Patent ID: 7357051

Claim:
A ratchet-type adjustment device for the ratcheting displacement of an adjustment body with respect to a fixed base element by means of an oblong actuating element, where the actuating element has the characteristic that said actuating element may be adjustably displaced along first and second linear toothed portions, which are fitted to the adjustment body on either side of the actuating element, and latched into the first linear toothed portion, acting as a driving toothed portion, by means of first ratchet elements, characterized by at least two second ratchet elements directly mounted pivotably on the fixed base element, the ratchet elements having latched and unlatched positions, which ratchet elements, when in the latched position, are latched into the second linear toothed portion, acting as a blocking and braking toothed portion, to block a displacement movement of the adjustment body with respect to the fixed base element; wherein the fixed base element has recesses in which in each case a pin arranged on each first ratchet element is guided, the pins being oriented orthogonally with respect to the displacement direction of the actuating element.