The key (1) for a lock (2), comprises at least a lever (9) having a first arm (10) for starting movement and a second arm (11) for activating a tumbler element of the lock (2), the lever (9) being pivoted to the shaft (4) of the key (1) with an oscillating axis thereof being transversal to the longitudinal axis of the shaft (4) of the key (1), the first lever arm (10) and the second lever arm (11) being located on a same face (5) of the shaft (4) of the key (1).

A key device includes a generally elongate shaft portion that has first and second oppositely directed side surfaces, at least one of which is cuttable to form key cuts that define a key combination surface. First and second key combination elements, disposed in the elongate shaft portion, are side-by-side one another at different lateral positions along the width of the elongate shaft portion and located at overlapping longitudinal positions along the length of the elongate shaft portion. The first and second key combination elements are each pivotable about a pivot axis.

The key (1) for a lock (2), comprises at least a lever (9) having a first arm (10) for starting movement and a second arm (11) for activating a tumbler element of the lock (2), the lever (9) being pivoted to the shaft (4) of the key (1) with an oscillating axis thereof being transversal to the longitudinal axis of the shaft (4) of the key (1), the first lever arm (10) and the second lever arm (11) being located on a same face (5) of the shaft (4) of the key (1).

A key device includes a generally elongate shaft portion that has first and second oppositely directed side surfaces, at least one of which is cuttable to form key cuts that define a key combination surface. First and second key combination elements, disposed in the elongate shaft portion, are side-by-side one another at different lateral positions along the width of the elongate shaft portion and located at overlapping longitudinal positions along the length of the elongate shaft portion. The first and second key combination elements are each pivotable about a pivot axis.

The lock with key having expanding arm elements is an electromechanical lock mechanism. The lock with key having expanding arm elements comprises a key structure, a lock structure, and a lock control circuit. The lock structure is a fastening device. The lock structure secures the position of a first object relative to a second object. The lock structure is a releasable structure such that the position of the first object relative to the second object can be adjusted after the lock structure is released. The lock control circuit is an electric circuit. The lock control circuit forms an electronic locking mechanism that fastens and releases the locking structure. The key structure is a multi-blade structure that controls the operation of the lock control circuit.

The lock with key having expanding arm elements is a lock. The lock with key having expanding arm elements comprises a body structure and a key structure. The key structure inserts into the body structure. The key structure rotates within the body structure to release the locking elements of the lock with key having expanding arm elements. The key structure comprises a plurality of rotating blade structures. Each of the plurality of rotating blade structures interact with an independent lock mechanism selected from a plurality of lock mechanisms contained in the body structure. The rotation of each rotating blade structure within its associated independent lock mechanism releases the locking elements of the lock with key having expanding arm elements.