Abstract: In a toothbrush (1) comprising a stationary part (10) and a brush holder (24) which is movable with respect to the stationary part (10), and comprising a spring (48) which acts between the stationary part (10) and the brush holder (24), a link-motion device (49) is arranged between the stationary part (10) and the brush holder (24), in addition to the spring (48), in order to obtain a desired force characteristic, which link-motion device (49) is loaded by the spring (48) and comprises a link-motion follower (51) and a link-motion surface (50) having two link-motion surface portions (52, 53), the two link-motion surface portions (52, 53) adjoining one another by an edge-like transition portion (54).

Abstract: In a dental cleaning device (1) including a grip member (2) and at least one elongate extension member (5) which projects from the grip member (2) in the direction of a longitudinal axis (4), the free end portion (13) of the extension member carrying a brush holder (14), from which bristles (10) project in the direction of the pivotal axis (15) and which is drivable so as to pivot to and fro along a circularly arcuate path about a pivotal axis (15) oriented transversely to the longitudinal axis (4), and an interdental brush holder (16), from which interdental bristles (12) extend also in the direction of dte pivotal axis (15) and which is coupled to a drive member (69) which is drivable so as to pivot to and fro about a further pivotal axis (17), the further pivotal axis (17) also extends transversely to the longitudal axis (4) of the extension member (5), and the free ends of the bristles (10) and the interdental bristles (12) perform a movement whose main component is oriented parallel to a plane which exte

Abstract: In a dry shaving apparatus comprising a shaving head frame (5) detachably fixed to the basic apparatus (1) by at least one resilient latch element (2, 3) and carrying an apertured shear foil (4) and a slidable shutter (6), which serves to optionally cover or expose the apertured shear foil and which, when it is displaced in the direction away from the apertured shear foil, is displaceable into a switching-on position and subsequently into a further position, in which the motor current circuit is interrupted, it is ensured that the latch element cooperating with the shaving head frame is connected to a slide (17, 18), which is displaceable parallel to the direction of displacement of the shutter and cooperates with a spring (22, 23), which attempts to pass the slide and the latch element to the latched position holding the shaving head frame and the shutter, when it is displaced from the switching-on position to the further position, can be positively coupled after the interruption of the motor current circuit

Abstract: In a dry-shaving apparatus comprising at least one shutter (4) which is slidable on the apparatus housing (3) for optionally covering or exposing a shear foil, the shutter-wall surface (14) which faces the apparatus housing is spaced from the apparatus housing, at least one sliding guide means (15;16) acting between the shutter and the apparatus housing to provide localized areas of contact between the shutter and the apparatus housing in the sliding direction of the shutter.

Abstract: In a shutter (3) for a dry-shaving apparatus, which shutter serves for optinally covering or exposing a shear foil of said apparatus and which comprises an elastic carrier (11) and spaced-apart slats (10), the inherently stiff slats, viewed in the longitudinal direction of the shutter, are successively enveloped at least partly by the elastic carrier (FIG. 1 and FIG. 5). Two-step injection moulding processes are proposed for manufacturing such a shutter.

Abstract: A dry-shaving apparatus is provided comprising a shaving-head frame (2), which can be placed on a basic apparatus (1), which carries a shear foil (7), and which is detachably secured to the basic apparatus by means of at least one resilient latch (12), and at least one slidable shutter (3) for optionally covering or exposing the shear foil wherein the shutter is movable from a position on the basic apparatus in which it exposes the shaving-head frame and the shear foil to a position on the shaving-head frame, and wherein movement of the latch to detach the shaving-head frame from the basic apparatus is blocked by the shutter when the shutter has been moved at least partly out of the position in which it exposes the shaving-head frame and the shear foil.

Abstract: In a dry-shaving apparatus comprising a slidable shutter (3) for optionally covering or exposing a shear foil of the dry-shaving apparatus an arm (15) of a slide (14) for actuating a switch (11) in the motor circuit extends in the path of the shutter end which is remote from the shear foil when the shutter is moved away from the shear foil to expose the shear foil for the purpose of shaving, the free end of said arm being elastically deflectable transversely of the direction of movement of the shutter to interlock with the shutter end, so that upon a further movement of the shutter away from the shear foil the slide is moved via the arm and the switch is actuated.