Abstract: A method for profiling the broad sides of a flat key, a key blank being clamped in a clamping device so that the broad side of the key blank is exposed. Guide grooves and variation grooves which are complementary to the longitudinal sectional profile of the cutter teeth are milled into the broad side by advance in the longitudinal direction of the key, in one work operation, using a milling cutter that has cutter teeth on its peripheral surface and rotates about a cutter shaft. To produce undercut grooves, the axis of the cutter shaft is inclined at an angle of inclination relative to the longitudinal center plane of the key, ribs of the cutter teeth producing an undercut guide wall using at least one rib.

Abstract: A method for profiling broad sides of a flat reversible key. A key blank is clamped to expose the first broad side of the key blank and complementary grooves and ribs are milled using a milling cutter with cutter teeth by advance in the longitudinal direction of the key relative to the longitudinal section profile of the cutter teeth. The key blank is then clamped in a position turned by 180° about the longitudinal center axis of the key so that the second broad side of the blank is exposed, and complementary grooves and ribs are milled into the broad side with milling cutter, by advance in the longitudinal direction of the key. The cutter shaft axes is inclined at an angle of inclination (?) relative to the longitudinal center plane of the key, at least one cutter tooth rib of the cutter teeth producing an undercut guide wall.

Abstract: Some embodiments disclosed include keys, lock cylinders, and key and lock cylinder combinations. The keys include a bow and a blade extending from the bow, where the blade includes at least one undercut groove in a lateral side thereof that receives at least one projection defining a keyway passage of a lock cylinder in which the key is positioned.

Abstract: A lock and key combination that uses a key device which includes a shaft portion, and at least one movable key combination element which is retained within the shaft portion and which includes first and second portions adjacent one another, the first portion of the at least one movable key combination element being located along on the shaft portion and the second portion of the at least one movable key combination element being located offset to the first portion.

Abstract: A key blank comprises a shaft and a head connected to the shaft, the shaft including first and second surface that are oppositely facing, wherein the surfaces are configured to include combination elements to operate a lock and a pair of coaxial operating elements, wherein one element of the pair is operative from the first surface of the shaft and the other element of the pair is operative from the second surface of the shaft, and wherein at least one of the operative elements is a resilient element mounted inside a bore provided in the shaft, wherein the resilient element is operative to exert a compressive force on a pin mechanism of the lock in response to the operative engagement and thereby release the pin mechanism from a lock position, without requiring any pressure on the coaxial element on the other side.

Abstract: A mechanical key for accommodation in a portable device for use in an electronic key system. The mechanical key is provided with a grip including a socket and a key plate fixed to the grip. The key plate includes a blade and a shank, which is inserted into the socket. The shank includes a first edge for abutting against the socket when the shank is inserted into the socket and a shoulder extending from the blade. The socket includes a guide for abutting against and guiding the first edge of the shank when the shank is inserted into the socket. The guide is mated with the first edge under pressure. The socket further includes a second edge for abutting against the shoulder when the shank is inserted into the socket. The second edge is mated with the shoulder under pressure.

Abstract: The present invention is directed to key assemblies and their mating locks, and more particularly, to keys with mutually compressible, actuating elements capable of being continuously positioned axially within apertures in a key blade.

Abstract: A cylinder lock with a rotatable key plug (112) having a profiled keyway (113,116), the keyway being configured to accommodate an elongated, substantially flat key blade (120) with a longitudinal groove (122). The keyway in the key plug has two opposite lateral sides and a profile rib (150) located at a substantially flat lateral side. The profile rib has a downwardly projecting tongue portion (161) configured to extend inside the profile groove (122) upon inserting the key (120) into the key plug (112) of the lock, and the tongue portion of the profile rib is extended downwardly into a lowermost, massive end portion (162) which has two opposite side surfaces (163,164) and a lowermost transverse end surface (165) which is substantially flat or slightly curved.

