Abstract: A task chair has a buttocks portion, with a size sufficient only for the bottom of a person sitting on it, and a thigh support separate from it. The thigh support is displaceable to at least partway under the buttocks portion and can be pulled forward while under the buttocks portion. As a result, the length of the seat surface can be adjusted to the body size of a person using the stool. The guide for the displacement is curved. The front edge of the buttocks portion is formed by padding that tapers in wedge-like fashion. The front part of the cushion rests on the thigh support, and the rear part is retained by a bearing shell. The buttocks portion can be designed to be pivoted together with the backrest.

Abstract: In a table (11), the tabletop (19) is divided into three parts (21, 22, 23), of which one (23) is fixedly connected to the frame (13) of the table (11), the second (22) is articulated on the first (23) by a joint (27) and the third (31) is in turn articulated on the second (22) by joint (25) and is adjustable as to height. Together with an arm (29) pivotally fixed on the frame (13) and on the height-adjustable tabletop part (21), the movable tabletop part (22, 21) and the frame (13) form a parallelogram. The angle .alpha. of the parallelogram is adjustable with a lever (31) on the middle tabletop part (22) and by a motor (33) with a spindle (35). The height of the table is thus adjustable.

Abstract: The essential feature of the new toothbrush is the relative position of the handle (1) to the head (3) and the bristle pattern (4). An angle reference plane (11) lying on the bristle side coincident with an upper surface of the brush handle intersects the bristle pattern either at the surface (15), the edge between the said surface and the side (16) facing the handle, or on the side (16) of the bristle array facing the handle. Relative to the bristle array surface (15), an acute angle (.alpha.) of from 5.degree. to 20.degree. is formed between the two planes.The new toothbrush therefore is a bristle array surface set at an angle to the handle and improved force transfer to the working surface of the bristle array.