) and outer (18) members of the lock. When the locking element is aligned with a transverse channel (57) in the inner member, limited relative rotation of the members can occur.

Abstract: A magneto-electronic lock includes a key body having a magnetic combination. In the interior of a receiver of the key body are arranged magnetic detectors, a bolt, and an electronic circuit device connected between the bolt and the detectors. Positive and negative magnetization devices cooperate, depending on the position thereof, in opening, closing or blocking an electronic circuit including an electric opening pulse of a gate. A device determines the electric continuity both in the key and in the receiver thereof. An electric derivation device opens a code. Passive positive and negative relays are in combination with positive and negative magnetic elements. Positive and negative magnetic devices have potentials to act on the passive relays in the contact threshold.

Abstract: A key-operated lock, which comprises a reading head with a Hall generator, whereby the key is provided with magnetically readable data locations each of which forms at least a dual code. Between the individual data locations, magnetically readable time pulse planes are located. The data locations are represented by coded segments of soft magnetic material or permanent magnets. The timing pulse planes are either represented by these coded segments or are identified by the Hall generator in that the inductance between successive data locations drops to a value close to zero without rendering necessary any coded segments. Furthermore, circuits are described for analyzing the signal voltages supplied by the Hall generator for receiving clear signals or blocking signals for the lock.

Abstract: A card operable magnetic lock apparatus comprising an elongated non-magnetic plate member and a plurality of tumbler members which are normally biased into engagement in longitudinally spaced recesses of the plate member to prevent longitudinal movement thereof. The tumbler members pivot about a common axis and have north and south magnetic poles which are substantially opposite relative to the axis. A properly encoded magnetic card can be positioned adjacent the tumbler members to urge the tumbler members out of engagement in the recesses to free the plate member for longitudinal movement.

Abstract: A lock device comprising a fixed cylindrical member, a rotatable member fitted into said fixed member and rotated to cause a dead bolt to be reciprocated and having a key hole extending along the axial center line thereof, and a means for locking said fixed member to said rotatable member by a plurality of permanent magnets arranged according to a predetermined pole pattern, wherein said locking means can be released so as to enable the lock device to be locked and unlocked when a key having a plurality of permanent magnets embedded on both sides thereof according to the predetermined pole pattern is inserted into the key hole, characterized by a fixed guide cylinder rotatably housed in said fixed member, an engaging means for fixing the fixed guide cylinder to said fixed member and releasing the fixed guide cylinder from said fixed member, a pattern reading means for detecting the pole pattern of said key, and a driving means for driving said engaging means to fix said fixed guide cylinder to the fixed membe

Abstract: A magnetic locking device for a door comprises a latch slidable from a locking position to an unlocking position and vice versa, a locking element provided with a number of webs and slidably mounted within the latch for moving the latch between the locking and unlocking position, and a number of magnetic rotors in the latch. Each magnetic rotor is formed with a recess in which the respective web of the locking element is engageable when the latch is moved from the locking position to the unlocking position. The magnetic locking device is further provided with a blocking element engageable with the locking element in the locking position and unlocking position.

Abstract: A locking device includes a key and a reading device. The key has a grip portion and a plurality of information carrier parts attached to the grip portion. The information carrier parts determine the locking code for the key. Each information carrier part is arranged to receive an information element and the carrier parts are adjustably positionable for disposing the information elements into a predetermined angular pattern. The reading device is arranged to read the locking code on the key and to compare it with a predetermined locking code for operating a lock. The information carrier parts are mounted on a member extending axially from the grip portion of the key. The carrier parts are angularly adjustably positionable about the axis of the member. The reading device contains elements for the detecting the presence or absence of the information elements in predetermined angular positions.

Abstract: A magnetic lock wherein the movable portion is sandwiched between two stationary portions. The movable portion carries a plurality of transversely slidably movable magnets which serve as pin tumblers that fit into recesses or cavities in either stationary part to lock the movable member against movement. Fixed to one of the stationary parts are means for biasing the pin tumbler magnets toward the other stationary part whereby to hold the lock in unlocked condition. The key is placed adjacent the other stationary part and carries magnets poled to repel the pin tumbler magnets with an equal and opposite force to the biasing means to locate the pin tumblers wholly within the movable part so that the movable part may be moved. Preferably, at least two of the biasing means have different strengths for biasing the pin tumbler magnets.

