Abstract: The invention is directed to a toothbrush having a brush head 26 moved by an electromotive drive 12. It is suggested to arrange a mechanical torque limiting device 15 including a cam follower 13, 14 which is acted upon by a spring 16, 17 between a drive shaft of the electromotive drive 12 and the brush head 26. The user of the toothbrush and the electric motor 12 of the toothbrush are thereby protected against damage resulting from an improper manipulation of the toothbrush.

Abstract: The invention relates to a jet tip on the handle of an oral hygiene appliance. The jet of the jet tip has an opening in which a slidable core piece is displaceable, which core piece exposes only the output openings for a multiple stream in one of its two extreme positions in the jet and only a single output opening for a single stream in its other extreme position. Advantageously, when the core piece moves from one extreme position to the other, contaminants or calcium deposits are automatically and mechanically removed from the outlet opening or outlet openings which is or are not exposed. The core piece can be positively mounted in the jet and be movable by pressure or tension force exerted by a spring and be thereby automatically locked into its two extreme positions.

Abstract: A dry shaver has a shearing foil clamped to a holder detachably mounted on a shaver housing over a cutter. The holder is arranged to enable the shearing foil to be moved between an operating position wherein the shearing foil is wrapped around the cutter in a wrap angle exceeding 180.degree. and a second position wherein the wrap angle is less than 180.degree. to facilitate removal of the holder and shearing foil from the shaver housing.