Abstract: In a clamping chuck (1) for holding clamped a brush body (2), in particular a toothbrush body in its head region, including at least two clamping jaws (3a, 3b) spaced apart from one another in the longitudinal direction of the brush body (2) to be held, at least one of the clamping jaws (3b) is movable and is adjustable between an open position and a closed position which holds the brush body (2) clamped between the clamping jaws (3a, 3b). There is provided a brush body support (5) which is arranged between the clamping jaws (3a, 3b) and which is adjustable between a closed position acting on the rear side of the brush body (2) and an open position which is retracted with respect to said closed position. A common actuating mechanism (6) is provided for jointly adjusting the clamping jaw(s) (3b) and the brush body support (5) against a restoring force from the respective closed position into the open position (FIG. 5).

Abstract: A projectile fuse has two activating devices acting independent of each other. One of the devices includes a plurality of wafer-like sectors which are retained together as a unitary disk by means of a coil spring having 1.5 to 2 convolutions. The disk is arranged in a bore of the fuse housing and normally covers a vent which is concentrically positioned in the bore. Under the effect of rotationally generated centrifugal forces occurring upon firing, the sectors force open the spring and thereby expose the vent for passage of an ignition flash.