Abstract: A piston-cylinder assembly includes a cylinder having a cylinder interior filled with a fluid and divided by a piston, which is axially displaceable in cylinder, into a first working space and a second working space. A piston rod is arranged on piston and is guided through second working space and through an end-side second closure in a manner sealed off to the outside at the second end of the cylinder. The retraction stroke of piston and piston rod is restricted by a stop which is arranged in cylinder and against which piston comes to bear directly or indirectly, wherein the axial position of the stop in cylinder is variably adjustable by an adjustment device.

Abstract: A damping unit includes a cylinder which is filled with a damping fluid and in which a piston rod is guided, the piston rod associated with a bottom surface which has at least one axial through-hole which defines an effective flow cross section for the damping fluid; wherein the piston rod includes: a sleeve element which is fixed on the piston rod in the axial direction; a piston bottom element which is supported on the piston rod so as to be axially slidable and includes the bottom surface; a resilient element; and a termination element which is fixed on the piston rod in the axial direction and forms an indirect or direct stop for the piston bottom element in the insertion direction of the piston rod.

Abstract: The present invention relates to a screw arrangement (10), comprising: a drive unit (16) for introducing a torque into the screw arrangement, a drive element (24) driven in rotation about a main axis (A) of the screw arrangement by the drive unit (16) and having an external thread (30), and a driven element (12) having an internal thread (32), which is in threaded engagement with the drive element (24). The invention further relates to a seat arrangement.

Abstract: An office chair including a base, a seat, a chair column that extends in the vertical direction between the base and the seat, and a backrest, further comprising an electric drive unit that comprises an electric motor and a change gear, the change gear being designed to input the rotational force of the electric motor into a first adjustment device for adjusting a seat height of the seat and converting said force in a second adjustment device for adjusting a tilt of the seat or the backrest.

Abstract: The invention relates to a movement-damping unit (30) comprising a receiving tube (32) having a longitudinal axis (A), a relative movement unit (34) which is received in the receiving tube (32) and which is displaceable back and forth relative to the receiving tube (32) substantially in the direction of the longitudinal axis (A), and a friction device (41) acting between the receiving tube (32) and the relative movement unit (34). According to the invention, the friction device (41) comprises at least one switching element (44, 48) assigned to the relative movement unit (34) and having an engagement portion (48a) formed so as to widen radially in the direction of the longitudinal axis (A), wherein at least one resiliently compressible friction element (46, 50), which comprises a recess (50a) intended for engagement with the engagement portion (48a) and is arranged on the longitudinal face of smaller diameter of the switching element (44, 48), is assigned to each switching element (44, 48).

Abstract: The present invention relates to a piece of furniture comprising at least one adjustable use portion, in particular an office chair having an adjustable seat and/or an adjustable backrest. The present invention further relates to an adjusting assembly that can be used, for example, for a piece of furniture of said type.

Abstract: The present invention provides an office chair (2) comprising a base (8), a seat (4), a chair column (6) that extends in the vertical direction between the base (8) and the seat (4), and a backrest (12), further comprising an electric drive unit that comprises an electric motor and a change gear, the change gear being designed to input the rotational force of the electric motor into a first adjustment device for adjusting a seat height of the seat (4) and converting said force in a second adjustment device for adjusting a tilt of the seat (4) or the backrest (12).

Abstract: The invention relates to a system comprising a seat (10) and a mobile terminal that are or can be connected to one another in order to transmit data, wherein the seat (10) comprises at least one electromechanical actuator (22, 24, 26, 28) and/or at least one sensor element (32, 34, 36, 38), the mobile terminal is designed to receive inputs from a user and control the at least one actuator (22, 24, 26, 28) on the basis of these inputs and/or to receive and process data collected by the at least one sensor element (32, 34, 36, 38), and the seat (10) and the mobile terminal are each provided with at least one communication means (44), which are designed to wirelessly transmit data between the seat (10) and the mobile terminal. The invention also relates to a corresponding method.

Abstract: The present invention relates to a screw arrangement (10), comprising: a drive unit (16) for introducing a torque into the screw arrangement, a drive element (24) driven in rotation about a main axis (A) of the screw arrangement by the drive unit (16) and having an external thread (30), and a driven element (12) having an internal thread (32), which is in threaded engagement with the drive element (24). The invention further relates to a seat arrangement.

Abstract: A damping unit includes a cylinder which is filled with a damping fluid and in which a piston rod is guided, the piston rod associated with a bottom surface which has at least one axial through-hole which defines an effective flow cross section for the damping fluid; wherein the piston rod includes: a sleeve element which is fixed on the piston rod in the axial direction; a piston bottom element which is supported on the piston rod so as to be axially slidable and includes the bottom surface; a resilient element; and a termination element which is fixed on the piston rod in the axial direction and forms an indirect or direct stop for the piston bottom element in the insertion direction of the piston rod.