PCT No. PCT/DE97/00002 Sec. 371 Date Dec. 19, 1997 Sec. 102(e) Date Dec. 19, 1997 PCT Filed Jan. 4, 1997 PCT Pub. No. WO97/24959 PCT Pub. Date Jul. 17, 1997A release for a seat-back height adjuster, especially for office chairs, in which the height adjuster consists of a housing (1) in which a flat seat-back bearer (2) is held by a ball catch clamp (3, 4), where the seat-back bearer (2) has recesses or apertures (3) arranged one behind the other for locking balls (4) which are held in the recesses of apertures by means of spring-loaded clamping bevels (5'), and in which the clamping bevel (5') can be disengaged against the force of the spring by a caliper (8) guided laterally out of the housing (1), where there is a base plate (7) secured in the housing (1) which has a groove (16) fitted in the axis of the caliper (8) having a narrower cross section for the end of the caliper (8) at which the latter is inserted into the housing (1) and the base plate (7), and the groove (16) has a broader cross section in which a shuttle (5) provided with the clamping bevel (5') for the ball (4) and is wider than the narrower cross section of the groove (16), is slidingly guided by the caliper (8) against the force of a spring which is supported on the end of the groove opposite the caliper (8).
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