Abstract: A lock and key system with a very large number of code combinations. The lock (200) includes side locking tumblers (206) having pivoting fingers (208) with asymmetric key contacting portions (220r), which engage with a wave-like code pattern (105) formed at the side of the key (100).

Abstract: A key for use in a cylinder lock with a rotatable key plug having a profiled keyway including a longitudinal profile rib at a side wall of the keyway. The key has an elongated, substantially flat 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 and the inside of which comprises a side wall portion (126; 126?) being inclined and facing the bottom wall (124; 124?) of the groove. The undercut portion (129; 129?) of the groove is expanded, at its innermost part adjacent to the inclined side wall portion (126; 126?), into a longitudinally extending pocket (135; 135?).

Abstract: A key with a very large number of code combinations. The key includes a longitudinally extending by blade with a wave-like side code pattern forming a wave-like surface including a range portion at a free end portion of the key blade with the wave-like guide being formed on the key blade at a side surface.

Abstract: A high security key blade and key for use with a lock having a cylindrical shell, a key plug which is rotatably mounted in the shell, a longitudinal key slope in the key plug, and at least one locking tumbler assembly cooperating with a key being inserted into the lock. The locking tumbler assembly includes a pair of independently movable tumbler segments which are positionable in different elevational positions in a common cavity.

Abstract: A high security lock and key system with an increased number of code combinations wherein the blade of the key has a wave-like guiding surface at the side of the key blade which, upon insertion into an associated lock having a rotatable key plug, engages with one or more side locking tumblers in the lock cooperating with a side locking mechanism for locking the key plug against rotation. In order to provide an even higher number of possible code combinations, while preserving the overall dimensions of the locks and the keys of the system, an extra code level located at a longitudinally extending shelf surface, viz. at the upper boundary of the side material region where the wave-like guiding surface is cut at the side of the key blade. The invention also relates to a key and a key blade and to a lock for use in such a system.

Abstract: A high security key blade and key for use with a lock having a cylindrical shell, a key plug which is rotatably mounted in the shell, a longitudinal key slop in the key plug, and at least one locking tumbler assembly cooperating with the key being inserted into the lock. The locking tumbler assembly includes a pair of independently movable tumbler segments which are positionable in different elevational positions in a common cavity.

Abstract: A high security cylinder lock (1) and key (2) combination comprising a cylindrical shell (140), a key plug (130) which is rotatably mounted in the shell (140), a longitudinal key slot (100) in the key plug, and at least one locking tumbler assembly cooperating with a key being inserted into the lock. The locking tumbler assembly comprises a pair of independently movable tumbler segments (113, 114) which are positionable in different elevational positions in a common cavity.

Abstract: A high security lock and key system with an increased number of code combinations wherein the blade of the key has a wave-like guiding surface at the side of the key blade which, upon insertion into an associated lock having a rotatable key plug, engages with one or more side locking tumblers in the lock cooperating with a side locking mechanism for locking the key plug against rotation. In order to provide an even higher number of possible code combinations, while preserving the overall dimensions of the locks and the keys of the system, an extra code level located at a longitudinally extending shelf surface, viz. at the upper boundary of the side material region where the wave-like guiding surface is cut at the side of the key blade. The invention also relates to a key and a key blade and to a lock for use in such a system.

Abstract: A high security lock and key system with an increased number of code combinations wherein the blade of the key has a wave-like guiding surface at the side of the key blade which, upon insertion into an associated lock having a rotatable key plug, engages with one or more side locking tumblers in the lock cooperating with a side locking mechanism for locking the key plug against rotation. In order to provide an even higher number of possible code combinations, while preserving the overall dimensions of the locks and the keys of the system, an extra code level located at a longitudinally extending shelf surface, viz. at the upper boundary of the side material region where the wave-like guiding surface is cut at the side of the key blade. The invention also relates to a key and a key blade and to a lock for use in such a system.

Abstract: A lock and key system is disclosed including locks of the kind comprising a cylindrical key plug (203) with locking tumblers (205) having a body part (206a) and an integral key sensing part (206b) for engagement with an associated key (100). The key sensing part (206b) of each locking tumbler comprises at least two neighbouring key contacting portions (210a, 211a), confined within a limited region, for possible sliding engagement with a longitudinal code pattern of the associated key, at least one but not necessarily all of these key contacting portions of each locking tumbler actually engaging with a corresponding code portion of the associated key upon fully inserting the latter into the key slot of the lock.

