Abstract: A seat that consists of a single-component body (1) includes an essentially horizontally arranged seat element (11), an upwardly projecting backrest (12) applied to the rear of the seat element (11), and two front legs (10,10?) extending at the front of the seat (11). The two separated rear legs (2?) are to be inserted and fixed in the body (1), the legs being provided with a non-rotationally symmetrical insertion part (22?). An externally accessible opening for positively inserting the insertion parts (22?) is provided on the body (1). The insertion parts (22?) and openings are provided with an enlarged surface in relation to the core diameters thereof. The insertion part (22?) is embodied as an insertion tenon (22?) extending from the rear leg (2?) and having an essentially elliptical cross-section which conically tapers off in the direction of the free end.

Abstract: The mechanism which is designed for a chair, in particular for a rotatable office chair with a gas spring which is arranged in a vertical manner in the lower frame of said chair and has a telescopically extendable piston rod for adjusting the height of a seat, has the effect that the adjustment of the inclination of the seat is synchronous with the adjustment of the inclination of the backrest. The mechanism has a base (20) which is stationary per se, through which a stationary first rotary shaft (D1) extends and on which a seat support which can be inclined is mounted. A front connecting means (21) which is connected in an articulated manner in a stationary third rotary shaft (D3) on the base (20) and in a moveable fourth rotary shaft (D4) is arranged between the base (20) and the seat support. The mechanism also has a rear connecting means (24) which is connected in an articulated manner in a moveable sixth rotary shaft (D6) at one end and in a further moveable rotary shaft (D5) at the other end.

Abstract: The invention relates to a table construction comprising a frame (2) which is provided with at least four base-struts (20) which form at least one table area (T1,T2), which are in contact in pairs in the corner regions of the frame (2) and which are connected together by means of corner angles (27) which are used as binders. Feet (3) can be mounted in a detachable manner onto the frame (2). The frame (2) is covered, corresponding to the number and the shape of table areas (T1,T2), with configured table plates (1) which are adapted in order to form work surfaces. The corner angles (27) have two lateral limbs which are arranged at a right angle in relation to each other and which receive the displaced ends of the base struts (20). The top ends of the feet (3) supporting the frame (2) are also fixed to the corner angles (27). Bridge pieces are provided in order to expand the frame (2), said bridge pieces connecting the base struts (20) in pairs and arranging them in a line.

Abstract: The chair has a sub frame (1) set on the floor, a mechanism (2) set on the sub frame, a seat (3) set on the mechanism (2) and a backrest (7) attached to the mechanism (2). The backrest (7) exhibits a backrest frame (5), which supports an elastically deformable backrest part (6) with a back panel (62). The back panel (62) has a back part (60), to which a head restraint (61) is attached. The backrest (7) is capable of pivoting about a first pivot shaft (D1) from an essentially upright, neutral position to a reclined position displaced towards the rear. The movements of the seat (3) and the backrest (7) are synchronized with one another.

Abstract: The invention relates to a seat comprising a lower frame which is placed on the floor (1) and on which a synchronous mechanism (2) is mounted. A horizontal fixed main rotational axle (D1) and a horizontal secondary rotational axle (D2) that can be pivoted about the main rotational axle (D1) are arranged on the synchronous mechanism (2). Said synchronous mechanism (2) also comprises a fixed base (20) which is to be placed on the lower frame (1) and penetrated by the main rotational axle (D1). A pivotable seat carrier (21) for fixing the seat element (3) is arranged above the base (20) and is penetrated by the secondary rotational axle (D2). First connecting means (22) are fixed to the main rotational axle (D1) and the secondary rotational axle (D2) in an articulated manner. Second connecting means (23) are provided opposite the secondary rotational axle (D2) as a connection between the base (20) and the seat carrier (21).

Abstract: The invention relates to a table which has variable dimensions, especially a long length, and is mainly used in offices and conferences. The base of the table is supported by feet (6) and carries table leaves (1,1) which are brought together at the longitudinal sides thereof, and an insert (8,81) which can be inserted in-between said leaves, can have different configurations and can be used as a support for various structures. The base of said table comprises at least two transversal supports (2) provided with a central sunken channel region (20) from which two extension arms (21) respectively extended in opposite directions, the feet (6) being mounted on said arms, and lateral struts (4) supporting the table leaves (1,1) being arranged on the outside. The transversal supports (2) are interspaced in a parallel manner, perpendicularly in relation to the longitudinal direction of the table.