Abstract: A key system including a mechanical key and a lock apparatus into which the mechanical key is insertable. The mechanical key includes a key code pattern having recessed portions and non-recessed portions. The mechanical key is operated in key manipulation directions. The lock apparatus includes tumblers, each of which is associated with one of the recessed and non-recessed portions. The lock apparatus mechanically verifies the key code pattern when the mechanical key is inserted therein based on whether the tumblers are aligned with the associated recessed and non-recessed portions. The recessed and non-recessed portions in the key code pattern are deviated from the key manipulation directions.

Abstract: A key including a body having a first end, a second end and an axis is disclosed. The axis extends through the first and second ends. A toothed portion is adjacent to the first end, and a coupling portion is adjacent to the second end. An insertion portion has non-circular cross sections perpendicular to the axis and located intermediate the toothed portion and the coupling portion. The non-circular cross sections include at least one linear side and at least one arcuate side. The at least one arcuate side adjoins the at least one linear side and extends along a circular path. The body between the first end and the insertion portion and between the second end and the insertion portion has a radial extent from the axis less than or equal to the non-circular cross sections of the insertion portion.

Abstract: A key device for use with more than one lock, the key device including a shaft portion, and at least one movable key combination element retained within the shaft portion and including first and second portions adjacent one another, the first portion of the at least one movable key combination element being located along on the shaft portion and the second portion of the at least one movable key combination element being located offset to the first portion.

Abstract: The present invention is directed to key assemblies and their mating locks, and more particularly, to keys with mutually compressible, actuating elements capable of being continuously positioned axially within apertures in a key blade.

Abstract: The invention is concerned with a locking cylinder (1) and a matching key (2), wherein the locking cylinder comprises tumbler pins (6) with a head (7) and a tip. (8). The tip (8) engages in a coding recess (10) of the key (2) and, by withdrawing the key from the locking cylinder, slides along two sliding flanks (2), which follow on one another. The dimensions of the conical surface (9) following on from the rounding of the tip (8) and the sliding flank (12) are made to match one another in such a way that the transitional region (13) between the two sliding flanks is covered by the conical surface in the abutting position.

Abstract: A key for use in a cylinder lock with a rotatable key plug having a profiled keyway. The key comprises an elongated, substantially flay key blade (120; 120?) having a longitudinal profile groove (122; 122?) extending along at least a portion of the length of the key blade. The groove has an undercut portion (129) adjacent to a ridge portion (128, 128?), the outside of which forms part of a side surface (123; 123?) of the key blade. The undercut portion (129; 129?) of the groove is expanded, at its innermost part adjacent to and inside said ridge portion, into a longitudinally extending pocket (135; 135?).

Abstract: A key for use in a cylinder lock with a rotatable key plug having an elongated key blade with a relatively wide lower portion and a relatively narrow upper portion. A step-like transition region between the wider lower portion and the narrow upper portion. The key blade includes a longitudinal profile groove located adjacent to the step-like transition region that extends along at least a portion of the length of the blade. An inner wall of groove is substantially parallel to a side surface of the lower portion of the key blade. The longitudinal profile groove includes an undercut portion adjacent to and inside a ridge portion of the key blade. The outside of ridge portion forms a part of the side surface of the blade in the relatively wide lower portion up to the step-like transition region and the inside of ridge portion facing inner wall of the groove.

Abstract: The present invention is directed to key assemblies and their mating locks, and more particularly, to keys with mutually compressible, actuating elements capable of being continuously positioned axially within apertures in a key blade.

Abstract: A method for profiling broad sides of a flat reversible key. A key blank is clamped to expose the first broad side of the key blank and complementary grooves and ribs are milled using a milling cutter with cutter teeth by advance in the longitudinal direction of the key relative to the longitudinal section profile of the cutter teeth. The key blank is then clamped in a position turned by 180° about the longitudinal center axis of the key so that the second broad side of the blank is exposed, and complementary grooves and ribs are milled into the broad side with milling cutter, by advance in the longitudinal direction of the key. The cutter shaft axes is inclined at an angle of inclination (?) relative to the longitudinal center plane of the key, at least one cutter tooth rib of the cutter teeth producing an undercut guide wall.

