Patent ID: 7667345

Claim:
A device for blocking and for releasing an adjusting mechanism, the adjusting mechanism having at least two parts which are movable relative to each other, the parts being provided in a first position with respect to each other in a first setting of the adjusting mechanism, and the parts being provided in a second position with respect to each other in a second setting of the adjusting mechanism, the device having a blocker, it being possible for the blocker to be brought at least into a blocking position and into a release position relative to the adjusting mechanism, an adjustment of the adjusting mechanism from its first setting to its second setting being provided only when the blocker is in its release position, wherein the improvement comprises an electric unlocking actuator for changing the position of the blocker between a blocking position and a release position, wherein when the unlocking actuator is activated, a first power requirement for releasing the blocker is provided, and in that, in order to maintain the releasing of the blocker, a second power requirement of the unlocking actuator is provided, the second power requirement being smaller than the first power requirement, wherein the unlocking actuator comprises a first partial unlocking actuator and a second partial unlocking actuator, the first and second partial unlocking actuators jointly bringing about the release of the blocker.