Abstract: A locking device for furniture, in particular for furniture which may be adjusted by rotation of a furniture section is provided. The locking device includes an axle which is rotatable for adjusting the furniture and which has an engagement recess limited to an angular segment about the axle. The locking device further includes a blocking element which is configured for rotational blocking of the axle by engaging in the engagement recess. The locking device further includes a support bearing which is configured to support the blocking element in a fixed rotational manner about the axle. The locking device further includes an adjusting ring rotating about the axle, which has a contoured recess for radial adjustment of the blocking element within the support bearing upon rotation of the adjusting ring about the axle. The blocking element is engageable in the engagement recess by the radial adjustment, so that the axle is lockable rotationally with the support bearing via the blocking element.

Abstract: A chair, such as a conference or office chair, includes a seat support; a backrest support; a storage member formed as a force storage element; and a transmission coupling the seat support with the backrest support which allows a pivoting of the backrest support and the seat support between an upright position and a backwardly pivoted position according to a predetermined sequence of movements. The force storage element is coupled with the seat support and the backrest support such that the predetermined sequence of movements is facilitated and the storage member provides a force restoring in the upright position and wherein the flexibly elastic storage member forms in conjunction at least with a first articulated rotation point of the transmission a kinematic chain.

Abstract: A chair, such as a conference or office chair, includes a seat support; a backrest support; a storage member formed as a force storage element; and a transmission coupling the seat support with the backrest support which allows a pivoting of the backrest support and the seat support between an upright position and a backwardly pivoted position according to a predetermined sequence of movements. The force storage element is coupled with the seat support and the backrest support such that the predetermined sequence of movements is facilitated and the storage member provides a force restoring in the upright position and wherein the flexibly elastic storage member forms in conjunction at least with a first articulated rotation point of the transmission a kinematic chain.

Abstract: A connection assembly for a backrest, of an office or conference chair, includes a backrest structural element, a transverse support element, a transverse bearing by means of which the backrest structural element is rotatably coupled to the transverse support element in a direction perpendicular to a transverse direction, and a connection portion connecting the transverse support element to the backrest structural element, arranged and formed so that the backrest structural element is resiliently movable relative to the transverse support element.

Abstract: A table system including at least one primary module and at least two secondary modules. The primary module includes a tabletop plate and a plurality of crossbars disposed parallel to each other and secured to the underside of the tabletop plate. A secondary module comprises a table leg having an upper end and a plurality of interlocking and bracing mechanisms disposed at the upper end of the table leg. A primary module and a secondary module together have an attached state and an interconnected state. The interlocking and bracing mechanisms have an open state and a closed state. In the attached state, each interlocking and bracing mechanism is in the open state, and is achieved by vertically setting the primary module onto the secondary module. In the interconnected state, each interlocking and bracing mechanism is in the closed state, interlocked independently into the interior portion of a crossbar.

Abstract: A backrest attachment device for a chair is disclosed and includes a metal bow with two bends that is designed such that a shorter intermediate piece with a 90° bend is connected to a comparatively long flank, the shorter intermediate piece in turn having connected thereto a shorter end piece with a 90° bend, wherein an intended level formed by the long flank and the intermediate piece and an intended level formed by the intermediate piece and the end piece are perpendicular to each other, and wherein the metal bow is insertable with a long flank portion thereof through an elongated hole introduced into the backrest frame and interlocked with a simple rotary motion in an interlocking mechanism within the backrest frame, and wherein the end piece of the metal bow is connectable to the frame of the chair.

Abstract: A chair is provided which has a tiltable seat carrier and a tiltable backrest on the backrest carrier which are forcibly coupled to one another, and which has an individual adjustment feature for the tilt of the seat carrier in relation to the backrest carrier. Provided on the underside of the seat carrier is a bearing block having a slideway contour and a vertical slot in which the flange of a lifting element is mounted vertically movably, wherein the lifting element has a substantially triangular collar which slides on the substantially rectangular slideway contour when the flange moves vertically. The tilt of the seat carrier can be adjusted to be steeper or flatter by turning the lifting element, and the limit positions are completely stable such that the possibility of automatic unlocking is eliminated.