Abstract: A key device for use with more than one lock, the key device including a shaft portion, and at least one movable key combination element retained within the shaft portion and including first and second portions adjacent one another, the first portion of the at least one movable key combination element being located along on the shaft portion and the second portion of the at least one movable key combination element being located offset to the first portion.

Abstract: A mechanical key code verification system including a mechanical key and a lock apparatus into which the mechanical key is insertable. The mechanical key includes a key body and a key code pattern including a plurality of recessed portions and a plurality of non-recessed portions formed on the at least one plane of the key body, the key code pattern having line symmetry.

Abstract: A combination key and window glass scorer is described for use in breaking a vehicle window to enable escape in the event of an accident rendering opening of the vehicle doors or windows impossible. The combination device includes a key body having a head, a shank and an edge; and a window glass scorer attached to the head or shank of the key body. The scorer may be in the form of a rotatable wheel or a fixed scriber, with the scorer being harder on the Mohs hardness scale than the window glass to be scored.

Abstract: A tool for unlocking a locking cylinder, with a tumbler consisting of a plurality of spring-loaded locking bodes that can be displaced crosswise to the rotational axis of the locking cylinder. The tool comprises a rotating part (1) provided with two driver noses (10) on its cylinder side end, which can be inserted into the keyway. The tool furthermore comprises a sliding part (4) that is positioned such that it is connected form-locking to the rotating part 91) in the rotating direction and axially movable in the axial direction and has a flat sensing element (6) on the cylinder-side end that can be inserted into the keyway. The cross-sectional profile of the sensing element corresponds at least in some sections to the cross-sectional profile of the keyway, wherein at least one sensing body (9) for displacing the locking body inside the locking cylinder is assigned to the sensing element.

Abstract: The invention relates to a lock-key system comprising a flat key (1), which is insertable into the keyway of a cylinder core (3), wherein grooves (4) and ribs (5) inside the keyway are assigned to corresponding ribs (5a) and grooves (4a) located on both flat sides of the key (1), wherein the key is subdivided from the key spine (6) to the key facing into different profile sections. The middle profile section is assigned to at least one groove (4) on one outer surface of the keyway (2) and to a rib (5) on the opposite outer surface of the keyway. Both the groove (4) as well as the rib (5) comprise a flank (4?, 5?), which extends perpendicular or substantially perpendicular to the center plane of the key or of the keyway, and comprise a flank (4?, 5?), which extends slantingly to this center plane.

Abstract: A removable core cylinder assembly utilizes a plurality of modular parts to create a key-removable interchangeable core which will fit all existing interchangeable core locks of this kind. The removable core cylinder assembly includes accessories of a removable face plate which covers an axial recess in the cylinder shell for the locking tab and provides shelter to the head of the cylinder plug, and which is protected from removal from the cylinder shell by two stepped portions of the cylinder plug; and a key which includes a stop at the end of the tip of the key blade.

Abstract: A pledge-lock cooperates with a pledge card having a deformable portion and a rigid portion such that the deformable portion deforms upon insertion to serve as a check on the card. When a proper card is inserted it actuates the pledge lock to release the cart and retain the card.

Abstract: Methods and apparatus for decoding pin tumbler locks, and more specifically, a mechanical key card lock. To determine the length and weight of a given pin tumbler, a probe is inserted within the lock, comprised of one or a matrix of many force sensing resistors. The probe will respond to variations in pressure and tension of each pin tumbler, and will thus provide a range of output resistances, directly related to the pressure exerted upon the sensor by a particular pin tumbler. The outputs of the sensors are then electronically sensed and recorded so that a duplicate key can be produced.

Abstract: A card type locking apparatus having a chamber enclosed by an upper half and a lower half and having a slidable element, a spring, and four spring plungers in the chamber. When a card plate with raised blocks acting as security codes thereon is inserted into a preset opening provided on the locking apparatus, the raised blocks lift the spring plungers and urge the pin rods mounted on the spring plungers to align horizontally. When the card plate is pressed further the four pin rods enter a window formed on the upper half, which results in the backward movement of the slidable element and the release of the hook, producing the unlocked state.

