Abstract: A throttle device having a throttle-flap connection piece which is produced from plastic. For an efficient production of the throttle-flap connection piece form plastic in the plastic injection-molding technique, it is necessary to avoid undesirable shrinkage in the pivoting region of the throttle flap and to seal off the bearing arrangements against penetrating plastic during the injection operation. The throttle device includes an annular insertion part which is arranged in the pivoting region of the throttle flap and which, connected to the bearing arrangements is embedded into the throttle-flap connection piece made form plastic, in order to protect the bearing arrangement against penetrating plastic. The injected-round insertion part is suitable for throttle devices which are made from plastic and which are provided for mixture-compressing spark-ignition or air-compressing auto-ignition internal-combustion engines.

Abstract: A throttle-valve housing of plastic has a metal insert which achieves dimensional stability in the region of the throttle valve. The throttle-valve housing is formed of plastic with a cavity bounded by an inner wall surface. In the wall there is arranged a metal insert which is covered on all sides by the plastic material and effects a stabilization of the plastic material, so that distorting, shrinking or the like is prevented and dimensional accuracy of the inner wall surface is ensured. The novel throttle-valve housing is simple to produce and has a high dimensional stability in spite of being formed from plastic material. The throttle-valve housing is suitable for internal-combustion engines of motor vehicles.

Abstract: In a recording and/or reproducing apparatus (1) with a housing (7) and with a chassis (12) connected to a housing part (16), the chassis is connected to the housing part (16) via three connecting arrangements (13, 14, 15). Each connecting arrangement (13, 14, 15) has a supporting part (18, 19, 20) firmly connected to the housing part (16) and having a convex spherical supporting surface (21, 22, 23) facing the chassis (12), and a counterpart (24, 25, 26) connected to the chassis (12) and having a rotationally symmetrical, preferably like-wise spherical mating surface (27, 28, 29) which widens continuously towards the housing part (16).