Abstract: The invention provides an improvement to a chair which has a tiltable seat carrier (1) and a tiltable backrest (2) on the backrest carrier (5) which are forcibly coupled to one another, and to an individual adjustment of the tilt of the seat carrier (1) in relation to the backrest carrier (5). The improvement consists in the fact that there is provided on the underside of the seat carrier (1) a bearing block (10) having a slideway contour (14) and a vertical slot (13) in which the flange (9) of a lifting element (7) is mounted vertically movably, and the lifting element (7) has a substantially triangular collar (12) which slides on the substantially rectangular slideway contour (14) when the flange (9) moves vertically. This means that the tilt of the seat carrier (1) can be adjusted to be steeper or flatter by turning the lifting element (7), and the limit positions are completely stable. The possibility of automatic unlocking is ruled out.

Abstract: The present invention relates to a device for lumbar support (2) for an office chair with a backrest consisting of a backrest frame with a membrane stretched over it, wherein the device (2) is mounted independently of the membrane in the backrest frame and is adjustable in height as well as horizontally extendable.

Abstract: The present invention relates to a backrest attachment device for a chair (1). It comprises a metal bow (7) with two bends that is designed such that a shorter intermediate piece (9) with a 90° bend is connected to a comparatively long flank (8), the shorter intermediate piece (9) in turn having connected to it a shorter end piece (10) with a 90° bend, wherein the intended level formed by the long flank (8) and the intermediate piece (9) and the intended level formed by the intermediate piece (9) and the end piece (10) are perpendicular to each other, and the metal bow (7) can be inserted with its long flank (8) through an elongated hole (11) introduced into the backrest frame (6) and interlocked with a simple rotary motion in an interlocking mechanism (12) within the backrest frame (6), and wherein the end piece (10) of the metal bow (7) can be connected to the frame (4) of the chair (1).

Abstract: The present invention relates to a table system with at least one tabletop plate (1) exhibiting a table underside and with at least two table legs (2). The table system comprises two distinct modules, wherein a primary module includes the tabletop plate (1) and two crossbars (3) interspaced with respect to each other and securely arranged on the underside of the table, and a secondary module includes the table leg (2) with at least two interlocking and bracing mechanisms (11), wherein at least one of the interlocking and bracing mechanisms (11) of the secondary module engages in each case into one of the crossbars (3) of the primary module, and said interlocking and bracing mechanism (11) operates according to the knuckle joint principle.

Abstract: The present invention relates to a device for lumbar support (2) for an office chair with a backrest consisting of a backrest frame with a membrane stretched over it, wherein the device (2) is mounted independently of the membrane in the backrest frame and is adjustable in height as well as horizontally extendable.

Abstract: The backrest of a chair comprises a frame, a backrest support and a neck support. A membrane is clipped into the frame, and the backrest support is articulated on a tilting mechanism. The frame comprises two side parts and two cross-pieces, the lower cross-piece lying at the height of the user's lumbar vertebra. The frame and the backrest support are interconnected in one piece. The component created as a result is advantageously a plastic injection molding produced by the gas injection technique (GIT) and the plastic is a glass-fiber-reinforced polyarylamide. This overall structure of the backrest provides a high level of sitting comfort by elastic support of the back in all major regions and directions of movement, but at the same time also considerably reduces production, transport and assembly complexity and has an aesthetically impressive, distinctive form.

Abstract: A chair, such as a swivel chair for the office, has an armrest that is made up of an armrest carrier, which includes a carrier and a sleeve sliding thereon and attached to the seat at the bottom by a seat flange which can be displaced transversely to the seat direction, and of an arm support, which can be displaced longitudinally via a guide and can be rotated via a rotary part mounted in a rotary bearing. The guide is arranged parallel, but eccentrically in relation, to the axis of symmetry of the arm support. Since the rotatability of the arm support is at least 1800, it is possible to set different clear distances between the two arm supports of the chair.