Abstract: A card lock and a punchable key card having a key card having through holes in the coordinating locatins to and the same number as long pin tumblers provided in a card lock for unlocking the lock without electric power, and a card lock having a plurality of pin tumblers--some long and some short mixed regularly or irregularly--and a dead bolt mover having through holes for the pin tumblers to fit and move is disclosed. The key card functions to push up the short pin tumblers to make the upper ends of all the pin tumblers become positioned in the same level as the upper surface of the dead bolt mover so that the dead bolt mover can be pushed further inward from the locked position to the unlocked position by the key card to retract the dead bolt to unlock the card lock.

Abstract: A card-operated lock using a card with embossed letters matching with corresponding letters on letter profiles in the lock for lowering of side levers on the letter profiles and consequently disengaging the letter profiles from their retaining plates to open the lock. The lock is designed to prevent opening thereof without the designated card.

Abstract: A new structure of key and lock barrel for lock set, comprising holder, nut, rotating body, braking bar, washers, barrel plates, covering plate and key; by inserting the key into the rectangular space of all barrel plates and by turning to let its slant faces of different depth push all barrel plates one after another to rotate and turn the notch of all barrel plates to one radial location, the braking bar falls into rotating body to let it rotate within the holder so as to drive corresponding lock plug making the lock open.

Abstract: A cylinder lock system employing a key having a projection extending from each opposing parallel edge of the key blade, the projections respectively operating an auxiliary pin tumbler stack and cooperating with a groove in the lock shell to retain the key in the lock after plug rotation from the key insertion position. The key retaining projection also cooperates with the driver pin of the auxiliary pin tumbler stack to prevent key trapping, i.e., the presence and size of the retaining projections keeps the auxiliary driver pin from engaging the keyway. The cooperation between the key retaining projection and the auxiliary driver pin is permitted by providing the lock with two shear lines, located on different diameters, which are simultaneously operable by a single key.

Abstract: A pneumatically-operated unlocking system suitable for use on the door of a igh security building such as a military weapons storage structure, in which each one of a pair of unlocking keys is provided with a different combination of holes and no holes arranged in an n-position pattern to define an n-bit binary code. An encoder outside of the building pneumatically reads the said binary codes on the two unlocking keys in sequence and transmits the resulting pneumatic binary codes through conduits in the building walls to a logic device inside thereof where the binary codes are compared to two n-bit reference pneumatic binary codes derived from a pair of reference keys located inside of said building. If the codes on the two unlocking keys match those on the reference keys, a pneumatic output is produced which can be used to unbolt the door from the building.

Abstract: A key reading system including a key having a plurality of rows of reading positions, each reading position cooperating with a reading position in each other row to form a set of reading positions. The reading system includes a clock line which senses all but one of the total number of code combinations of each set as a clock pulse, thus eliminating the need for a separate clock pulse row.

Abstract: A door lock, in particular a lock for hotel room doors. Actuation of the exterior door handle creates a supply of compressed air which is directed through a coding assembly to actuate a lock release member. The operation of the coding assembly is controlled by a pair of matching punched cards. One of the cards is normally positioned within the lock and the other card is retained by an authorized user for insertion into the lock to operate the coding assembly. Two separate coding assemblies are provided with a hotel door lock, one being for use by a guest and the other under the control of the hotel management.

Abstract: A push key type lock mechanism which requires insertion and removal of the key for operating of the associated bolt. The lock mechanism includes an anti-picking device which requires complete key insertion for operation of the lock mechanism to prevent trial and error picking of the lock.

Abstract: A lock for sliding doors for cabinets and the like. A shoulder on a catch element carried by the door extends through a lock opening in the cabinet frame and engages the edge thereof to secure the door. A key of particular length moves the shoulder from the locked position to an intermediate position at which it can pass outwardly through the back opening. If the catch element is moved too far, a second shoulder engages the edge of the lock opening and the door cannot be opened.