Abstract: The invention relates to a magnetic tumbler lock comprising an inner cylinder adapted to turn in an external housing, said inner cylinder having a keyhole for receiving a key, locking means including at least one magnetic tumbler, which is adapted to rotate about a rotary axis extending substantially transversely of the longitudinal axis of the inner cylinder, and a key which is provided with a magnet for co-operating with the magnetic tumbler causing the magnetic tumbler to rotate into an unlocked position when the key is inserted into the lock.

Abstract: An anti-theft device for a vehicle having an internal combustion engine provided with an electrical circuit constituting an ignition or engine-heating circuit. The device includes a first circuit member having an output, a second circuit member having an input, the first and second circuit members being parts of the electrical circuit. A plurality of magnetic switches are disposed in a housing. One or more of the magnetic switches are electrically connected in series between the output of the first circuit member and the input of the second circuit member, all remaining ones of magnetic switches are connected between the input of said second circuit member or the output of the first circuit member and ground of the electrical circuit. One or more magnets are carried on a support in the form of a key which can be inserted into a slot in the housing.

Abstract: A locking device includes a key having a locking code and a device for reading the locking code on the key and comparing it with a predetermined locking code. The key has a grip portion and an elongated information carrier extending outwardly from the grip portion. The key is insertable into an opening in the reading device. Magnetic information elements are provided along the information carrier and reading elements in the reading device read the information elements when the key is inserted. A projection extends outwardly from the information carrier transversely of its elongated direction. An information element is located on the projection and a corresponding reading element is provided within the reading device. The dimension of the projection outwardly from the information carrier is such that only the information element located on the projection can excite its corresponding reading element.

Abstract: A mechanical magnetic key operated door lock structure particularly adapted for use in hotel locksets. An occupancy indicator is incorporated in the lock structure to indicate that the lockset is locked from the inside, thus insuring privacy for the hotel guest. In addition, means operable from outside the lock structure is provided for changing the combination of the lock so that a newly arriving guest may be provided with a key having a different combination from that used by the previous guest.

Abstract: A lock system has an elongated key provided with a plurality of permanent magnets spaced axially and angularly apart along the key in a predetermined magnet array. A cylinder having no moving parts defines a passage generally complementary to this key and provided with a plurality of magnetic-field detectors at least some of which are arrayed to be in line with the magnets of the key when it is inserted into the passage. An electronic circuit is connected to these detectors and to an electrically operable latch and is programmed to open the latch when those detectors that are in line with the permanent magnets change state in a manner indicating that they are juxtaposed with the respective magnets, but not when one or more detectors out of line with the magnet array are similarly subjected to a magnetic field.

Abstract: A magnetically operable key comprises a cylindrical casing containing a turnable member, a drive member and a latch, which are all co-rotatably mounted in the casing with the drive member axially displaceable between the turnable member and the latch within the casing. The drive member has a groove defined thereon which has two circumferential portions and a slanted portion interconnecting the circumferential portions. An engagement pin is connected to the casing and extends into the guide groove for causing axial movement of the drive member when the drive member is rotated and when the pin is disposed in the slanted portion. At least one magnetic piece is pivotally mounted to the turnable member and movable by a magnetic key from a misaligned position to an aligned position. The drive member has a cavity for receiving the magnetic piece when aligned to permit axial movement of the drive member. The misaligned magnetic piece abuts against the drive member and prevents axial movement thereof.

Abstract: An operating mechanism for a lock and the like is operated by means of a key on which permanent magnets may be secured in available magnet positions of a fixed pattern of such positions, selected positions being occupied by magnets. A reading device includes a reader body and a guide for guiding the key into a predetermined position in which respective sensors are contiguously adjacent each available magnet position and respond to the presence of a magnet in the adjacent position by generating an electrical signal. The several signals are compared with a reference signal, and an operating signal is generated by a comparator connected to the sensors and to the source of the reference signal when the sensor signals agree with the reference signal.

