Abstract: A swivel-chair (10) has a frame (15) on which a seat (24) is movably mounted. A back (22) is connected with the seat (24), and this back (22) may be turned around a connecting point (19) at the frame (15). At this connecting point (19) a rotary spring (40) is provided, which tends to turn the back (22) into its working position, and the seat (24) is supported and guided at a seat-guide (31) at its forward area, that is where the thighs of the user are resting. This seat-guide (31) is preferably made such, that it will keep the inclination of the seat (24) on movement thereof, thus the so-called seat-slope, at an ergonomically advantageous value. A movement into the rest position goes against the rotary spring (40) and if required also the seat-guide (31) Optionally a blocking-device (45) for the seat (24) may also be provided in order to be able to block the seat (24) in any desired position in accordance with the wishes of the user.

Abstract: A table more specially in the form of desk has a desk frame (10) that has an oblique element (16) extending in an upward direction, in which there is an arrangement (44 and 59) for adjustment of the height of the top part (21) of the desk. This element (16) accommodates a sliding element (44) which at its top end bears a support member (17 and 18) for the top part (21) of the desk. The latter may be shifted in relation to the support member (17 and 18) and is connected with the desk frame (10) by an adjustment arrangement (23) so that when the top part (21) of the desk is adjusted in height the top part is kept from moving horizontally to any substantial extent in relation to the person using the desk.

Abstract: A chair comprising a box type stationary frame fixed to an upper end of a pole brace erected on leg portions, an L-shaped back rest frame whose lower portion is curved, a base frame for mounting a seat plate, an inclination adjusting mechanism for controlling an inclination of the base frame and the reclining frame to an optional angle in which the reclining frame is axially fixed to a rear portion of the stationary frame and the reclining frame is axially fixed to a rear end portion of the base frame at its curved portion, a horizontal shaft axially supported on a front portion of the base frame and inserted through an almost horizontal long hole provided in the front part of the stationary frame, a gas spring one end of which is pivotally fixed to an inside wall of the stationary frame and the other end of which is pivotally fixed to the horizontal shaft, and an operation lever for switching a push valve of the gas spring, and said operation lever being provided with a lever releasing keeping mechanism for