Abstract: A chair, in particular an office chair, comprises a pedestal for supporting relative to the floor, a seat support connected to the pedestal, a seat arranged on the seat support, and a backrest support supporting a backrest, which is detachably connected to the seat support.

Abstract: A chair, in particular an office chair, comprises a pedestal for supporting relative to the floor, a seat support connected to the pedestal, a seat arranged on the seat support, and a backrest support supporting a backrest, which is detachably connected to the seat support.

Abstract: A fuse for a projectile has a primary firing assembly and a secondary firing assembly. The secondary firing assembly, which is separated from the primary firing assembly by a barrier, has a firing relay with a relay explosive in a sleeve component and a firing booster. When using insensitive explosive for the secondary firing assembly, little energy should be lost in the relay from the primary to the secondary firing assembly, with enhanced safety against inadvertent firing in the secondary firing assembly. For that purpose, the sleeve component forms a gas-tight seal for the secondary firing assembly with respect to the primary firing assembly.

Abstract: A spring unit (11) for the weight setting of a chair (1), in particular an office chair, having a gas spring (12) and having a number of further spring elements (17, 18, 19; 27, 28) which can be connected up to the gas spring (12) individually or in combination. The spring unit (11) is expediently arranged between a seat carrier (7) connected to a rotary column (8) of the chair (1), and the seat (3), or a backrest link (4) which extends at least approximately parallel to said seat (3) and belongs to a backrest (2).

Abstract: The invention relates to a seat and/or backrest covering for a chair, in particular an office chair, having a frame-tensioned mesh-like fabric (3), which is penetrated by a large number of pins (4) provided on the periphery of a load-bearing frame (1) that surrounds the seat or backrest, and is held by means of a covering frame (2) fitted onto the load-bearing frame (1).

Abstract: A longitudinal adjusting element has a housing (1) which is filled with a pressurizing medium and in which a piston (12) including a piston rod (16) is guided displaceably. The housing chambers (13,14) which are separated from each other by the piston (12) can be connected with each other or separated from each other with the assistance of a valve device (17). The valve device (17) has at least two overflow ducts (16,40) [sic. (26,40)] which have different throttling effects and which take effect jointly or successively while valve pin (29) is slid in to varying extents.

Abstract: An adjustable length gas spring comprises a housing, in which a piston mounted on a piston rod is guided for displacement. The piston divides the housing into two partial volumes. Furthermore, a valve is provided for the interconnection of the partial volumes. A device is provided for closing the valve, by means of which the valve is closed when the partial volume which the piston rod does not pass through reaches a given minimum length.

Abstract: A guide bush for an adjustable length column for chairs, tables or the like is provided, in its inner portion, with a slide bush concentric of a central longitudinal axis for the guidance of a cylindrical housing of a gas spring. The outside wall of the slide bush is provided with spaced ribs for the reception and support, radial to the axis, in an upright tube of the column. The ribs are elastically deformable radially to the central longitudinal axis.

Abstract: The valve of an adjustable length gas spring comprises a valve body which has two outside seals and two inside seals. The seals are applied integrally to the valve body by injection-molding.