Patent ID: 8651577
Filing Date: 2014-02-18
Classification: A47C

Abstract:
1. Adjustment device for an adjustable element having a guide rail and a sliding element movable along an adjustment axis in the guide rail and a locking element retained on the guide rail or on the sliding element in a locking position in which the locking element limits movement of the sliding element along the adjustment axis, the locking element selectively retained on the guide rail or on the sliding element in the locking position in which the locking element comes into operational contact with catches that are spaced-apart along the adjustment axis, wherein, when the locking element is retained on the guide rail, said catches are provided on the sliding element, and, when the locking element is retained on the sliding element, the catches are provided on the guide rail, the locking element and the catches being constructed in such a manner that the sliding element can be displaced in only one direction along the adjustment axis when the locking element is in the locking position, whilst the adjustment of the sliding element in an opposite direction is blocked by operational contact between the locking element and one of said catches, the locking element further selectively retained on the guide rail or the sliding element in a non-locking position in which the sliding element can be moved in a limited manner along the adjustment axis, the locking element having no operational contact with the catches in said non-locking position, and, the locking element further selectively retained on the guide rail or on the sliding element in an assembly position in which the sliding element can be selectively removed from or introduced into the guide rail for assembly or disassembly and step-like support faces defining the locking and non-locking positions and the assembly position of the locking element, wherein, when the locking element is retained on the guide rail, the step-like faces are provided on the guide rail, and, when the locking element is retained on the sliding element, the step-like support faces are provided on the sliding element.