the movable joint for attachment of a seat to a rigid or stuhlgestell stool

摘要

joint (1) for the movable mounting of a seat (3) to a rigid stool or stuhlgestell (2), characterizeda kugelsegment (8) with a slot on a kopfplatte (6) with two gewindestiften (7) connected by springs (9).washers (10) and nuts (11) movable to fixed.