Abstract: A high security lock and key system with an increased number of code combinations is disclosed. The system is of the kind where the blade of the key has a wave-like guiding surface (104) at the side of the key blade which, upon insertion into an associated lock having a rotatable key plug, engages with one or more side locking tumblers (206) in the lock cooperating with a side locking mechanism for locking the key plug against rotation. In order to provide an even higher number of possible code combinations, while preserving the overall dimensions of the locks and the keys of the system, the present invention provides for an extra code level (121) located at a longitudinally extending shelf surface, viz. at the upper boundary of the side material region where the wave-like guiding surface is cut at the side of the key blade. The invention also relates to a key (100) and a key blade as such, and to a lock (200) as such, for use in such a system.

Abstract: A lock and key system with a very large number of code combinations. The lock (200) includes side locking tumblers (206) having pivoting fingers (208) with asymmetric key contacting portions (220r), which engage with a wave-like code pattern (105) formed at the side of the key (100).

Abstract: A high security cylinder lock (1) and key (2) combination comprising a cylindrical shell (140), a key plug (130) which is rotatably mounted in the shell (140), a longitudinal key slot (100) in the key plug, and at least one locking tumbler assembly cooperating with a key being inserted into the lock. The locking tumbler assembly comprises a pair of independently movable tumbler segments (113, 114) which are positionable in different elevational positions in a common cavity.

Abstract: A high security lock and key system with an increased number of code combinations is disclosed. The system is of the kind where the blade of the key has a wave-like guiding surface (104) at the side of the key blade which, upon insertion into an associated lock having a rotatable key plug, engages with one or more side locking tumblers (206) in the lock cooperating with a side locking mechanism for locking the key plug against rotation. In order to provide an even higher number of possible code combinations, while preserving the overall dimensions of the locks and the keys of the system, the present invention provides for an extra code level (121) located at a longitudinally extending shelf surface, viz. at the upper boundary of the side material region where the wave-like guiding surface is cut at the side of the key blade. The invention also relates to a key (100) and a key blade as such, and to a lock (200) as such, for use in such a system.

Abstract: A removable core cylinder having a casing with a cavity, a lock core insertable into the cavity, a cylindrical, rotatable key plug located in a bore in the core, and a retainer member, which is transversely movable in the lock core between a first, locking position and a second, releasing position. The casing has an inwardly protruding locking projection which engages with an axially limited recess in the retainer member when the latter is located in the first, locking position.

Abstract: A removable core cylinder lock, comprising a casing, a lock core with a rotatable key plug in a cylindrical bore and a retainer adapted to releasably retain the lock core in an inserted position in the casing. The casing has two lugs extending radially inwards and being separated transversely from each other, whereas the lock core has two corresponding recesses on both sides of a central, rear portion, whereby the lock core can be fully inserted into the casing. The two lugs are provided with holes accommodating fasteners for fastening the casing to an object.

Abstract: A cylinder lock and key combination, wherein the lock comprises a side profile ridge (60) disposed in the key slot (53) and having a relatively shallow recess (61), in which a projection (55) on a side tumbler (54) is vertically movable, and a continuously extending edge portion (62). The key has a relatively shallow coded groove (17), which cooperates with the side tumbler projections (55) of the lock, and a rectilinear, deeper profile groove (16), into which the edge portion (62) of the side profile ridge fits. This unitary edge portion secures a good guidance of the key when the latter is inserted into the lock.

Abstract: A cylinder lock and key combination, wherein the lock comprises a side profile ridge (60) disposed in the key slot (53) and having a relatively shallow recess (61), in which a projection (55) on a side tumbler (54) is vertically movable, and a continuously extending edge portion (62). The key has a relatively shallow coded groove (17), which cooperates with the side tumbler projections (55) of the lock, and a rectilinear, deeper profile groove (16), into which the edge portion (62) of the side profile ridge fits. This unitary edge portion secures a good guidance of the key when the latter is inserted into the lock.

Abstract: A removable core cylinder lock includes a cylinder lock casing and a removable cylinder lock core inserted into the casing. The lock core has an upper massive part with a row of holes for accommodating locking tumblers, and a lower part defining a cylindrical bore in which a cylindrical, rotatable key plug is located. The lower part defining the cylinder bore of the cylinder lock core is partially cut away so as to form an axially elongated chamber accommodating a transversely movable retainer member and leaving a continuous lower wall portion. The retainer member has an axial length, which corresponds to at least half of the axial length of the row of holes in the upper massive part, and a limited circumferential extension, which is substantially supplementary to the continuous lower wall portion so as to define the cylindrical bore.

Abstract: A cylinder lock and key combination, where the key (20) has an undercut profile groove (24) at one side surface (22) thereof and, in the key slot (13), the lock key plug has a corresponding profile tongue (15) with a downwardly projecting end portion (15a), which fills up the undercut portion (29) of the key profile groove (24) upon insertion of the key into the lock.