Patent ID: 6062646
Filing Date: 2000-05-16
Classification: A47C

Abstract:
An adjustable-height armrest, inn particular for an office chair comprisingan armrest column (1) designed as a round tube,an armrest carrier (4) which is telescopically displaceable in height on the armrest column (1) and is also designed as a round tube,an arm support (8) located on the armrest carrier (4), anda catching system (10) for fixing the armrest carrier (4) with respect to the arrest column (1) in graduated height position,wherein the catching system (10) consists of a double row, extending vertically in an opposing walls (11, 12) of the armrest column (1), of mutually aligned latching recesses (13) which are connected to one another via slots (14) and of a locking unit (16) which is arranged on the armrest carrier (4) and comprises two mutually engaged locking bolts (17, 18) which are displaceable relative to one another and of which each is provided with a latching head (23) adapted to a contour of the latching recesses (13) and a narrower web (22, 22') adapted to a contour of the slots (14) in a way that, when the locking unit (16) is latched, the latching heads (23) are located in respective latching recesses (13) while catching the armrest carrier (4) in vertical direction and rotational direction and in that, when the locking unit (16) is released, the webs (22, 22') of the locking bolts are aligned with the slots (14) for height adjustment of the armrest,wherein the locking bolts (17, 18) can be displaced relative to one another by means of a telescopic guide (24, 25, 26).