Abstract: A tractor-trailer (10) comprises a tractor (12) and a trailer (14), a trailer coupling (12b) and a supply coupling (16/18) between the two component vehicles (12, 14) with a tractor-side coupling half (16) and a trailer-side coupling half (18), which can be coupled together by bringing them together along a predefined coupling axis (K). One of the coupling halves (16) is connected to the supply unit of the associated first component vehicle (12) through a flexible supply line (16d). To establish the coupled state between the two coupling halves (16, 18), an actuator (20) is arranged on the first component vehicle (12) that moves the first coupling half (16) toward the second coupling half (18) and joins the one to the other along the predefined coupling axis (K). The first coupling half (16) is arranged on the actuator (20) such that it can be oriented in all spatial directions at least within predetermined limits.

Abstract: In an acceleration switch, such as used for actuating an impact detonator in a projectile, a ball is held between a support surface and a lever member which forms a part of a toggle lever assembly. On impact, the ball causes the lever to pivot and displace another lever member to which it is pivotally connected. When displaced, the toggle lever assembly passes through a dead center position and a portion of its another lever is moved out of the path of a light source and light detector for closing the ignition circuit of the impact detonator. A releasable safety device is provided to prevent premature movement of the lever assembly which would close the ignition circuit.