Abstract: In order to determine the identity and authorization of a key which is inserted into a cylinder lock, the key is provided with an information carrier with elements which are magnetically passive and inductively readable and yield permanently stored information. The carrier is fixed to the key blade. A reading head mounted in the lock reads the carrier as the key is moved into or out of the lock. An electronic evaluation circuit uses a micro-processor to interpret the information. The carrier is so designed that alterations made in it after it is coded are immediately detected by the evaluation circuit. A particular relationship of the reading head to the information carrier is described for a particular pattern of loop-shaped information elements on the carrier.

Abstract: A switching system for controlling operation of conventional environmental apparatus of the type having an electrical connection adapted to be coupled with a supply of electrical current includes a switching circuit in a first housing for making and breaking a circuit connection between the connection and the current supplied, and a control circuit electrically coupling a magnetic detector with the switching circuit in order to operate the switching circuit to alternatively make and break the circuit connection between the power cord and the current supply responsive to detection of a magnetic element.

Abstract: A novel method and apparatus for opening a magnetic cylinder lock of the type having an outer cylinder, a rotatable inner cylinder disposed within the outer cylinder, one or more magnetic pins disposed within chambers of one of the cylinders for engaging the other cylinder to prevent the inner cylinder from rotating, and a keyway within the inner cylinder for insertion of a magnetic key to displace each pin and release the inner cylinder, thereby opening the lock. A probe is provided for insertion within the keyway to determine the presence and polarity orientation of each magnetic pin by detecting its magnetic field. An indexing arm within the probe abuts the lock and provides a signal representative of the position of each pin chamber. Sensor circuitry correlates a signal from the probe representative of the presence and polarity orientation of each pin with a signal from the indexing arm representative of the position of each pin chamber and displays the "combination" of the lock.

Abstract: A lock for operation by a magnetic key has locking elements in the form of rollers which can be moved along respective channels in the lock by the magnetic field of the key. Each channel is formed partly in the peripheral surface of a rotatable barrel of the lock and partly in a surrounding sleeve. The barrel can be rotated only when each sleeve is free to move axially relative to the barrel. In the absence of the key, the rollers prevent such axial movement. When the rollers are moved to predetermined releasing positions by the key, they are aligned with respective notches in the sleeves so that axial movement is permitted.

Abstract: A door lock structure adapted to be actuated by a magnetic card key to operate a conventional cylindrical door lock with substantially no modification to such lock. A housing containing the magnetically operated elements of the lock is mounted, along with a modified knob, on the conventional spindle of the lockset in lieu of the usual door knob. The housing is freely rotatable relative to the lockset spindle to prevent wrenching. The latchbolt retractor of the lockset is actuated in the normal manner to unlock the lockset by rotating a conventional driver bar. The driver bar in this structure is rotated by registering interengaging elements carried by the driver bar and a slide which is actuated by a properly coded magnetic card key. The modified knob may be freely rotatable on the spindle or may be fixed thereto.

Abstract: A fuel cap is provided for threaded engagement with a vehicle fuel tank inlet in which a locking mechanism employs a key to move a lug from a stable locking position to an unstable unlocking position. The key may be immediately removed and the fuel cap may be threadably disengaged from the inlet and thereafter reengaged therewith once fuel has been introduced into the tank. The key need not be employed to lock the fuel cap, since once manipulation of the fuel cap to threadably engage the cap with the fuel inlet is initiated, the lug is moved from the unstable unlocking position to a stable locking position. The cap may thereafter not be threadably disengaged from the fuel tank inlet unless a key is employed to again shift the lug to the unstable unlocking position. A clutch mechanism is employed to prevent overtightening of the cap and consequent damage to the cap or fuel tank inlet, yet allow sufficient tightening to effectuate a vapor tight seal between the cap and the inlet.

