Patent ID: 8820837

Claim:
A locking device for an adjustment fitting of a vehicle seat, the locking device comprising a locking cam which can be rotated about a first rotational axis and an actuation element which can be rotated about a further rotational axis, the locking cam having a locking position and a release position, the actuation element having a toothing system comprising a first plurality of teeth, the locking cam having a mating toothing system comprising a second plurality of teeth, the mating toothing system meshing with the toothing system, wherein the mating toothing system has a first opening flank on the locking cam, and wherein the toothing system has a second opening flank on a leading circumferential edge of a first tooth of the first plurality of teeth; wherein a first contour of the second opening flank is different than a second contour of a third opening flank on a leading circumferential edge of a second tooth of the first plurality of teeth, the second and third opening flanks face a direction of rotation of the actuation element, and the second opening flank is configured to contact the first opening flank in response to rotation of the actuation element in the direction of rotation to drive the locking cam toward the release position; and wherein the toothing system has a second closing flank on a trailing circumferential edge of the first tooth of the first plurality of teeth, and a first tooth gap of the toothing system which adjoins the second closing flank is enlarged in comparison with a second tooth gap which adjoins a third closing flank on a trailing circumferential edge of the second tooth of the first plurality of teeth.