Abstract: The invention relates to a table which is primarily used as an office or conference table, is longer than 2.5 m, and comprises an upwardly open trough (2) as a substructure which is arranged beneath the leaf (1) of the table and preferably consists of sheet metal which is e.g. 2 mm thick. The leaf of the table (1) is connected in a fixed manner to edges (25) which are bent away from the trough (2), creating a sandwich-type structure with mutual reinforcement of the leaf (1) of the table and the trough (2). Especially advantageously, the trough (2) has a trapezoidal cross-section. A grid of openings (210) in the trough (2) enables the feet (4) of the table to be mounted in any position. Additional appliance openings (211) are used to insert socket units (80), while installation openings (200) in the bottom (20) of the trough (2) as used as cable ducts. A height leveling device is provided in each foot (4).

Abstract: The wall rack which is designed for an office workstation, in particular a PC workstation, in a freestanding mobile embodiment or with fixed installation comprises essentially an upright base frame (1,10,10′) onto which a front panel (2,2′) is fitted on each side. The shelves (7,8) of various shapes and dimensions in the form of storage shelves (7) or work surfaces (8) which can withstand larger loads can be arranged and rearranged at selected heights on one or both front panels (2,2′). Through a subdivided opening (20) in the front panels (2,2′), which can be manually accessed by means of flaps (4) which can be pivoted upward, it is possible to access an electric socket unit for supplying power and/or for connecting communication leads for the equipment positioned in front of the wall rack.

Abstract: The seat has a seat plate which, in principle, is arranged horizontally and has an upper part (2) and a lower part (3) consisting of molded plywood which is glued together in layers, and are joined together lying one above the other. Legs (5,5′;6,6′) which have extensions (50,50′;60,60′) at the top protrude to the floor. Grooves (20) are incorporated by cutting on the lower side of the upper part (2) that faces the lower part (3), while grooves (30) are integrally formed without cutting on the upper side of the lower part (3) that faces the upper part (2). The extensions (50,50′;60,60′) of the legs (5,5′;6,6′) are fitted in the grooves (20,30) between the parts (2,3) of the seat plate. A production method for the seats is specified and, furthermore, a row connector which is particularly suitable for the seats here is proposed.

Abstract: The mounting for a seat (3) is suitable, in particular, for a chair, but also for stools, individual seats (3) on a bench or fixed seats (3). The mounting makes it possible for the seat (3) to swing resiliently in all directions or in defined directions, in accordance with changes in the user's posture. The seat (3) rests on an underframe on which a spring element (4) is arranged, said spring element being restrained in a casing (5,6) and being capable of moving elastically, in a horizontal plane, therein. The casing (5,6) is connected to the seat (3) or forms a part thereof. The spring element (4) is preferably arranged at the top of an axially extensible push rod of a pneumatic spring (2). The outer sleeve (43) of the spring element (4) is a rubber body, while the axial through-passage (45) of the spring element (4) has a preferably metallic core (44) around it. The specific advantages of the mounting result in improved seating comfort.

Abstract: The chair has a swiveling back (3, 4) whose rotational axis (D) defines a rear area on the seat (D) with a support (G) for the posterior. A section (32) of the back (3, 4) of the frame extends to the rotational axis (D) where it is connected to the seat support (2) by a single hinge (V). The upholstery is fastened to the seat support (2) in a single piece (8) extending from the seat via the rotational axis (D) to the frame section (30) behind the support for the posterior. The swiveling back consists of a rear support (3) connected by a hinge (V) and a stirrup-shaped tensioner (4) which is secured to said support and which can be inserted into upholstered part (8) of the back. The single-piece upholstery (8) stretches over both the seat and back (3). The rear support (3) has a cross bar (30) to which the upholstery is fastened and from which it extends over the back (3, 4).