Abstract: The invention pertains to magnetically operated locks, and particularly pertains to a magnetic lock using a code device having a low magnetic permeability wherein a small localized portion of the code device surface is magnetized to produce dipoles located at a common surface, the localized magnetized region functioning to position magnetic elements of a lock.

Abstract: A lock has a cylinder formed with a keyhole and rotatable in a housing. At least one tumbler is displaceable into the keyhole into engagement with a bit of a key which can position the segments of the tumbler so as to allow rotation of the cylinder in the housing. In addition the key is provided with a magnet that can coact with a magnetic rotor to rotate this magnet into a position that aligns a notch on the magnet or a control wheel controlled thereby with a retaining element. The housing is formed at its back end with a recess in which one end of the retaining element is urged by a weak spring. Only when the notches on the rotors are aligned with tabs on the retaining element can this element be displaced out of the recess in the housing and allow rotation of the cylinder relative to the housing.

Abstract: A substantially indestructible magnetic card key having an exterior formed completely of metallic material such as stainless steel. In the preferred form, one side of the key is of magnetizable material and the other of nonmagnetizable material to enhance the operation of the key and simplify its encoding.

Abstract: A device for opening locks with magnetically actuated tumblers or pins is provided with a housing of non-magnetizable composition and a plurality of interlocking gear wheels, pivotably retained in the housing, and also constructed from materials not susceptible to permanent magnetization. The gear wheels are pierced by a plurality of orifices across their thickness and cylindrical permanent magnets are inset into each orifice with a substantially random distribution of their North and South poles with respect to the faces of the wheels. Means are provided to rotate the wheels simultaneously around their pivot axes, thereby generating a changing, random distribution of magnetic fields arising from the interaction of the inset permanent magnets.

Abstract: The following specification describes a magnetically operated lock for a coaxial switch in which slide member is operated in opposite directions by a slide magnet in a key to connect an incoming coax line to either another coax line or to ground through a characteristic impedance termination.The key has a configuration corresponding to the lock housing and when associated with the lock housing, automatically positions a plurality of spaced magnets in the key to operate a plurality of pins in opposite directions to unlock the slide. Removal or disengagement of the key from the lock housing enables the pins in the lock to engage the slide and lock the switch in either position to which it is operated.

Abstract: A magnetic lock having an outer shell with a cylindrical bore therein and a cylindrical plug rotatably mounted in the bore for movement between locked and unlocked positions. The annular plane between the plug and the inner bore surface define a shear plane for the lock. The plug is provided with a longitudinally extending keyway and a plurality of radially extending longitudinally spaced apart passages which communicate with the shear plane but not with the keyway. The shell is provided with a like plurality of passages which align with the plug passages when the plug is in locked position. Disposed within each of the plug passages is a magnetic pin tumbler of length that is less than the length of the plug passages. Drivers are provided which extend from the upper ends of the magnetic pin tumblers to a point within the aligned shell passage to bridge the shear plane and hold the lock in locked position.

Abstract: A magnetically operated lock includes a fixed lock body in which a plurality of fixed permanent magnets are disposed in a predetermined pattern. Aligned with each permanent magnet is a hole in which a movable magnet is slidably disposed, the movable magnet being oriented to be repelled by the fixed magnet. A lock shaft is pivotally secured through the lock body, and a rotor secured to the shaft is disposed adjacent to the openings of the holes receiving the movable magnets. The rotor includes a plurality of detents which receive the movable magnets, locking the shaft in a fixed position. The key comprises a disc having a plurality of magnets embedded therein and oriented to repel the movable magnets and free the rotor and shaft for rotation.

Abstract: A door lock structure adapted to be actuated by a magnetic card key and to actuate a conventional cylindrical door lock with substantially no modification to such door lock. A housing containing the magnetically operated elements of the lock is mounted coaxially relative to the cylinder plug of the conventional lock. Insertion of a properly coded magnetic card releases a locking bar which normally holds the structure in locked position, and the entire assembly may be turned to retract the latch or dead bolt.