Abstract: The invention relates to a cross-sectional profile (1) for a flat key or the keyway of a cylinder lock, comprising a back surface (2), a first lateral surface (4) and a second lateral surface (4?), wherein the lateral surfaces (4, 4?) extend in the vertical direction to the back surface (2), the lateral surfaces (4, 4?) are arranged offset to one another by a distance (5), which varies along their extension, and the outline of the cross-sectional profile (1) defines a preferably substantially rectangular base profile (6), and wherein the lateral surfaces (4, 4?) each extend at least in sections along sinusoidal profiling lines (7, 7?), wherein the centerlines (8, 8?) of the profiling lines (7, 7?) lie within the base profile (6). Further, the invention relates to a flat key (16) with such a cross-sectional profile (1) and a cylinder lock with a keyway (13) for receiving such a flat key (16).

Abstract: The invention relates to a cross-sectional profile (1) for a flat key or the keyway of a cylinder lock, comprising a back surface (2), a first lateral surface (4) and a second lateral surface (4?), wherein the lateral surfaces (4, 4?) extend in the vertical direction to the back surface (2), the lateral surfaces (4, 4?) are arranged offset to one another by a distance (5), which varies along their extension, and the outline of the cross-sectional profile (1) defines a preferably substantially rectangular base profile (6), and wherein the lateral surfaces (4, 4?) each extend at least in sections along sinusoidal profiling lines (7, 7?), wherein the centerlines (8, 8?) of the profiling lines (7, 7?) lie within the base profile (6). Further, the invention relates to a flat key (16) with such a cross-sectional profile (1) and a cylinder lock with a keyway (13) for receiving such a flat key (16).

Abstract: A key, comprising: a key head; and a key shank (10), characterized in that the key shank (10) includes a torsion section (20) that is formed, in particular cold formed, along a longitudinal axis (L) at least in sections, wherein the key shank (10) includes a base cross-section (26) in a transition portion to the torsion section (20), wherein a cross-section (30) of the key shank (10) protrudes at least in sections beyond the base cross-section (26) in the torsion section (20) in a direction towards the key tip (70).

Abstract: The invention relates to a key (1) for locking a cylinder lock, comprising at least one first surface (2) and at least one second surface (2?), with sensing positions (4) provided along the longitudinal extent of the key (1), wherein at least one code (3) is provided on the first surface (2) and wherein at least one further code (3?) is provided on the second surface (2?), the codes comprising control points (6, 6?, 7, 7?) at the sensing positions (4) that are provided transversely to the longitudinal extent of the key (1) and arranged at certain control heights (5), wherein at least at one sensing position (4) at least one control point (25, 25?) has a different dimension, preferably a larger diameter, on the two surfaces than a control point (6, 6?, 7, 7?) at another sensing position (4). The invention also relates to a lock for such a key and a system made up of at least two locks and at least one key.

Abstract: The invention relates to a key (1) for locking a lock, comprising at least one first surface (2) and at least one second surface (2?), with at least one sensing position (4) provided along the longitudinal extent of the key (1), at which sensing position on the first surface (2) at least one first code (3) is provided for reading in the lock and/or at least one second code (3?) is provided on the second surface (2?) for reading in the lock, wherein at least one code (3) of the first surface (2) differs at least at one sensing position (4) from the second code (3?) at the same sensing position (4). The invention furthermore relates to a lock for a key of this type, and a system made up of at least two locks or lock groups and at least one key according to the invention.

Abstract: The invention relates to a key (1) for locking a cylinder lock, comprising at least one first surface (2) and at least one second surface (2?), with sensing positions (4) provided along the longitudinal extent of the key (1), wherein at least one code (3) is provided on the first surface (2) and wherein at least one further code (3?) is provided on the second surface (2?), the codes comprising control points (6, 6?, 7, 7?) at the sensing positions (4) that are provided transversely to the longitudinal extent of the key (1) and arranged at certain control heights (5), wherein at least at one sensing position (4) at least one control point (25, 25?) has a different dimension, preferably a larger diameter, on the two surfaces than a control point (6, 6?, 7, 7?) at another sensing position (4). The invention also relates to a lock for such a key and a system made up of at least two locks and at least one key.

Abstract: In a method for managing access control with locking units, particularly locks, and electronic keys, wherein access authorizations are stored and managed in a central processor, the keys are programmed with authorization information for a pregiven selection of locking units as a function of the respective access authorization, the authorization information is wirelessly sent from a key to a locking unit in the event of an access request, and the access authorization is determined in the locking unit as a function of the received authorization information, the programming of a key comprises the sending of the authorization information via a wireless telecommunication network to a wireless mobile telecommunication device and the transmitting of the authorization information received by the mobile telecommunication device to a memory of the key.

Abstract: In a method for managing access control with locking units, particularly locks, and electronic keys, wherein access authorizations are stored and managed in a central processor, the keys are programmed with authorization information for a pregiven selection of locking units as a function of the respective access authorization, the authorization information is wirelessly sent from a key to a locking unit in the event of an access request, and the access authorization is determined in the locking unit as a function of the received authorization information, the programming of a key comprises the sending of the authorization information via a wireless telecommunication network to a wireless mobile telecommunication device and the transmitting of the authorization information received by the mobile telecommunication device to a memory of the key.

Abstract: In a locking device with a power supply unit, the energy supply unit includes at least one chamber for a liquid or a gas as energy carrier or electrolyte former for a battery.

Abstract: In a device for locking a lock, in which an actuating member (6) can be coupled with a locking device, such as a locking lug (2), via an interposed coupling device, the coupling device comprises a driver element (7, 7?, 7?, 15, 25, 30, 30?, 36, 36?) and an actuator (8, 8?, 8?, 16, 24, 31, 31?, 38, 38?) made of an electroactive polymer, wherein the driver element (7, 7?, 7?, 15, 25, 30, 30?, 36, 36?) is movable between an engagement position and a disengagement position by the aid of the actuator (8, 8?, 8?, 16, 24, 31, 31?, 38, 38?).