Abstract: A load adjustment device has a throttle valve (9) which determines the output of an internal combustion engine and is connected, fixed for rotation, with a throttle-valve shaft (36) arranged in a throttle-valve housing. A control element cooperates with a driver 4 coupled to an accelerator pedal (1), and acts on the throttle-valve shaft (36). In addition to the one driver (45), two further drivers (49, 51) forming a free-travel hook (47) are provided, having at least two stops between which a driver (52) of the throttle-valve shaft (36) is adjustably received. By the use of the first driver (45) between the electric motor (14) and the throttle-valve shaft (36), the coupling provided on the driven shaft (39) of the electric motor (14) can be dispensed with in simple manner.

Abstract: In a load-shifting device, a switch arm (7) is mounted on a driven shaft (3) and is turnable relative to the driven shaft (3) and urged in the direction of a switch contact (9) by a spring (8) which is wound around the driven shaft (3). The spring (8) is developed as an electric conductor. On one leg (13) it has a connecting piece (20) while its other leg (11) directly contacts the switch contact (9).

Abstract: In the throttle butterfly (2) of a throttle-butterfly connector piece of an internal combustion engine there is provided an expansion member (5) which has two arcuate pieces (6,7) which extend out of the circumferential surface of the throttle butterfly (2). The free ends of the arcuate pieces (6, 7) rest against a setting surface (8) which is provided on the housing (1) of the throttle-butterfly connector piece. The setting surface (8) is developed in such a manner that the arcuate piece (6, 7) is spread andt he surface of the throttle buterfly (2) is increased with small angles of opening as compared with what it is in its closed condition.