Abstract: A hinge device has a first part and a second part, which are intended to be attached to a door frame and a door, respectively. The first part and the second part are rigidly connected to each other and have each a tubular housing, whose center axis defines a first hinge axis and which accommodates two balls, an axially displaceable locking member arranged axially inwardly of each ball, a compression spring arranged between and cooperating with each ball and the associated locking member, and an eccentric located between the two locking members and cooperating therewith.

Abstract: A hinge device has a first part and a second part, which are intended to be attached to a door frame and a door, respectively. The first part and the second part are rigidly connected to each other and have each a tubular housing, whose centre axis defines a first hinge axis and which accommodates two balls, an axially displaceable locking member arranged axially inwardly of each ball, a compression spring arranged between and cooperating with each ball and the associated locking member, and an eccentric located between the two locking members and cooperating therewith.

Abstract: A headrest device, intended for a chair, a seat or the like having a substantially vertical backrest, has an attachment part (1), by means of which it is to be attached to the backrest, and a headrest (6), which is mounted on the attachment part (1). The headrest (6) is mounted on the attachment part (1) by means of two link arms (7, 8), which at one end are connected, pivotally about a substantially vertical pivot axis, to the attachment part (1) and which at the other end are connected, hingedly about a substantially vertical axis, to a respective nut element (15, 16). The nut elements (15,16) are threadingly engaged with a substantially horizontal screw (23), which is turnably attached to the headrest (6) and which is arranged, in turning, to synchronously displace the nut elements (15, 16) in opposite directions along the screw (23) and thereby to pivot the link arms (7, 8) about their pivot axes to change the horizontal distance of the headrest (6) from the attachment part (1).

Abstract: Device for locking in a chair seat in a desired angular position, comprising several lamellae (1) connected with the seat, extending through a retainer (7) and between fixed lamellae (2) arranged in the retainer, whereby clamping shoes (3, 4) which are abutting against the outer fixed lamellae (2) may be clamped by bolts (5, 6) for locking the position of the seat and providing possibility for adjustment of the clamping points of the bolts, where lameellae (1) without holes are arranged abutting against fixed lamellae (2) across their width, the lamellae (1) being connected with the seat of the chair, the fixed lamellae (2) being captured by the retainer (7) and the bolts (5, 6), each provided with a clamping shoe (3, 4) and aligned axially.

Abstract: An armrest device for an office chair comprises a fastening element (6) intended to be fixed to the chair beside the seat (4). The-device further includes an armrest (7, 8, 9, 20) which is connected to the fastening element (6) and has a vertical column (7) so connected to the fastening element as to be rotatable about its longitudinal axis, a horizontal rear supporting bar (8) connected to the column, and a front supporting bar (9) carrying a forearm rest (20), on which the user's forearm is to rest, and being telescopically displaceable in relation to the rear supporting bar (8) in order to form an armrest that can be lengthened and shortened as desired. The rear supporting bar (8) is so mounted on the column (7) as to be pivotable about a horizontal transverse axis (10).

Abstract: Seat mounting, especially for office chairs, having a frame attachable to the lower side of the chair and provided with a pivotal holder for the back-rest and a pivotal holder for the support column of the chair. Secured between said holders and said frame are gas springs counteracting pivotal movement of said holders and, when actuated, permitting said holders to be pivoted. To actuate said gas springs an operating member is provided which is rotatable in opposite directions and also is vertically movable. Upon rotation of said operating member in one direction, one of said gas springs is released to permit pivotal movement of the associated holder. When said operating member is rotated in the opposite direction, the other gas spring is released to permit pivotal movement of the associated holder. When the operating member is raised, both gas springs are released to permit simultaneous pivotal movement of the back-rest and the seat.