Abstract: A chair mechanism (1) for office chairs comprises a synchronous mechanism with integrated negative inclination. The aim is to achieve all sitting postures occurring during office work, and in particular the correction of injurious continuous sitting. The arrangement, the function and the connection of the pivot axes and the configuration of the seat support (4) within the chair mechanism (1) have predominant novelty value. Mechanical springs, which are less expensive than gas springs, are used as component parts. Springing during synchronous movement is effected by means of a torsion spring (9), while the negative inclination utilizes compression springs (21). The mechanism offers a number of options--locking in determined functions--for special applications. In addition to the wide movement range, the apparatus is distinguished by a compact and efficient construction.

Abstract: For sorting particles of a mixed particulate material in dependence on their coefficients of sliding friction the particles are fed to a revolving endless belt which, from the feed point to the downstream discharge edge, has a length portion having a length which in dependence on the velocity of the revolving belt is so determined that only those particles of the mixed material which have the highest coefficient of sliding friction will be accelerated to the velocity of the belt while moving on the length portion, all particles having a relatively lower coefficient of sliding friction having a lower velocity at the discharge edge so that the particles which have been discharged will fly along different trajectories and are collected by correspondingly disposed devices.

Abstract: A seat (2) is mounted pivotably about a first axle (A1) on the stand (1) of the chair. The seat frame (8) is connected to a second axle (A2) which is fastened to the backrest (3) behind the backrest (3) at a horizontal distance from the latter and at a vertical distance from the first axle (A1).The backrest (3) produced from an elastically resilient material, when deflected out of its vertical position, causes the second axle (A2) to move over an arc of a circle of radius A.sub.1 -A.sub.2 ; the rear seat portion adjacent to the backrest (3) is also lowered correspondingly thereby. The backrest (3) extending over the entire height of the chair forms with its lower portion an integral component of the chair stand (1).In comparison with the known complicated and heavy backrest/seat adjustment mechanisms, a cost-effective and lightweight construction, but one which fully satisfies modern ergonomic requirements as regards sitting comfort, is proposed here.

Abstract: The vertically adjustable swivel-chair supporting column with an upright tube (1) located on the foot and with a support tube (2) telescopically movable in the latter and intended for receiving the chair seat part is provided with a lockable length-adjusting element (21) which is installed between the two tubes (1, 2) and the pull-out length of which can be adjusted in steps. The length-adjusting element (21) connected to a tube (1, 2) fixed on the same side as the foot and extendable on the same side as the seat carries, at the distal end (2.1) of the support tube (2), a guide member (22), in which is retained a linkage member (41, 42) intended for controlling the pull-out length of the supporting column. The length-adjusting element (21) is centered and supported by means of a spring intermediate piece (23) on the fixed end (1.1) of the upright tube (1).

Abstract: The seat furniture is provided with a seat-plate backrest inclination-adjusting mechanism (6), a single-column supporting device (2) and a supporting foot (1). The backrest is composed of a backrest bottom part (16) and a backrest top part (14), and when the backrest inclination is fixed the backrest top part (14) can additionally be moved, counter to the pressure exerted by a restoring-spring arrangement (13), so as to swing freely to the rear between a first and a second stop position of an adjusting-spring device (22).

Abstract: The work chair is provided with a one-piece chair shell (8), in the rear region of which an integrally incorporated hinge portion (11) is formed between the lumbar region and buttocks portion (12) and the backrest portion (11). The seat shell (13) contains a base bearer (14) which forms part of an adjusting mechanism and on which the chair shell (8) is suspended for longitudinal movement by means of spring-loaded pivoting members (27, 32). The base bearer (14) and the backrest portion (10) are connected together with the aid of a control member (36) fastened by guide means (37, 38), in such a manner that a variation of the inclination of the backrest portion (10) caused by an adjusting force brings about a simultaneous variation of the inclination of the seat shell (13) in the same direction. Through the elimination of the adjusting force, the backrest portion is returned to its normal position or position of rest.

Abstract: The work chair is provided with a backrest support (13) which is connected movably to the seat shell (4) or respectively to a base plate (10) stiffening the latter, for the purpose of individual adjustment of inclination, and is flexible in terms of bending along its vertical extension and the contour curve of which, under load, essentially approximates to the curve of the human spinal column. The inclination of the backrest can be fixed by means of a locking arrangement (14) which consists essentially of a pawl (16) which is spring-loaded (20) and of an engagement toothing (17) provided at the lower end of the backrest support (13).