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 lock and key combination wherein at least one locking tumbler includes a key sensing portion, a body portion and a locking portion. A cavity, accommodating an associated locking tumbler, is larger than the contour of the body portion so as to permit a translatory as well as a rotary movement of the locking tumbler in a movement plane within the cavity. A code pattern on the key blade includes at least one wave-like guiding surface. When the key blade is inserted into the key slot, the locking tumbler is controlled by two mutually spaced formations, which engage with the wave-like guiding surface of the key blade, and is guided at opposite side surfaces by two associates walls of the cavity, to be retained precisely in the movement plane. The locking portion of the locking tumbler is movable to enable the locking mechanism to be released.

Abstract: A lock and key combination is disclosed, offering a large number of codes. The combination includes a lock (200) of the kind comprising a housing having a cylindrical bore, a cylindrical key plug (202) and a number of locking pins (205a-205g) in a row along a key plug axis for locking the key plug against rotation in the cylindrical bore, and a key (100) of the kind comprising a longitudinally extending, substantially flat key blade (102), with at least two longitudinally extending formations. The key blade comprises an upper edge portion having a first code pattern (103) and a lower, massive portion having a second code pattern (104).

Abstract: A profiled key for use in an associated cylinder lock provided with a rotatable key plug having a longitudinal keyway. The key has a substantially flat key blade with a longitudinally extending profile groove at a side surface thereof and at least one local recess adjacent to the profile groove. The local recess constitutes a locally expanded portion of the profile groove, and the locally expanded portion of the profile groove has a cross-section with two opposite, non-symmetrical side walls. The local recess will accommodate a blocking element in the lock, and permit full insertion of the key blade into the keyway.

Abstract: A cylinder lock and key combination is disclosed. The lock comprises a housing (30) having a cylindrical bore and a cylindrical key plug (33) being rotatably journalled in said cylindrical bore. The key plug has a longitudinal, profiled keyway (34) and means (1, 2) for locking the key plug against rotation in the cylindrical bore unless a correctly cut key is fully inserted into the keyway. The key blade (60) has a cross-sectional profile fitting into said keyway, and a profile groove (61) extending longitudinally along the key blade. The lock comprises a blocking mechanism with at least one blocking element (20), which is movable from a first blocking position, in which first projecting portion (21) of the cross-sectional profile of the blocking element extends outside the cross-sectional contour of said profile rib, into a second blocking position, in which a second projecting portion (22) extends outside the contour of the rib and is accommodated in a recess (70) in the key blade.

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 invention relates to a lock and key combination including a cylinder lock with a rotatable key plug having a key slot for receiving a flat key blade (100) on a key, and at least two side locking tumblers (201a, 201b; 301, 302; 401, 402) which are guided in associated chambers in the key plug and have transverse fingers (211a, 211b: 311, 312; 411, 412a, 412b) projecting into the key slot. There is a code pattern (110) in a side recess (115, 118) of the key blade comprising at least two separate code surfaces formed on at least one side surface (101) of the key, including a primary code surface (131-135; 141?; 151) located in an external portion of the side recess and adjoining said one side surface (101), and a secondary code surface (141-145; 142?152) being defined in a groove forming a deeper portion of the side recess. The primary and secondary code surfaces engage with first and second fingers (211b, 311, 411 and 211a, 312, 412a) on associated side locking tumblers.

Abstract: The invention relates to a lock and key combination including a cylinder lock with a rotatable key plug having a key slot for receiving a flat key blade (100) on a key, and at least two side locking tumblers (201a,201b;301,302;401,402) which are guided in associated chambers in the key plug and have transverse fingers (211a,211b:311,312;411,412a,412b) projecting into the key slot. There is a code pattern (110) in a side recess (115,118) of the key blade comprising at least two separate code surfaces formed on at least one side surface (101) of the key, including a primary code surface (131-135;141?;151) located in an external portion of the side recess and adjoining said one side surface (101), and a secondary code surface (141-145;142?152) being defined in a groove forming a deeper portion of the side recess. The primary and secondary code surfaces engage with first and second fingers (211b,311,411 and 211a,312,412a) on associated side locking tumblers.

