Abstract: A flat key having a grip element (2) and a key bit (3), the grip element (2) including a casing (4) and the key bit (3) being arranged in a manner enabling it to be moved into and out of the grip element casing (4) and to be fixed in its respective extreme position. In order to provide a flat key (1) with an axially displaceable key bit (3) which has an inexpensively manufactured drive and requires relatively small dimensions, a spring (7)—preferably a scroll spring—is disposed as the drive in the grip element casing (4), the two end zones (8, 9) of said spring each being wound spirally onto two holders (10, 11) arranged at the side of the key bit (3). The central zone (12) of the spring (7) rests against a support (13) on the end of the key bit (3) that is situated inside the grip element casing (4), with the usual result that when the key bit (3) is inserted into the grip element casing (4) the spring (7) becomes uncoiled from the holders (10, 11) and thus tensioned.

Abstract: A device with a selection lever, which is pivoted about a rotational axis and arranged on a selection lever housing, for motor vehicle automatic transmissions, wherein a barring bolt connected with a lock cylinder is provided for the bolting mechanism of the selection lever. To keep the selection lever housing which rises into the vehicle's interior as small as possible, the barring bolt is disposed underneath the rotational axis of the selection lever. For the bolting mechanism of the selection lever, the barring bolt then engages a groove-shaped recess, of a pivoted catch lever arranged likewise underneath the rotational axis. The catch lever is fixed by the barring bolt and also fixes the selection lever in its bolted setting with a tang. For this, the selection lever is designed as a reversing lever, so that the tang of the catch lever engages the (second) lever part of the selection lever located underneath the rotational axis.

Abstract: A novel locking system of the type which has very useful properties and at the same time can be produced cost-effectively, and is therefore suitable to be a mass-produced product, particularly for use in motor vehicles and building fixtures.