Abstract: An assembly fitting has a first fitting part (1), which is provided for attachment to a first component, and a second fitting part (10), which is provided for attachment to a second component. The first fitting part (1) and the second fitting part (10) can be connected to one another by means of a bayonet coupling, whereby a sleeve part (2) of the bayonet coupling is formed in the first fitting part (1) and an insertion part (11) of the bayonet coupling is formed in the second fitting part (10). The insertion part (11) has a number of radial tongues (12). The sleeve part (2) has an inner sleeve opening (4) and tongue openings (5) radially formed thereon, corresponding to the number of tongues (12). Each radial tongue (12) has at least one lug (13), whose outer radial distance from a center of the insertion part (14) essentially lies on a circle and the shape of the inner sleeve opening (4) corresponds essentially at least in part to this circle.

Abstract: The invention relates to seat and backrest arrangements in seat furniture, in particular office chairs, which comprise a seat plate, a seat-plate support and a backrest support and in which the seat plate (1), in the region of its front, knee-side edge (2), is connected moveably to the seat-plate support (3) and, in the region of its rear edge (5), is connected moveably to the backrest support (6), the backrest support (6) being coupled displaceably to the seat-plate support (3). The seat and backrest arrangements according to the invention are characterized in that a spring means (4) for cushioning the seat plate (1) and the backrest support (6) is arranged in the region of the front, knee-side edge (2) of the seat plate (1)—between the seat plate (1) and seat-plate support (3).

Abstract: An office chair that is adjustable in height and inclination includes a carrier body held on an upright standard, a swivel body arranged on a knee side of the carrier body, a seat carrier which is swivellable about a first joint position on the knee side. A backrest carrier is operatively connected to the seat carrier at a second joint position and is coupled with the carrier body by a third joint position. The carrier body additionally has an arcuate link guide, and a link block guide can swivelly hold the backrest carrier in the link guide, the link guide is arranged between the first joint position and the upright standard. The backrest carrier is guided along the link guide, and the seat carrier, which is operatively connected with the backrest carrier, can be selectively and releaseably arranged in a plurality of positions by a snap-in mechanism. The snap-in mechanism is provided on the carrier body and can be brought into engagement with the backrest carrier.

Abstract: The invention relates to a load-bearing frame for a chair, in particular for an office chair, which can be adjusted in terms of its height and inclination and comprises a seat carrier (1), a backrest carrier (2), a load-bearing and pivoting device (80) and a standing column (5). By means of struts (46, 32) arranged on the knee side and backrest side and supported on a spindle body, the seat carrier and backrest carrier (1, 2) are mounted on a spindle body such that they can pivot about a horizontal axis (X), oriented transversely to the seat direction, against the restoring force at least of a first spring element (40, 40'), and, in any position, can be fixed, and released again, by a second spring element.