Abstract: A key with a very large number of code combinations. The key includes a longitudinally extending key blade with a wave-like side code pattern forming a wave-like surface including a ramp 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. A key contacting portion engages the wave-like side code pattern and is positioned by way of a specific pivotal position of the finger. A specific asymmetric displacement of the key contacting portion is formed in an asymmetric free end of the finger so that the specific pivotal displacement of the key contacting portion is available relative to the specific pivotal displacement relative to the wave-like side code pattern. The number of possible code combinations is consequently further increased.

Abstract: A cylinder lock unit is disclosed, with an elongate housing portion (2?) extending outside and along a cylindrical bore, and the elongate housing being dimensioned for being accommodated in a structural part (S) to form a lock device, with a fixed external longitudinal configuration (L) fitting into the structural part. The elongate housing portion has a linear row of cylindrical holes (22?), registering with cylindrical chambers in a key plug having a key slot. The cylindrical holes are closely packed with mutual distances dimensioned in accordance with prescribed minimum standards, and at least one of the cylindrical holes (22?), located adjacent to one longitudinal end of the elongate housing portion (2?), has an inclined cylinder axis, so that, as compared to a lock unit with only mutually parallel cylinder hole axes in the linear row in the elongate housing portion, an extra cylindrical hole is accommodated in the linear row.

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 lock and key combination is disclosed, offering a large number of codes. The combination includes a lock (200) of the kind comprising a housing having a cylindrical bore, a cylindrical key plug (202) and a number of locking pins (205a-205g) in a row along a key plug axis for locking the key plug against rotation in the cylindrical bore, and a key (100) of the kind comprising a longitudinally extending, substantially flat key blade (102), with at least two longitudinally extending formations. The key blade comprises an upper edge portion having a first code pattern (103) and a lower, massive portion having a second code pattern (104).

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: 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 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 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 cylinder lock and key combination is disclosed. The lock comprises a housing (30) having a cylindrical bore and a cylindrical key plug (33) being rotatably journalled in said cylindrical bore. The key plug has a longitudinal, profiled keyway (34) and means (1, 2) for locking the key plug against rotation in the cylindrical bore unless a correctly cut key is fully inserted into the keyway. The key blade (60) has a cross-sectional profile fitting into said keyway, and a profile groove (61) extending longitudinally along the key blade. The lock comprises a blocking mechanism with at least one blocking element (20), which is movable from a first blocking position, in which first projecting portion (21) of the cross-sectional profile of the blocking element extends outside the cross-sectional contour of said profile rib, into a second blocking position, in which a second projecting portion (22) extends outside the contour of the rib and is accommodated in a recess (70) in the key blade.

Abstract: A profiled key for use in an associated cylinder lock provided with a rotatable key plug having a longitudinal keyway. The key has a substantially flat key blade with a longitudinally extending profile groove at a side surface thereof and at least one local recess adjacent to said profile groove. The local recess constitutes a locally expanded portion of said profile groove, and the locally expanded portion of the profile groove has a cross-section with two opposite, non-symmetrical side walls. The local reces will accommodate a blocking element in the lock, and permit full insertion of the key blade into the keyway.

Abstract: A cylinder lock unit is disclosed, with an elongate housing portion (2?) extending outside and along a cylindrical bore, and said elongate housing being dimensioned for being accommodated in a structural part (S) to form a lock device, with a fixed external longitudinal configuration (L) fitting into said structural part. The elongate housing portion has a linear row of cylindrical holes (22?), registering with cylindrical chambers in a key plug having a key slot. The cylindrical holes are closely packed with mutual distances dimensioned in accordance with prescribed minimum standards, and at least one of the cylindrical holes (22?), located adjacent to one longitudinal end of the elongate housing portion (2?), has an inclined cylinder axis, so that, as compared to a lock unit with only mutually parallel cylinder hole axes in said linear row in said elongate housing portion, an extra cylindrical hole is accommodated in said linear row.